On the Rare Plant Technical Council List
Herbaceous perennial, 4-11 dm tall, with 1-several stems; leaves glabrous, opposite or whorled, broadly lanceolate to ovate, coarsely serrate, thin, 6-8 cm long; inflorescence a loose, few-branched, terminal panicle, somewhat glandular pubescent; flo...
Perennial herb; stem up to 7 dm tall, leafy throughout, but the leaves progressively reduced upwards; leaves bright green, thin, lanceolate to narrowly triangular, up to 14 cm long and 5 cm wide, those at the base with petioles up to 7 cm long, the s...
Hemispherical subshrubs, 20-40 cm high, with many straight, generally unbranched, stems from a woody base; unevenly woolly-tomentose on stems and leaves, older growth sometimes becoming glabrous; leaves alternate, linear or filiform, 2-7 cm long and ...
Low perennial, from multicipital caudex; stems ascending, 10-15 cm high, finely retrorsely grayish puberulent, becoming glandular in the inflorescence; basal and lowest stem leaves usually withered at anthesis; stem leaves 5-8 pairs, linear, acuminat...
Perennial; stems several from woody crown, 2-5 dm tall, usually freely branching, puberulent and glandular, at least in inflorescence; basal leaves puberulent, oblanceolate, (5)10-18 cm long, 1-2 cm wide, attenuate to long petioles; cauline leaves 1-...
Perennial; stems several from woody, thickened crown and short rootstock, 1-3 dm tall, simple or branched, more or less decumbent at base, densely pubescent and glandular throughout; leaves (2)3-6 cm long, 4-14 mm wide; stem leaves very numerous, the...
Perennial herb; stems ascending-erect, (4-) 8-12 dm tall, moderately puberulent and branching on the upper half; leaves densely arranged on the stems, thick textured, elliptic-lanceolate to elliptic-oblanceolate, 4-7 cm long, 12-20 mm wide, smaller i...
Sub-rhizomatous clumped perennial herb; stem 3-7 dm long, ascending to erect; upper stems sparsely to densely hirsute, eglandular; leaves alternate, lanceolate, 3-6 cm long, 4-7 mm wide, narrowly lanceolate to linear-lanceolate on the upper plant; in...
Glabrous annual herb 10-20 cm high with a single stem branching distally or from near the base; leaves basal and cauline, alternate, twice- or thrice-ternately compound, ultimate divisions filiform, broadly ovate in outline, basal leaves usually with...
Stout perennial herb; stems woody at the base, to 3 m tall with multiple ascending branches; leaves 1-5 cm long, rugose, with stellate hairs, 3-lobed, the lateral lobes shorter than the central lobe, and irregularly dentate; flowers numerous in elong...