Whitebark pine is a long-lived conifer tree, typically 5-20 m tall with trunks up to 1.5 m in diameter, and a rounded or irregularly spreading crown. The mature bark is smooth, fissured into scales, and white to gray in color. The mature crown is often deformed due to wind and snowpack exposure. Buds are ovoid, …
Willamette navarretia is an annual plant that reaches 3-16 cm tall and wide with the primary head at the tip of the main stem and generally with 1-20 smaller heads at the tips of ascending lateral branches. The stems and branches are puberulent and green to reddish brown. The lower leaves are opposite or alternate …
White fairy poppy is a diminutive annual forb that is 2-16 cm tall with erect to ascending stems. The whorled basal leaves are 3-18 mm long, with a blade that’s linear-spatulate (appearing to have an ~10 mm petiole) and entire margins, while stem leaves are opposite and sessile. The flower receptacle is shorter than broad …
Water howellia is a delicate, glabrous aquatic annual with a flaccid, somewhat fistulose stem. Plants are 10-70 cm long, rooted, naked below, and branched above, the branches spreading or floating. Leaves are narrowly linear, mostly entire or with a few slender teeth, flaccid, and 1-4.5 cm long by up to 1.5 mm wide. Early flowers …
Thin-leaved pea is a perennial forb that is sparsely hairy to practically glabrous. The stems are strongly angled or narrowly winged and 30-100 cm long and have a climbing habit. The leaves are 6-10 cm long, alternate, compound and stipulate. The stipules are large and ovate to ovate-lanceolate with the margins coarsely undulate and the …
Tall western penstemon is perennial forb typical of the genus in that it has opposite leaves, flower clusters born in axils of upper bracts, and tubular flowers (of five fused petals) with four fertile, pollenproducing anthers and a fifth sterile anther modified into a staminode. Stems and axes of the inflorescence are glabrous to pubescent, …
Stansell’s daisy is a perennial plant that grows 7-25 cm tall and is tap-rooted with few-branched caudices. The stems of E. stanselliae are erect to decumbent, glabrous to sparsely strigose, and sometimes minutely glandular. The species has basal leaves that are linear to oblanceolate, 40-120 mm long and 2-5 mm wide, that are gradually or …
Seaside gilia is a densely glandular, annual forb with a faint skunk-like odor. The stems are 8-30 cm, with a short main stem and long-decumbent branches. The 1-2 pinnate-lobed leaves (lobes 2-5 mm) are somewhat fleshy and arranged in a basal rosette; upper leaves are shorter and palmate. Inflorescences are in clusters with 2-6 flowers …
Rough goldenweed is a stout tap-rooted perennial with erect stems, 30-70 cm tall, usually glabrous but sometimes slightly roughened distally. Oblanceolate to narrowly elliptic basal leaves are 7-20 cm long and 6-19 mm wide, with entire margins and variable surface texture from glabrous to with sparse shaggy hairs. Cauline leaves are sessile or petiolate and …
Ochoco lomatium is acaulescent with globose tuberous roots with an irregularly thickened or elongated and slender upper 2-4 cm portion. Caudices are simple or 2-3 branched with basal leaf sheaths from previous years absent or weathering into a thatch of a few loose fibers or chartaceous scales at the base of the pseudoscape. The stems …
Narrow-leaved monardella is a fragrant, 15-30 cm tall subshrub with a woody base. The lorate to very narrowly elliptic leaves are often fascicled (bundled), spreading to reflexed, 10-13 mm long by 1.9-2.5 mm wide, and commonly conduplicate. The pale to grayish green leaves are punctate glandular, puberulent above and below, and sometimes glabrous or nearly …
Mendocino coast paintbrush is a tap rooted perennial herb with few to many, decumbent to ascending branching stems arising 17-65 cm from a woody caudex. Generally covered with shaggy-bristly, nonglandular hairs that give the plant a gray-green hue. The somewhat fleshy leaves are 5-20 mm long, oblong to rounded, cupped, with 0-3 truncate-rounded lobes. Inflorescences …
