On the Rare Plant Technical Council List
Acrocarpic moss to 3 mm tall and 2 mm wide, the stems not or sparingly branched; central strand absent; leaves distichous, equitant, consisting of 2 laminae that clasp the stem, arranged on edge to the stem and split at the base, to 1.5 mm long and 0...
Erect, herbaceous perennial, 40-100 cm tall, glandular and eglandular hairs throughout; basal leaves in a more or less persistent rosette, palmately 5-parted, blade 3.7-4.4 cm long, 4.8-5.6 cm wide; stem leaves opposite, stipulate, 3-5-parted, the se...
Annual or biennial; stems 1-4 from an herbaceous base, loosely corymbosely branched, mostly suffused with reddish-purple, 2-7 dm tall; leaves rather thin, dull green, denticulate to coarsely dentate, ovoid-oblong to lanceolate, usually subamplexicaul...
Biennial herb; stems one or a few, 2-6 dm tall, covered with appressed and somewhat spreading hairs; leaves hairy, those at base of plant oblanceolate, withering early, 2-7 cm long, stem leaves lanceolate or oblong 3-10 cm long; inflorescence a coile...
An herbaceous perennial forming dense tufts from woody rootstocks; leaves opposite, coriaceous, sessile, lanceolate-elliptic, entire, tapered to a conspicuous apiculate apex, 7-15 mm long, 1.5-3.5 mm wide; flowers solitary or in clusters of 2-3 in up...
Perennial herbs; stems (15)20-30(40) cm tall, few to numerous, ascending or very shortly decumbent, woody below, herbaceous above, branching frequently in lower half, villous below, sparsely to densely puberulent above with tightly retrorse hairs; le...
Rhizomatous, perennial herb, the rhizomes slender and unbranched; stems several, unbranched, clustered, somewhat woody at the base, 10-20 cm tall; leaves opposite, 8-15 mm long, 2.5-5.0 mm wide, sessile, oblong-lanceolate, tip rounded to acute, margi...
Herbaceous perennial with long creeping roots that function like rhizones; stems glabrous, glaucous, 20-30 cm tall; leaves opposite, sessile, lanceolate, 6-7 cm long, 1.0-1.3 cm wide, tip acute, margins undulate, surface glabrous and glaucous, bluish...
Annual, 1-2 m tall, branched above, stem glabrous to hispid; leaves opposite below, alternate above, up to 17.5 cm long by 8.5 cm wide, lanceolate with 3 prominent veins, base tapering to a short petiole, margins entire except for a few prominent tee...
Annual (?); stem slender, unbranched, about 0.9 m tall, sparingly coarse-strigose; leaves opposite to mid-stem, alternate above, narrowly linear-lanceolate, about 6 cm long, 6 mm wide, acute, entire, narrowly attenuate to a sessile base, thinly appre...