ASCLEPIADACEZX.  (MILKWEED FAMILY.) 965 
16. A. verticillata, L. Stem slender, branching, pubescent; leaves 
narrowly linear, with the margins revolute, 4-5 in a whorl; umbels several, 
small, the peduncle and pedicels nearly equal; corolla greenish ; leaves of the 
crown white, roundish, half as long as the slender incurved horn. — Open woods 
and fence-rows, Florida, and northward. July - Sept. — Stem 29-39 high. 
Leaves 1/-2/ long. Follicle smooth. 
+ + + + + Leaves alternate, or the lowest opposite. 
17. A. tuberosa, L. Hirsute; stem erect or declining, widely branched 
above, very leafy; leaves varying from linear to oblong, acute, short-petioled ; 
umbels numerous, corymbose ; corolla yellowish-orange ; leaves of the crown 
bright orange, erect, oblong-lanceolate, twice as long as the gynostegium, and 
rather longer than the slender incurved horn. — Light dry soil, common. June 
and July. — Stem 19 — 2? long. 
18. A. Michauxii, Decaisne. Pubescent ; stems several, short, prostrate ; 
leaves linear, erect, the lower ones mostly opposite; umbels 1 —3, terminal, 
Sessile or peduncled; flowers gray and purple; leaves of the crown ovate, 
spreading, as long as the subulate horns, and longer than the gynostegium ; 
follicle long, linear-lanceolate, tomentose. (A. angustifolia, Ell., Michx. in part.) 
— Low sandy pine barrens, Florida to South Carolina. April-May.— Stems 
9/-12'long. Leaves 3/-4'long. Follicle 4/—5/ long. Flowers fragrant. 
§ 2. Stem shrubby: seeds mostly naked. —.— es 
19. A. perennis, Walt. Stem branched, pubescent in lines, shrubby at 
the base; leaves thin, lanceolate or oblong-lanceolate, tapering at each end, 
paler beneath; umbels 5 —7, long-peduncled, pubescent, the upper ones corym- 
bose ; corolla small, white ; leaves of the crown spreading, half as long as the 
needle-shaped, erect horn; follicle ovate-lanceolate, smooth. (A. parviflora, 
Pursh. A. debilis, Michx.) — Muddy banks of rivers, Florida to South Caro- 
lina, June-Aug. — Stem 1°-2° high. Leaves 2! ~ 4! long. 
2. ACERATES, Ell. 
* 
leaves of the crown destitute of a horn-like appendage. Otherwise like 
Asclepias, 
; * Leaves opposite. j 
.L A. viridiflora, Ell. Pubescent; stem stout, simple; leaves varying 
from oval or obovate to lanceolate, acute, obtuse, or emarginate, undulate, short- 
Petioled ; umbels lateral and terminal, nearly sessile, densely many-flowered ; 
small, greenish; leaves of the crown oblong, erect, as long as the sessile 
&ynostegium. — Dry sterile soil, Florida, and northward. June and July. — 
‘Stem 1°-1}0 high. Leaves 1}/- 2}! long. i 
?. A. connivens, Decaisne. Stem stout, simple, pubescent above; ,eaves 
nearly sessile, erect, mucronate, the lower ones approximate, oblong or oblong- 
‘obovate, the upper more distant, smaller and lanceolate; umbels 3-6, 6-9- 
ered, the stout peduncle and pedicels nearly equal, pubescent ; flowers large, — 
m oF o o 