Lemmon’s milkvetch is a perennial plant with numerous, widely branched and sparsely strigose prostrate stems that are loosely matted and 10-50 cm long. The leaves are 1-4.5 cm with 7-15 leaflets that are narrowly elliptic to oblanceolate, 2-11 by 1-2 mm, with obtuse to sub-acute tips. The leaf surface is abaxially strigillose and adaxially glabrate …
Large-flowered woolly meadowfoam is a low growing annual herb 5-15 cm long. Stems and leaves are sparsely pubescent. Leaves are 1-6 cm long with linear to oblanceolate leaflets 4-8 mm long. Sepals are pubescent without at the base and densely wooly pubescent within, from 8-14 mm long. Petals are white and range from 7-10 mm …
Large-flowered goldfields is a perennial herb, often rhizomatous and clump-forming, from 2.5-30 cm tall, frequently with a dwarfed and compact growth form on windswept bluffs. The decumbent, somewhat hairy stems branch near the base and the linear to oblong leaves are 5-40 mm long, 1-5 mm wide, with entire margins and glabrous or somewhat hairy …
Hitchcock’s blue-eyed grass is a rhizomatous perennial herb with 1-3 erect to ascending, mostly unbranched stems. Leaves are shorter than the stems, lax to ascending or strict, and 3-4 mm wide with smooth to finely denticulate margins. Inflorescences are terminal on the stem or pedunculate, with outer bracts longer than inner bracts. There are 2-7 …
Columbia yellowcress is an herbaceous perennial, arising from slender roots or rhizomes and covered in fine pubescence or papillose. The stems are somewhat erect, decumbent, or prostrate, from 1-40 cm long and branching repeatedly. Leaves oblanceolate to oblong with sinuate to pinnatifid entire to dentate margins, sometimes with irregular laciniate lobes. Lower leaves often petioled, …
Bentonite biscuitroot, also known as bentonite lomatium, is a perennial species, acaulescent or very short-stemmed, with round thickened tubers (about 1-4 cm diameter) that abruptly taper to an elongated ( <10 cm long) slender upper portion. This diminutive plant can have an unbranched or 2-7 branched caudex, with fibrous remains of previous years’ leaf sheaths, …
Barren valley collomia is a small annual species measuring only two to six inches tall and branching when developed. The species is glandular and puberulent throughout, and densely so on the peduncles and calyx teeth. Ciliate on petioles and along lower edges of leaf blades and bracts. There are few leaves on C. renacta, and …
Pumice grape-fern is a perennial with a stout, fleshy underground stalk about 10 cm long, usually bearing a single leaf divided into sterile and fertile parts. The sterile portion of the leaf (trophophore) is dull, grayish green, glaucous, sessile or nearly so, the blade up to 4 cm long by 6 cm wide, usually ternately …
Western lily is a perennial that grows from a rhizomatous bulb, with a slender, unbranched stem 60-170 cm tall. The dark green leaves are narrowly oblanceolate, 622 cm long by 0.5-2.5 cm wide, and mostly scattered, with usually only the central leaves whorled. The showy, nodding flowers number 1-10 (25) on very long pedicels, the …
McDonald’s rockcress is a mat-forming perennial species usually with several simple stems 5-30 cm high growing from a branched caudex. Basal leaves are arranged in rosettes, are spatulate with an essentially glabrous surface, usually 1-2 cm (-3) long and 0.3-0.7 cm wide, with slightly to strongly repand or toothed margins, teeth sometimes bristle-tipped. Cauline leaves …
White rock larkspur is a slender perennial species 20-60 cm tall that grows from a cluster of tubers. Leaves are numerous and evenly distributed on the stem, with long petioles and lobed blades. The inflorescence is a narrow raceme bearing 6-30 nonglandular flowers. The sepals are white to cream, sometimes slightly greenish blue on the …
