Apocynum floribundum Greene

Apocynum jonesii Woodson, Ann. Mo. Bot
Gard. 17: 117. 1930.
Stems erect or somewhat ascending, 5-6 dm. tall, the branches opposite, glabrous throughout; leaves petiolate, or the lower subsessile, ascending or only slightly spreading, lanceolateoblong, 3-5 cm, long, 1-2 cm. broad, wholly glabrous; calyx-lobes ovate to ovate-lanceolate, 0.8-1 mm. long, glabrous; corolla urceolate, 2.5-3 mm. long, the lobes erect or ascending, glabrous externally; follicles unknown.
Type locauty: Flagstaff, Arizona. Distribution: Known only from the type locality.

Apocynum medium Greene, Pittonia 3: 229. 1897
Apocynum speciosum G. Mill. Proc. Biol. Soc. Wash. 13: 83. 1899.
Apocynum urceolifer G. Mill. Proc. Biol. Soc. Wash. 13: 85. 1899.
Apocynum Milleri Britton, Man. 739. 1901.
Apocynum divergens Greene, Leaflets 1: 56. 1904.
Apocynum Andrewsii Greene, Leaflets 1: 57. 1904.
Apocynum sarniense Greene, Leaflets 2: 167. 1912.
Apocynum insigne Greene, Leaflets 2: 178. 1912.
Apocynum ellipHcum Greene, Leaflets 2: 179. 1912.
Apocynum griseum Greene, Leaflets 2: 181. 1912.
Apocynum androsaemi folium var. griseum B€g. & Bel. Mem. Accad. Lincei V. 9: 677. 1913.
Apocynum pumilum var. Milleri B6g. & Bel. Mem. Accad. Lincei V. 9: 686. 1913.
Apocynum macrophyllum B6g. & Bel. Mem. Accad, Lincei V. 9: 713. 1913.
Apocynum pseudomedium B6g. & Bel. Mem. Accad. Lincei V. 9: 714. 1913.
Apocynum Milleri var. pauciflorum Farwell, Rep. Mich. Acad. 17: 170. 1916.
Apocynum medium var. sarniense Woodson, Ann. Mo. Bot. Gard. 17: HI. 1930.
Stems erect or ascending, 2-5 dm. tall, freely and somewhat dichotomously branched, especially below, the branches ascending, alternate to opposite, glabrous to puberulent; leaves opposite, petiolate to subsessile, usually spreading, ovate to oblong-lanceolate, 6-10 cm. long, 1.5-2 cm. broad, occasionally somewhat cordate at the base, glabrous to somewhat puberulent above, more or less pilosulous to tomentulose beneath; calyx-lobes ovate to lanceolate, 1.5-4 mm. long, glabrous to sparsely pilosulous; corolla campanulate to broadly urceolate, 3-6 mm. long, the lobes spreading, white or with pinkish veins; follicles 7-15 cm. long, pendulous at maturity.
Type locawTy: Middle eastern United States [Brookland, D. C.].
Distribution: Newfoundland to Ontario, southward through the eastern United States generally, and westward to Minnesota and New Mexico.