440 ASCLEPIADACE APOCYNUM 
: ASCLEPIAS 
es, 6-18 inches high, from deep-seated perennial roots: leaves ovate or 
roundish, 1-4 inches lung, abruptly and setaceously callous-mucronate, 
conspicuously petioled, pale and more or less pubescent beneath: flowers 
very fragrant, in open cymes: pedicels 2-3 lines long, subulate-bracted. at 
the base; corolla open-campanulate, about 4 lines broad, its tube much 
longer than the ovate acute lobes of the calyx, its short lobes recurved ; 
‘mature follicles 3-5 inches long. In dry open woods, California to Alaska 
and the eastern States. . 
Var. pumilum Gray Syn. Fl. ii, 82. Low: leaves roundish. Brit. 
Columbia to California. . 
A. cannabinum L. Sp 213.. Stems erect or ascending, 1-6 feet high, 
with ascending branches, glabrous, or sometimes soft-pubescent, leafy to 
the top: leaves from oval to oblong or even lanceolate, with ‘rounded or 
subcordate base, short petioled or sessile 2-6 inches long: cymes erect, 
densely flowered: corolla greenish-white or slightly flesh-colored its lobes 
almost erect, the tube not longer than the lanceolate calyx-lobes: follicles 
slender, 2-3 inches long. Moist meadows, California to Brit. Columbia 
and the eastern States. 
OrperR LXI ASCLEPIADACE® Lindl. Nat. Syst. ed. 2, 302. 
Mostly herbs with milky juice, usually opposite leaves with- 
out stipules, and regular perfect flowers in terminal or pseudo- 
axillary or sometimes axillary cymes; often umbelliform. Cal 
free from the ovary or nearly so, imbricated in the bud. Corolla 
5-merous, convolute, or often nearly valvate inthe bud. Stamens 
5, borne on the tube of the corolla and alternate with its lobes: 
anthers surrounding the stigma. Pollen in1 or 2 waxy mass- 
es, in ours all the pollen in each cellin one mass and attached to 
the stigmatic disk by the glands that alternate with the anthers. 
A crown of 5 parts or lobes usually present between the corolla 
and the mostly monadelphous stamens, and adnate either to the 
one or the other. Ovary of 2 cells that become follicles, or by 
abortion, one several to many-seeded follicle. Seeds almost 
always bearing along and soft coma. Embryo nearly as long 
as the seed, in mostly thin, cartilaginous albumen. 
Flowers with a hooded appendage behind each anther. 
1 pre wae An incurved horn or projecting crest from the cavity of 
each hooded appendage. 
2 Gomphocarpus Hooded appendages without horns or crests. 
1 ASCLEPIAS L. Gen. n. 306. 
Herbs with erect or merely spreading stems from deep and 
thickened perennial roots, opposite or sometimes verticillate or 
alternate leaves and terminal.and lateral umbellate inflorescence. 
Calyx 5-parted, commonly bearing some minute processes at the 
base within. Corolla rotate, 5-parted, dextrorsely valvate-con- 
volute in the bud. Crown consisting of 5 distinct cucullate or 
hollowed nectariferous appendages, opposite the anthers, that are 
involute or complicate and bearing a horn or crest-like process 
from the back or toward the base within, either sessile or elevat- 