Red-fruited lomatium is a perennial species, acaulescent or very short-stemmed, and glabrous throughout. This is a diminutive plant, growing to only 2-7 cm tall, including the flowering stalk. Stems, petioles, and peduncles are often purplish. There are usually 1-3 olive-green glaucous leaves that are highly divided, the rachis broadly winged, the blade 1.0-3.5 cm long …
White-topped aster is a perennial herb from slender creeping rhizomes, with generally unbranched stems topped by terminal clusters of flowering heads. Flowering stems are 10-30 cm tall, non-flowering stems about half as tall. Plants are glabrous except for scabrous-ciliolate leaf margins. Leaves are alternate and evenly distributed along the stem, oblanceolate, tapering to an essentially …
Rough popcornflower is an herbaceous plant that can grow to be 50-60 cm tall and perennial, or considerably smaller and annual, depending on environmental conditions. The upper stems are distinctly covered with spreading hairs, and the opposite cauline leaves are linear with hairy margins. Flowering stems are spreading, with paired coiled inflorescences containing many 6-10 …
Willamette daisy is a tap-rooted perennial species growing from a crown or slightly branched caudex. Stems are decumbent, moderately strigose, 15-70 cm tall, and often purplish at the base. The leaves are numerous, sparsely to moderately strigose, linear or linear-lanceolate, the basal leaves and most of the cauline leaves triple-nerved. Basal leaves are up to …
Point Reyes bird’s-beak is a halophytic annual 10-20 (-30) cm tall, simple or sparingly branched with ascending lateral branches equal to or shorter than the central spike. The herbage is grayish green to glaucous, often purplish tinged, and villous to glabrescent. Leaves are oblong to oblong-lanceolate, 1-2.5 cm long and 0.3-0.7 cm wide, with a …
Wolf’s evening primrose is an erect, branching biennial to short-lived perennial, 5-15 dm tall, with greenish or red stems covered with stiff hairs. Plants form a basal rosette with elliptical leaves in the first year, and typically bolt and flower the following year. Flowers are pale yellow to yellow and are usually less than 4 …
Sexton Mountain mariposa lily is a bulbous perennial with a stout stem and a single basal leaf 2-2.5 dm long. The 2-2.5 cm bulb is ovoid, with a thick, dark coat. Flowers are bright lavender, with hairs in only a small area at the base of the petals above the gland. The two to four …
Bull kelp is a brown alga that can grow to about 115 feet long. A tough root-like structure called a holdfast anchors it to the rocky bottom of the nearshore. The long, hollow stem-like stipe grows from the bottom up towards the surface buoyed by a single large air bladder bulb from which the leaf-like …
Shiny-fruited allocarya is a slender, erect annual with a simple, strigose stem 10-30 cm tall. The leaves are linear, 1-2 cm long, glabrous above and hispid below. Flowers are borne on very short pedicels and arranged in one-sided racemes bracted only towards the base. The fruiting calyx is somewhat thickened at the base, with narrowly …
Native eelgrass is a flowering plant found in estuaries and protected waters in Oregon. It has blades up to about 0.5 inch wide and can grow to lengths of just over 3 feet long. It grows in sandy and muddy substrates within a narrow depth range where it can get adequate light, but is rarely …
Silvery phacelia is a perennial arising from an often much branched and elongated caudex. Stems are stout, decumbent to ascending, and 10-45 cm long, the stems and petioles white hispid to hispidulous with fine, upward-appressed hairs. Leaves are thick, entire or with a pair of leaflets below the main blade, 5-12 cm long by 2-3 …
