. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. ASCLEPIADACEAE. Vol. 10. Asclepias amplexicaulis J. E. Smith. Blunt-leaved Milkweed. Fig. 3392. A. amplexicaulis J. E. Smith, Georgia Insects 1: 13. pi. 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-obiong, obtuse and
. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. ASCLEPIADACEAE. Vol. 10. Asclepias amplexicaulis J. E. Smith. Blunt-leaved Milkweed. Fig. 3392. A. amplexicaulis J. E. Smith, Georgia Insects 1: 13. pi. 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-obiong, obtuse and mucronulate at the apex, cordate-clasping at the base, 3'-$' long, l'-il' 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. Bicknellii 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: 450. 1904. Stem erect, glabrous, purplish, not glaucous, about i° 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, a
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
