Asclepias flexuosa (e.Mey. ex Decne.) Schltr.

Plant 1/2-1 (rarely up to 2) ft. high, branching at the base; stems probably decumbent at the base, ascending or erect, more or less flattened, unifariously or bifariously puberulous; leaves very spreading or deflexed, very shortly petiolate, 1/2-1/4 in. long, 3/4-2 lin. broad, linear, acute, slightly hastate or cordate at the base, somewhat scabrous-pubescent on the midrib beneath, otherwise glabrous, coriaceous; umbels solitary, very rarely 2, terminal, 3/4-1 1/3 in. in diam., 6-14-flowered; peduncle 1/2-1 1/2 (rarely up to 3) in. long; bracts 1-3 lin. long, subulate; pedicels 3-7 lin. long, puberulous on one side; sepals 3/4-2 lin. long, 1/2-2/3 lin. broad, lanceolate or ovate-lanceolate, acute, thinly pubescent; corolla-lobes reflexed or reflexed-spreading, 1 3/4-2 1/2 lin. long, 1-1 1/2 lin. broad, oblong-ovate to elliptic-ovate, subobtuse, glabrous on the back, minutely papillate-puberulous on the inner face; corona-lobes arising at the base of and nearly twice as long as the staminal column, erect or ascending, 1 1/4-2 lin. long; basal half cucullate, dorsally rounded into the column with ^-shaped keels on the back, inflexed sides produced at the apex into short acute teeth resting on the anther-appendages, with a narrow wing descending obliquely from them nearly to the base, no tooth or process within; apical half lanceolate-oblong or elongate-deltoid-oblong, obtuse, concave, apparently marked with a dark mid-line; staminal column 3/4-1 1/4 lin. long; anther-appendages transversely oblong, emarginate or slightly bilobed, erect, not exceeding the margin of the truncate style-apex; follicles solitary, erect from a recurved pedicel, 2 3/4-3 1/2 in. long, 1/4 in. thick, terete-fusiform, tapering into a beak, smooth, glabrous; seeds about 2 1/2 lin. long, 1 1/2 lin. broad, ovate, rather broadly margined, with minute tubercles and short linear ridges on both sides, brown.