Sea palm is a brown alga that only lives in the middle and upper intertidal zones on wave-exposed rocky shores. It has a tough stem-like hollow stipe that reaches about 50-75 cm tall that keeps it upright even when it is exposed to the air when the tide is low. It is topped with leaf-like …
Smooth mentzelia is a low annual, 5-12 cm tall. The dark stem is stout, erect, branching, and puberulent but not scabrous, at least when young, the hairs barbed at the tips. The leaves are crowded below, oblong-lanceolate or oblanceolate, obtuse, sessile or subsessile, and less puberulent than the stem. Leaf margins are entire, slightly wavy, …
Several species of surfgrass are found in Oregon nearshore waters that are considered to be part of the essential fish habitat for groundfish. Surfgrass are flowering plants. The live in rocky areas with turbulent waters in a narrow depth range from the intertidal to the shallow subtidal. The plants vary in appearance and habitat. Some …
Northern wormwood is a low-growing (to 30 cm), tap-rooted biennial or perennial. The basal leaves are 2.5–10 cm long, 2-3 times divided into mostly linear divisions, and crowded into rosettes. Leaves and stems are covered with fine, silky hairs. The inflorescence is narrow, with relatively large flower heads. The outer flowers are pistillate and fertile, …
Snake River goldenweed is a perennial species with one to several stems 30-100 cm tall arising from a woody taproot. The plant is essentially glabrous throughout. Basal leaves are tufted, broadly elliptic, usually 15-50 cm long (including the petiole) and 520 cm wide. The numerous cauline leaves are sharply toothed and reduced, becoming sessile above, …
Oregon semaphore grass is a perennial arising from slender rhizomes with purplish red scales and long soft internodes. The culms are erect, soft and spongy, and 55-90 cm tall. Sheaths are overlapping and closed for 3/4 their length, the lower sheaths loose, purplish red, and nearly smooth, the upper ones scaberulous and striate. Ligules are …
South Fork John Day milkvetch is a tap-rooted annual, or possibly short-lived perennial, with several cespitose, spreading, strigose stems 10-40 cm long. Leaves are 3-5 cm long with slender petioles. Leaflets number 9-15, are oblong to obovate, glabrous above and strigose beneath, and 0.5-1.0 cm long. Racemes are short, fewflowered, and are borne on peduncles …
Owyhee clover is a glaucous perennial with one to several spreading stems up to 20 cm long growing from a thick woody taproot, often with numerous rhizomes. Leaves are few on petioles up to 2.5 times the length of the leaflets. Leaflets are thick and broad, green with white crescents, more or less emarginate, and …
Spalding’s campion is a perennial with one to many shoots growing from a branched, woody caudex. It is viscid-tomentose throughout, with erect leafy stems, simple or strictly branched, 20-60 cm tall. The nodes are large, with 2 sessile, proximally connate leaves per node. Leaf blades are ovate to lanceolate with an acute apex, 3-7 cm …
Packard’s mentzelia is an erect, sparsely branched annual 10-40 cm tall, with white to pale green stout stems. The basal leaves are linear and entire or with shallow narrow lobes; the upper leaves are linear to ovate-lanceolate, entire, sessile, occasionally somewhat clasping, and densely pubescent. Flowers are either solitary in the stem axils or arranged …
Sterile milkvetch is a perennial species 7-15 cm tall, with stiff, wiry stems arising singly or two or three together from creeping rhizomes. Stems are short-strigose and branched, the branches often incurved. Leaves are 2-9 cm long, the rachis elongated well beyond the leaflets. Leaflets are arranged in scattered pairs of 3-5, are linear to …
Peacock larkspur is a leafy perennial 30-90 cm tall that grows from a cluster of globose tubers. The deeply cleft leaves are mostly cauline, becoming bract-like above, the lowest leaves with petioles up to 22 cm long. Flowers are arranged in a pyramidal raceme, with lower pedicels much longer than the upper ones. The sepals …
