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 102nd meridian . apex, not exceeding theanthers, the involute margins spreading at thebase into auricles; follicles 2-^ long, curved. In dry soil, Nebraska and Colorado to Texasand New Mexico. June-Sept. 5. Acerates lanuginosa (Nutt.) Woolly Milkweed. Fig. 3413. Asclepias lanuginosa Nutt. Gen, i: 168. 1818. Acerates lanuginosa Dec. in DC. Prodr, 8 : 523. 1844. Hirsute all over; stems ere
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 102nd meridian . apex, not exceeding theanthers, the involute margins spreading at thebase into auricles; follicles 2-^ long, curved. In dry soil, Nebraska and Colorado to Texasand New Mexico. June-Sept. 5. Acerates lanuginosa (Nutt.) Woolly Milkweed. Fig. 3413. Asclepias lanuginosa Nutt. Gen, i: 168. 1818. Acerates lanuginosa Dec. in DC. Prodr, 8 : 523. 1844. Hirsute all over; stems erect, slender, simple,6-i8 high. Leaves oblong, ovate-lanceolate orlanceolate, obtuse at the apex, narrowed orrounded at the base, short-petioled, 1-4 long,4-i5 wide; umbel solitary, ternnnal, denselymany-flowered, peduncled ; peduncle stout, denselyhirsute, i-ii long; pedicels slender, puberulentor hirsute; corolla greenish, its segments oblong,about 22 long; column none; hoods purplish,oblong, obtuse, entire, with a flat fold or auricleon the infolded lower ventral margins, shorterthan the anthers; anther-wings broadest belowthe middle. On prairies, northern Illinois to Minnesota, Ne-braska and Wyoming. 36 ASCLEPIADACEAE. Vol. III. 4. GONOLOBUS Michx. Fl. Bor. Am. i: 119. [Ampelanus Raf.; Britton, Bull. Torr. Club 21: 314. 1894.][Enslenia Nutt. Gen. i: 164. 1818. Not Raf. 1817.]Perennial twining herbaceous vines, with petioled opposite cordate thin leaves, and smallwhitish flowers in axillary peduncled clusters. Calyx S-parted, minutely glandular within,the segments lanceolate. Corolla campanulate, deeply 5-cleft, the lobes slightly contorted,nearly erect. Crown nearly sessile, of 5 membranous truncate lobes, each appendaged by asimple or 2-cleft awn. Stamens inserted at the base of the corolla, the filaments connateinto a short tube; anthers terminated by an inflexed membrane; pollen-masses solitary ineach sac, ellipsoid, pendulous. Stigma conic, slightly 2-l
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
