28 ASCLEPIADACEAE, Vor, LiL. 
to. Asclepias amplexicailis J. E. Smith. Blunt-leaved Milkweed. Fig. 3392. 
A, amplexicaulis J. E. Smith, Georgia Insects 1: 13. 
bl. 7. 1797. 
A. obtusifolia Michx. Fl, Bor. Am. 1: 115. 1803. 
Nearly glabrous, pale green, somewhat glau- 
cous; stem stout, erect or ascending, 2°-3° high. 
Leaves sessile, oblong or ovate-oblong, obtuse 
-and mucronulate at the apex, cordate-clasping at 
the base, 3-5’ long, 1-13’ wide, margins wavy- 
crisped; umbels many-flowered, usually solitary 
on the long terminal peduncle, rarely with a 
second shorter-peduncled one at its base; pedi- 
cels slender, downy, about 1’ long; corolla-seg- 
ments oblong, greenish-purple, about 4” long; 
column thick; hoods pink, nearly truncate and 
toothed at the summit, shorter than the subulate 
incurved horn, longer than the anthers; follicles 
erect on the stout decurved fruiting pedicels, 
downy, 4’-6’ long. 
In dry fields, mostly in sandy soil, New Hamp- 
shire to Florida, northern New York, Minnesota, 
Nebraska and Texas. Ascends to 3000 ft. in Vir- 
ginia. May—Aug. 
A. Bicknéllii Vail, Bull. Torr. Club 31: 458, is ap- 
parently a hybrid between A. amplexicaulis J. E. 
Smith and A. exaltata (L.) Muhl. 
11. Asclepias intermedia Vail. Intermediate 
Milkweed. Fig. 3393. 
A, intermedia Vail, Bull. Torr. Club 31: 459. 1904. 
Stem erect, glabrous, purplish, not glaucous, about 
1° high. Leaves oblong-elliptic, glabrous above, mi- 
nutely pubescent beneath, 6’ long or less, obtuse at 
both ends or the upper subcordate at the base, the 
petioles very short; umbels 2 or more, terminal, pe- 
duncled, the peduncles and slender pedicels pubes- 
cent; corolla green-purple, its oblong-lanceolate seg- 
ments 3-4” long, the erect hoods ovate-lanceolate, 
obtuse, about 3” long, pink-purple, with a darker 
stripe on the back, the margins with an erect tooth 
above the middle, the horn slender. 
Lawrence, Long Island. Possibly a hybrid between 
A, syriaca and A, amplexicaulis, 
12. Asclepias Méadii Torr. Mead’s Milkweed. 
Fig. 3394. 
A, Meadii Torr.; A, Gray, Man. Ed. 2, Add. 704. 1856, 
Nearly glabrous throughout, pale green or glaucous; 
stem simple, or rarely branched above, 1°-2° high. 
Leaves opposite, sessile, flat, mostly distant, ovate, 
ovate-lanceolate, lanceolate or the lower oblong, acute 
or sometimes obtuse at the apex, the margins scabrous; 
umbel solitary, terminal, several-flowered, borne on a 
peduncle 3’-6’ long; corolla-segments greenish, ovate, 
acute, 3-4” long; column very short, thicker than 
high; hoods ovate, purplish, nearly twice as long as 
the anthers, rounded and truncate at the summit, 
| longer than the subulate inflexed horn, with a small 
tooth at each side on the inner infolded margin; folli- 
cles erect on decurved pedicels, minutely puberulent, 
narrow, 4’-5’ long. 
In dry soil, Illinois to Iowa and Wisconsin, June-Aug. 