Tygh Valley milkvetch is a densely villous-tomentose perennial arising from a thick, woody taproot and shortly forking caudex. Stems are several to numerous, usually 1555 cm long, and prostrate to weakly ascending, forming loose mats or tufted clumps. Leaves are pinnately compound, 5-14 cm long, the uppermost subsessile, with (7) 1525 flat leaflets 0.6-1.7 cm …
Peck’s milkvetch is a prostrate perennial with a deep taproot. The reddish stems reach 1-3 dm long, and leaves are pinnately compound with 8-14 leaflets per leaf. Leaf petioles persist from year to year, giving plants a skeletal look during winter dormancy. (Interestingly, Peck’s milkvetch is the only North American milkvetch to have persistent petioles.) …
Umpqua mariposa lily is a bulbous perennial, 2-3 dm tall with a basal leaf averaging 32 cm in length. Like the closely related C. howellii, C. umpquaensis has hairs in parallel rows along the veins on the underside of the leaf. The one to several broadly cup-shaped flowers are 5.3-10.5 cm in diameter, hairy, and …
Pink sandverbena can be either an annual or occasionally a short-lived perennial. It is a tap-rooted glandular-puberulent forb with few to several prostrate branches up to 1 m (-1.5) long. Leaf blades are fleshy, light green, oval to oblong-ovate with somewhat irregular margins, 2-6 cm long, with slender petioles about as long as the blades. …
Wayside aster is an erect perennial mostly 60-120 cm tall, growing from a stout caudex. The lowermost leaves are reduced and scale-like; those above are elliptic or broadly lanceolate, sessile, entire or with a few irregular teeth, 5-9 cm long by 1.5-3 cm wide and gradually reduced toward the inflorescence. Leaves are glabrous to glandular …
Cascade Head catchfly is a taprooted, tufted perennial arising from a branched, subterranean caudex, with numerous decumbent, simple stems (5-) 10-40 (-50) cm tall, the plants finely and densely pubescent. Leaves are fleshy, mostly matted at the base of stems and on new shoots, generally oblanceolate, acute, and 2-5 (-8) cm long by 3-13 mm …
Howell’s spectacular thelypody is an herbacious biennial that grows 3-7 dm tall. During the first growing season, this species typically forms a rosette, with wavy-margined leaves growing 2-5 cm in length. As with many biennials, Howell’s spectacular thelypody usually reproduces in its second year. The flowering stalk’s auriculate cauline leaves have smooth edges and are …
Cook’s desert parsley is a small, perennial plant that is rarely taller than 30 cm. Unless it is in flower, it is generally quite inconspicuous. The plant has a simple to branched taproot and thin, oblong leaves that are ternately divided into many narrow leaflets. Flowers are generally pale yellow in color and are produced …
Kincaid’s lupine is a perennial arising from a branched crown, usually with numerous unbranched stems (30) 40-80 (100) cm tall, with whitish or brownish stiff to silky pubescence. Basal leaves are usually persistent until after flowering, with petioles (2) 3-5 times the length of the blades; upper cauline leaves have petioles sometimes shorter than the …
Coast Range fawn lily is a perennial arising from a corm 2-5.5 cm long by 0.8-1.5 cm wide, which produces new cormlets laterally. Leaves are uniformly deep green or faintly mottled with brown or white. Non-flowering plants bear a single leaf, 6-8 cm long by 45 cm wide, the broad ovate-lanceolate blade usually abruptly narrowed …
Large-flowered rush lily is a bulbous perennial with a solitary flowering stalk up to a meter in height. The bluish-green leaves are mostly basal, grass-like, 25-55 cm long, and glabrous, with only a few small cauline leaves. Dead and shriveled leaves are often present at the base of the flowering stalk. Flowers are arranged in …
