92 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
’ 44a, Panicum virgatum cubense Griseb. 
Panicum virgatum cubense Griseb. Cat. Pl. Cub. 233. 1866. The only specimen 
neninoned by Grisebach is, “‘Wr. a. 1865,”’ that is, caileg ee in Cuba by Wright in 
1865. ‘The type, in the Grisebach Herbarium, bears 
the number 183 and is labeled ‘‘Low savannas, * 
Hanabana, May 19.”” ®° 
Panicum virgatum obtusum Wood, Bot. & Flor. 
392.1874. ““N.J.’’ [New Jersey]. The whereabouts 
of the type, if it be in existence, is not known. 
The diagnosis ‘‘ Panicle contracted; spikeletssmaller, 
not pointed, obtusish,’’ seems sufficiently to indi- 
cate this subspecies. 
Panicum virgatum breviramosum Nash, Bull. Tor- 
rey Club 23: 150. 1896. ‘‘Collected by Dr. Small 
in clay soil in the pine lands about Augusta, 
Georgia, where it was common, June 27-July 1, 
1895.” The type, in Columbia University Herba- 
rium, is a slender plant with narrow panicles about 12 cm. long and 3 to 4 cm. wide, 
AN rather getarny seer and asa, nD veny like Wright’s no. 183 mentioned above. 
ie DESCRIPTION. 
Fig. 81.—P. virgatum cubense. From 
type specimen. 
Differs from P. virgatum in having culms more slender than usual in the species, 
solitary or few in a clump, usually narrow panicles with ascending branches, and 
smaller spikelets, 2.8 to 3.2 mm. long, ee 
the first glume usually about half the V 
length of the spikelet, acute but usually 
not acuminate-pointed, the second 
glume and sterile lemma about equal 
and but slightly exceeding the fruit, 
the latter about 2 mm. long. 
This combination of characters fails 
to hold throughout. A few of the 
specimens cited below have open pan- 
icles, but the small, obtuse spikelets 
with shorter first glume; others have Fig. 82.—Distribution of P. virgatum cubense. 
the panicle characteristic of the sub- 
species but an acuminate-pointed first glume to the small spikelets. The following 
represent these intermediate specimens: ConNEcTICUT: Graves 244; New JERSEY: 
Pearce in 1884; Norra Carouina: McCarthy in 1885; FiLortpa: Chase 3859, 3860, 
Hitchcock 743, Hume 37. 
4 4 
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DISTRIBUTION. 
Pine woods, the Atlantic Coastal Plain from Connecticut to Florida; also in the 
Bermudas and Cuba. 
(eingwenean: Groton, Graves 244. 
New Yorx: Aquebogue, Scribner in 1872 (Hitchcock Elen: )e 
New Jmersny: Atsion, Chase 3573; New Durham, Van Sickle in 1895; without 
locality, Pearce in 1884. 
PENNSYLVANIA: Philadelphia, Smith 109. 
MaryYLAnpb: College Park, Novik in 1907. 
VireiniA: Ashland, DeChalmot; Portsmouth, Noyes 87. 
NortH Carouina: Edenton, Kearney 1899; Tarboro, McCarthy in 1885; Wil- 
mington, Chase 3144, Coville 104, Kearney 267b; Hendersonville, Biltmore 
Herb. 700e. 
HO RENER oSTuam , Taman. 
