HITCHCOCK AND CHASE—TROPICAL NORTH AMERICAN PANICUM. 463 
Culms stout, erect or nearly so; spikelets 
turgid, sparsely hirsute. 
76. P. rudgeit. 
Spikelets glabrous. 
Culms straggling; spikelets minute. 
68. P. trichanthum. ( 
Culms erect or stiffly ascending; blades 
linear, usually elongated. 
Sheaths glabrous; culms 1.5 to 2 meters 
Laurea yeas 40. P. ichnanthoides. 
Sheaths hirsute, orif glabrous the culms 
less than 1 meter high. 
See Dirrusa, p. 480. 
ANNOTATED LIST OF THE SPECIES. 
Subgenus PAUROCHAETIUM Hitche. & Chase. 
Blades less than 10 cm. long, not narrowed toward the base; 
splcelets 2b0mh, 2-onIM LONG. soos eh ee fe Oe ce 4. P. ramisetum. 
Blades elongated, usually more than 15 cm. long, narrowed 
toward the base. 
First glume rounded or truncate; second glume about as 
[enya SIs NS a eS Se 3. P. chapmani. 
First glume acute; second glume about two-thirds as long as 
fruit. 
Spikelets 1.5 mm. long; blades involute............... 1. P. distantiflorum. 
Spikelets/2 mm. long; blades flat... 2... 0...42-+-2426% 2. P. utowanaeum. 
1. Panicum distantiflorum A. Rich. 
Panicum distantiflorum A. Rich. in Sagra, Hist. Cuba 11: 304. 1850; Contr. U.S. 
Nat. Herb. 15: 23. 1910. 
DISTRIBUTION. 
Limestone hills at low altitudes, Bahamas to Cuba and Haiti; Curacao. The type 
specimen from Cuba. : 
BawHAMAS: Inagua, Hitchcock in RTE ee 
1890, Nash & Taylor 893 (both ae Na eee 
Field Mus. Herb.). tae : 
Cusa: Playa de Cojimar, Hitchcock 
144, Leén 912. Near Habana, 
Le6n 305 b,567, 2382. Santiago, 
Leén917. Sillade Cayo, Shafer 
2512. Guanoroca, Wright 284. 
Hanabana, Wright 285. Playa ing 
de Marianao, Leén in 1909. Fig. 11.—Distribution of P. distantiflorum. 
Without locality, Wright 3452. 
Santo Dominao: Naranjo, Fuertes 1284. Los Charcos, Fuertes 1427. 
Curacao: Britton & Shafer 3088. Bonaire, Suringar in 1885. (K. U. Herb.)} 
1 Krug & Urban Herbarium. 
