Vermischte neue Diagnosen. 573 
— Middlesex County, S. B. Buckley, September, 1835: New Haven 
County, Robbins. — Pennsylvania. — Philadelphia County, S. S. 
Van Pelt, July 10, 1908. — Maryland. — Prince Georges County, 
H. H. Bartlett, 1873. — Tennessee. — Haywood County, S. M. Bain, 
321. — Missouri. — Boone County, F. P. Daniels, June, 1903; Cass 
County, G. C. Broadhead, June, 1865; Jasper County, B. F. Lutman, 
August 1, 1901, and E. J. Palmer, 832; Saline County, William Tre- 
lease, June 23, 1886. — Kansas. — Cherokee County, A. S. Hitch- 
cock, 830 (pro parte). — Arkansas. — St. Francis County, William 
Trelease, August 20, 1897; Sebastian County, J. M. Bigelow, in 
1853—54. — Texas. — Harris County, J. F. Joor, June 20, 1877; 
Upshur County, J. Revershon, 2497 and 4033. 
112. Dioscorea hirticaulis Bartlett, l. c., p. 17. -— Rhizoma horizontale, 
plerumque simplex vel raro furcatum, usque ad 50 em longum, crassi- 
tudine ca. 8 mm; ramulis paucis lateralibus abortivis quam rhizomate 
multo tenuioribus, 0,5—2 cm longis; caulium cicatricibus saepe inter se 
10—12 cm distantibus saepe binis trinisve approximatis. Caulis gracilis 
scandens flexuosus 2—3-metralis, hirtellus. Folia infima 3 verticillata 
vel propinqua, superne alterna, laminis cordatis 7—9 nerviis, supra 
glabris subtus griseo-pubescentibus, margine saepissime repandis; petiolis, 
praecipue ad apicem versus, hirtellis. Inflorescentiae masculae solum in 
foliorum axillis superiorum positae, densiflorae, inferiores vix ramosae, 
superiores paniculatae; pedunculo perbrevi ramulisque sub lente pubes- 
centibus, alato-angulatis. Perigonium 6-partitum immaculatum. Stamina 
6, filamentis perbrevibus; antheris bifido-didymis. Spicae femineae soli- 
tariae 1—4 florae; capsulis circumscriptione obcordatis 2 cm longis, 
aetate castaneis. Semina fusca. — Dioscorea hirticaulis is probably con- 
fined to the region of the fall line and to ihe Coastal Plain, for no 
stations are known further inland. As it occurs about Thomson, Ga., 
it is confined to the branch swamps, where its long rhizomes run hori- 
zontally barely beneath the surface of the black muck soil. The only 
other Dioscorea of the region, D. quaternata, with which it shows not 
the least intergradation, has a totally different habitat. — Specimens 
examined: North Carolina: Cumberland County, Biltmore Herb., 364b. 
— South Carolina: Berkeley County, H. W. Ravenel — Georgia: 
McDuffie County, H. H. Bartlett, 1468. 
113. Dioscorea floridana Bartlett, 1. c., p. 18. — Rhizoma ignotum. 
Caulis scandens, flexuosus, glaber. Folia cordata, alterna, utrinque 
glabra, supra viridia, subtus pallidiora, 7-nervia, nervis exterioribus bi- 
furcatis. Inflorescentiae masculae paniculiformes et caulem terminantes 
et binis trinisve in foliorum axillis superiorem fasciculatae; floribus aut 
singulis aut binis sessilibus, valde flavis, maculatis; staminibus haud 
dídymis. Spicae femineae pendulae, solitariae, ca. 6-florae. Capsulae 
forma eis D. paniculatae similes, ca. 2 cm longae. — This species is 
very clearly distinguished from our other species by the position of the 
staminate inflorescences. In material collected by Mr. Harper in Georgia 
the larger inflorescence of an axillary fascicle exceptionally bears one 
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