Crinite mariposa lily is a bulbous perennial with a single, more or less erect basal leaf up to 30 cm long and 0.3-0.7 cm wide. The outer surface of the leaf is dark green, shiny, and glabrous, the inner surface densely hairy with rows of blunt-ended hairs on raised veins. The flowering stem is erect …
Lawrence’s milkvetch is a taprooted perennial 20-40 cm high. Stems are clustered, erect or decumbent at the base, and canescent with short crisped pubescence. Leaves are 3-5 cm long, with short petioles. Leaflets number 11-17, are linear to cuneate with obtuse or emarginate apices, 0.6-1.0 cm long, and woolly pubescent. Many-flowered racemes are borne on …
Cronquist’s stickseed is an erect, taprooted perennial 20-65 cm tall. Stems are glabrous below the middle and sparsely antrorse-strigose above, arising from a compactly branched caudex. Leaves are hirsute or strigose, the basal leaves usually persistent, narrowly elliptic or lance-elliptic, 6-14 (-21) cm long by 0.5-2 (-3.5) cm wide, with long petioles. Cauline leaves are …
Macfarlane’s four o’clock is a stout perennial that forms hemispheric clumps 0.6-1.2 m in diameter, with several freely branched decumbent or ascending stems that are glabrous to sparsely puberulent. The leaves are opposite and fleshy, the lower blades orbicular to ovate-deltoid, the upper narrowly ovate. The petioles of lower leaves are 12.5 cm long; upper …
Crosby’s buckwheat is a low, matted perennial 0.5-15 (-20) cm tall by (1-) 10-30 cm in diameter, growing from a woody caudex with matted stems. Stems bear persistent leaf bases and reach up to 1/5 the height of the plant. Leaves are basal and arranged in tight terminal clusters, the petiole 0.2-3 (-3.5) cm long …
Malheur Valley fiddleneck is an erect annual, 10-50 cm tall, glabrous to mostly glaucous below and sparsely bristly above. Leaves are ovate to broadly lanceolate and acute at the tip, with pustuliferous-based hairs on both lower and upper leaf surfaces. Plants produce from one to several flowering stalks which may be branched above. The inflorescence …
Cusick’s lupine is an erect, caespitose perennial 2-11 cm tall. Stems are sparingly branched at the base, with upper stem internodes 1-3 cm long. Upper stem nodes often bear a lateral branch terminating in an inflorescence. Leaves are mainly basal, the petioles 2-6 cm long, the 5-9 oblanceolate leaflets abundantly hairy on both surfaces, 0.7-1.9 …
Malheur wire-lettuce is an annual species, with seeds that germinate in the early spring (usually starting around the first week of April) and subsequently form glabrous-leaved basal rosettes up to 15 cm in diameter. The rosette typically bolts in late May-June, forming a wiry network of flowering branches generally less than 30 cm long. Flower …
Davis’ peppergrass is a deep-rooted perennial that forms low (4-8 cm tall) clumps. Individual plants produce many, mostly unbranched, stems with a pubescence of simple hairs. The sessile, simple leaves are green, but often appear grayish due to a dusting of the white clay in which they grow. Several dozen or more white, four-petaled flowers …
Mulford’s milkvetch is a perennial species with a long taproot and clustered, slender, wiry, thinly strigose stems, 3–20 cm long, arising from a woody, many-branched caudex. Leaves are 4–10 cm long including the petiole, with a flattened rachis and 1123 linear to elliptic leaflets, 0.3–0.8 cm long and nearly glabrous. Flowers are scattered, 5–20, in …
Dwarf meadowfoam is an annual herb with herbage glabrous throughout. Stems are simple or sparingly branched near the base, ranging from 5-10 cm high. Leaves are 1-5 cm long and are pinnately divided with linear to oblanceolate leaflets 38 mm long. Peduncles are stout, glabrous, and 2-4 cm long. Sepals are broadly lanceolate, acute, 6-10 …
Nelson’s checkermallow is an erect perennial arising from a stout taproot, the stems 40-100 cm tall and glabrous or with short, simple hairs. Leaf blades are glabrous above and sparsely covered with small, stiff hairs beneath. Basal leaves are round and palmately lobed, the lobes toothed; upper leaves are increasingly deeply cleft. The species is …
