MANUAL OF THE GRASSES OF THE WEST INDIES WT 
ing, often curved, 5 to 10 cm long; rachis flat, wing-margined, 1 mm 
wide or somewhat less, glabrous; spikelets elliptic, 1.5 mm long, 
cinereous-pubescent; first glume wanting; second glume and sterile 
lemma equal, about as long as the dark brown fertile lemma (fig. 109). 
Open ground, fields, waste places, and moist grassland, China to 
India and Australia; introduced in the American Tropics. 
Bermupa: Collins 146; Brown and Britton 57. 
JAMAICA: St. Andrew, Harris 12714. Cinchona, Harris 11269, 
11271%, 12484; Hitchcock 9708. Castleton, Harris 11283; Hitchcock 
9396. Abbey Green, Hitchcock 9354 (Amer. Gr. Nat. Herb. 556). 
Gordon Town, Hart 688, 756; Hitchcock 9328. 
Puerto Rico: Mayaguez, Chase 6255. 
TRINIDAD: Port-of-Spain, Hitchcock 10008, 10328. Las Lilas, 
Britton 2515. Piarco Savanna, Britton and Hazen 716. Princes Town, 
Broadway 1922. Mora Forest, Broadway 7752. Tamana Main Road, 
Broadway 4961. Without locality, Bot. Gard. Herb. 3433. 
6. Digitaria ischaemum (Schreb.) Schreb.; Muhl., Descr. Gram. 131. 
1817. SMOOTH CRABGRASS. 
Pamcum ischaemum Schreb.; Schweigger and Koerte, Spec. FI. 
Erlang. 16. 1804. Europe. 
Digitaria humifusa Pers., Syn. Pl. 1: 85. 1805. 
Syntherisma glabrum Schrad., Fl. Germ. 1: 163. 1806. 
Digitaria glabra Beauv., Ess. Agrost. 51. 1812. 
Syntherisma ischaemum Nash, N. Amer. Fl. 17: 151. 1912. 
Spreading annual weed resembling D. sanguinalis, but with glabrous 
foliage; spikelets 2 mm long; first glume wanting. 
Common in eastern United States; Virgin Islands; introduced 
from Europe. 
VirGIN Istanps: St. Croix, Benzon. 
7. Digitaria longiflora (Retz.) Pers., Syn. Pl. 1: 85. 1805. 
Paspalum longiflorum Retz., Obs. Bot. 4: 15. 1786. India. 
Panicum longiflorum Gmel., Syst. Nat. 2: 158. 1791. 
Syntherisma longifiora Skeels, U. S. Dept. Agr., Bur. Plant Indus. 
Bull 261-230; 1.942. 
Perennial; culms widely creeping; sheaths glabrous; blades flat, 
glabrous, those of the stolons 1 to 3 cm long; fertile culms ascending 
20 to 40 cm long; racemes often 2, sometimes 3 or 4, 3 to 6 cm long, 
usually curved, the rachis flat, 0.5 to 0.8 mm wide, the margin wider 
than the midrib; spikelets elliptic, minutely pubescent, 1.5 mm long 
(fig. 110). 
Ditches and sandy savannas, tropical regions of the Old World; 
introduced in the American Tropics. 
Cusa: Pinar del Rio, Hitchcock 23269, 23279, 23286; Kkman 17288; 
Roig 3954, 4200; Léon 12861, 16151, 16425. 
LEEWARD Isuanps: Antigua, Box 63, 182. 
WINDWARD IsLANDs: St. Lucia, Bor 199. 
TrintpaD: Long Stretch, Broadway 6551. 
8. Digitaria villosa (Walt.) Pers., Syn. Pl. 1: 85. 1805. 
Syntherisma villosa Walt., Fl. Carol. 77. 1788. South Carolina. 
?Panicum domingense Zuccagni, in Roemer, Coll. Bot. 123. 1809. 
Santo Domingo. 
