Asclepias rara N.E.Br.

Stem solitary, erect, 6-8 in. high, simple, rather densely and softly villous, at least above; leaves in 5-10 pairs; petiole 1/2-3 lin. long; blade 3/4-2 in. long, 1/4-1 in. broad, lowest usually ovate and obtuse, upper linear-lanceolate, narrowly oblong-lanceolate or elongate-ovate, acute, cordate or subcordate at the base, thinly pilose or subvillous on both sides or on the midrib only, ciliate; umbels usually 3-4, lateral at the nodes and terminal, racemosely arranged, or sometimes 1 and lateral, with the stem prolonged beyond it, about 7-flowered; peduncles 1/2-1 3/4 in. long, villous; pedicels 1/3-3/4 in. long, villous; sepals 1-1 1/2 lin. long, 1/2-2/3 lin. broad, ovate-lanceolate, acute or acuminate, villous; corolla-lobes reflexed-spreading, 2 1/2-2 3/4 lin. long, 1 1/2-2 lin. broad, ovate or elliptic-ovate, acute, thinly pilose on the back, glabrous on the inner face, brown or greenish-brown in dried flowers; corona-lobes arising 1/4-1/3 lin. up the staminal column, compressed cucullate, 3/4-1 lin. long, somewhat D-shaped and 1/2-1 lin. broad in side view, the obliquely truncate top gradually rounded into the back or scarcely angular at the dorsal apex, inner top angles produced over the style-apex into rather long and very acute teeth, no tooth or process within the rather shallow fissure-like cavity; staminal column 1-1 1/4 lin. long; anther-appendages very small, transverse, rounded, erect, applied to the margin of the truncate style-apex, but not or very slightly inflexed over it.