Gentner’s fritillary is a perennial herb arising from a fleshy bulb, with one to twelve deep red to maroon bell-shaped flowers produced on a single, erect, 40 to 70 centimeter tall flowering stalk. The leaves of reproductive plants occur in whorls along the stalk, while vegetative plants produce a single basal leaf varying in length …
Golden buckwheat is a low, matted perennial 2-10 cm tall by 5-20 cm in diameter, growing from a woody caudex with matted stems. Stems bear persistent leaf bases and reach up to 1/5 the height of the plant. Leaves are basal and arranged in tight terminal clusters, the petiole 0.2-0.5 (-0.8) cm long and tomentose, …
Golden paintbrush is a perennial with many stems growing from a short branching base. Stems are usually simple, erect, or slightly decumbent at the base, 10-50 cm tall, and softly viscid-villous. Leaves are viscid-villous to hispidulous, 2-4 cm long, closely ascending, the lower leaves linear-lanceolate and entire, the upper leaves oblong-ovate or -obovate with 1-4 …
Applegate’s milkvetch is a perennial species with clustered, slender, spreading or procumbent stems 25–40 (-90) cm long. Stems are simple or with few branches and are glabrous or minutely strigose above. Leaves are ascending, 3.5–8 cm long, with a very slender petiole and rachis. Leaflets number 7-13 per leaf, are linear or linear-oblong, 0.8–2 cm …
Greenman’s desert parsley is a dwarf perennial, 3-10 cm tall, with slender stems generally bearing a single more or less reduced leaf. Plants become etiolated and considerably taller when occurring in shaded sites. Leaves are chiefly basal, slightly leathery, glabrous, and pinnately or bipinnately divided with lanceolate–ovate leaflets 3-15 mm long by up to 2.5 …
Arrow-leaf thelypody is a biennial or short-lived perennial arising from a spreading rootstock. Plants are glabrous (except for leaf petioles) glaucous, and often purplish. Stems are 2-10 dm tall, branched distally, and either simple or branched near the base. Basal leaf petioles are (0.9-) 1.4-3 (-4.5) cm long and ciliate, the blades (2.8-) 3.5-8.8 (-11) …
Grimy ivesia is a long-lived perennial with a low, spreading growth form, 5-15 cm long. Most leaves are basal and compound with 5-15 pairs of overlapping leaflets which are further divided into 3 to 5 segments each. Leaves are densely hairy but not glandular. Inflorescences are erect before flowering but then become prostrate. Flowers are …
Boggs Lake hedge hyssop is a semi-aquatic annual with erect, striate stems 2-10 cm high, stout, tubular, and glabrous below, slender above, and glandular-pubescent in the inflorescence. Leaves are opposite, each pair arranged on the stem at right angles to the pair above and below, the lowermost linear-lanceolate and 1-2 cm long, the upper reduced, …
Howell’s mariposa lily is a bulbous perennial, 2-4 dm tall, that bears a single large basal leaf (averaging 30 cm in length). These deep green, somewhat leathery basal leaves are distinctly parallel-veined with rows of hairs on the undersides that correspond to the veins. The broadly cup-shaped, showy flowers have three white to cream-colored petals …
Bradshaw’s desert parsley is a low, more or less erect perennial species that grows from a long slender taproot. It is nearly acaulescent and glabrous or slightly puberulent, with leaves 10-15 cm long on petioles as long to much longer. Leaves are ternate then pinnately dissected, the ultimate segments linear and 0.6-1.2 cm long. The …
Howell’s microseris is a taprooted perennial 10-50 cm tall, usually with a single, slender, erect stem branched proximally and often distally. Leaves are chiefly basal; linear to narrowly lanceolate or oblanceolate; 10-30 cm long; the margins entire, dentate, or pinnately lobed, the lobes slender and often curved downward or backward. Involucres are narrowly ovoid in …