HITCHCOCK AND CHASE—TROPICAL NORTH AMERICAN PANICUM. 523 
DISTRIBUTION. 
Moist sandy woods, southeastern United States, Cuba and Porto Rico. 
Cusa: Without locality, Wright 
3876. 
Porto Rico: Martin Pefia, Chase 
6357. Between Catafio and 
Guainabo, Chase 6631. Lake 
Loisa, Chase 6783. Santurce, 
Heller 982b, 6442. Vega Baja, 
Heller 639, Underwood & 
Griggs 955. Campo Alegre, 
Chase 6434. Fig. 128.—Distribution of P. portoricense. 
1038. Panicum lancearium Trin. 
Panicum lancearium Trin. Gram. Pan. 223. 1826; Contr. U. S. Nat. Herb. 15: 273. 
1910. 
T 7 r | TJ DISTRIBUTION. 
i 6 
i 
a oy Lek Sandy pine woods, southeastern 
re United States, British Honduras, 
"Ses Cuba, and Santo Domingo. The type 
LEN — ESSE "1 specimen from North America, the 
Sh Sif ‘,| exact locality not known. 
f Lo »- 
“ Brimsh Honpuras: Sibune 
4 River, Peck 425 (Gray Herb.). 
—— Cusa: San Juan de Buenavista, 
Fig. 129.—Distribution of P. lancearium. Wright 3460 ( Gray Herb.). 
Santo Domineo: Constanza, Tiirckheim 3321. 
PEDICELLATA. 
104. Panicum nodatum Hitchce. & Chase. 
Panicum nodatum Hitche. & Chase, 
Contr. U. 8. Nat. Herb. 15: 293. 1910. 
DISTRIBUTION. 
Oak woods and wooded sand dunes, along 
the coast of Texas and adjoining Mexico. 
The type specimen from Texas. 
Mexico: Matamoros, Berlandier 988, 2418 
(Gray Herb.). 
F¥iq. 130.—Distribution of P, nodatwm. 
SCOPARIA. 
Vernal culms erect or ascending; plants velvety throughout; 
spikelets about 2.5 mm. long.........--------+++---+-+--- 105. P. scoparium. 
Vernal culms decumbent at base; upper sheaths more or less 
glabrate; spikelets less than 2 mm. long.........-.------- 106. P. viscidellum. 
