464 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
2. Panicum utowanaeum Scribn. 
Panicum utowanaeum Scribn. in Millsp. Field Mus. Bot. 2: 25. 1900; Contr. U.S. 
Nat. Herb. 15: 24. 1910. 
DISTRIBUTION. 
Open rocky soil, mostly near the coast, Cuba, Porto Rico, Guadeloupe, and Vene- 
zuela. The type specimen from Porto Rico. 
Cusa: Triscornia, Hitchcock 141, Tracy 
9089. Cayo Guajaba, Shafer 2830. 
Playa Marianao, Wilson 9497. 
Eastern Cuba, Wright 3452. 
Santo Domineo: Azua, Rose, Fitch 
& Russell 3891. 
Porto Rico: Guanica, Millspaugh Pl. 
Utow. 702, Sintenis 3365, 3416, 
3463, Chase 6520. Santa Rita, Chase 
Fra. 12.—Distribution of P. utowanaeum. 6535. Laguna Guanica, Chase 6533. 
Mona, Hess 431, 455, 457. 
LEEWARD IsLANDs: Guadeloupe, Duss 3177. 
VENEZUELA: Near Puerto Caballo, Pittier 6434. 
3. Panicum chapmani Vasey. 
Panicum chapmani Vasey, Bull. Tor- 
rey Club 11: 61. 1884; Contr. U. S. 
Nat. Herb. 15: 24. 1910. 
DISTRIBUTION. 
Coral sand and shell mounds, south- 
ern Florida and the Bahamas. The 
type specimen from Florida. 
BaHAmAS: New Providence, Brit- 
ton & Bracé 401. Rose Is- 
land, Britton & Millspaugh 
2137. Great Exuma, Britton & Millspaugh- 3076. (All in Field Mus. 
Herb.) 
Fig. 13.—Distribution of P. chapmani. 
4, Panicum ramisetum Scribn. 
Panicum ramisetum Scribn. U. 8. Dept. 
Agr. Div. Agrost. Cire. 27: 9. 1900; Contr. 
U.S. Nat. Herb. 15: 25. 1910. 
DISTRIBUTION. 
Sandy plains and prairies, southern Texas 
and northern Mexico. The type specimen 
from Texas. 
Coanuma: Near Diaz,! Pringle 8323. 
Fig. 14.—Distribution of P. ramisetum. 
1 The ‘‘ Guia Postal de la Reptiblica Mexicana’’ has been followed in the accent- 
ing of Mexican geographical names. , 3 
2 
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