282 BOTANY. 



APOCYNACE.^. 



Apocynum andeos^mifolium, L. Mostly glabrous throughout. From 

 North Carolina to Hudson's Bay and west to Kansas and the Saskatchewan, 

 and from "Washington Territory to the Sacramento. East Humboldt Mount- 

 ains, Nevada, and in the Wahsatch and Uintas ; 6-8,000 feet altitude ; July, 

 August. (957.) - 



Apocynum cannabinum, L. 3-6° high ; cauline leaves 4' long or more 

 and 2' broad, sessile and amplexicaul, the rameal ones much smaller and 

 petioled ; glabrous. Used by the Indians as a substitute for hemp in making 

 nets, &c. From Florida to Canada and Winnipeg Valley, and west to New 

 Mexico, Sonora and California. On the Humboldt River and on stream- 

 banks in the West Humboldt Mountains, Nevada, and shores of Salt Lake ; 

 4-5,000 feet altitude ; June-September. (958.) 



ASCLEPIADACE^. 



AscLEPiAS FAScicuLAEis, Dccne. DC. Prodr. 8. 569. Stems erect, 

 glabrous, 3-5° high; leaves crowded in fours or fives, 2-5' long, short-petioled, 

 hnear, mucronulate, glabrous, uniform in color, not revolute, subcoriaceous, 

 nerves thick beneath ; peduncles shorter than the leaves, umbeled, densely 

 flowered; pedicels and flowers softly puberulent; corolla-lobes ovate, reflexed, 

 about equaling the pedicels; hoods ovate upon the back; horns falciform, 

 acute ; crown stipitate ; pods smooth, narrow, 2V long and 2i" wide. — Diflfer- 

 ing from A. verticillaris only in its less pubescence, more densely flowered 

 umbels, more distant whorls of leaves and stouter habit. Oregon to Southern 

 California. West Humboldt Mountains, Nevada; 5,000 feet altitude ; August, 

 September. (959.) 



AscLEPiAS SPECIOSA, Torr. DC. Prodr. 8. 571. {A. Douglasii, Hook., 

 DC, I. c, 564.) Tomentose ; stem simple, 2-5° high ; leaves 4-8' long, 

 cordate-ovate, acute, short-petioled, or the uppermost sessile ; umbels axillary 

 and terminal, sohtary, many-flowered, the short peduncles and the pedicels 

 densely tomentose; flowers light-purple; corolla-lobes ovate, acutish, reflexed; 

 hoods of the crown 6" long, ovate, long-acuminate, bidentate at the base 

 within, thrice longer than the stigma and the compressed incurved horn ; 

 pods 4' long, 1' in diameter.— From Washington Territory and Northern 

 California to Dakota, Colorado and New Mexico. The prevalent species of 



