MANUAL OF THE GRASSES OF THE WEST INDIES 421 
pointed callus below the fertile one. Perennial or annual, often 
robust grasses, with leafy compound panicles. 
Perfect spikelets villous; glumes of sessile neuter spikelets not strongly papil- 
LOS Cee owen ee ete ee eae Ree eae ATER LE a 1. T. ARGUENS. 
Perfect spikelets not villous; glumes of sessile neuter spikelets strongly papillose, 
MMe Rp Apa beanie One Stitt Mains eae eee Te 2. T. QUADRIVALVIS. 
GEES 
AA 
Ave 
i <A, 
FIGURE 371.—Hackelochloa granularis. Plant, X 14; single raceme, X 2; two views of spikelets with rachis 
joint, X 5 (Pringle). 
1. Themeda arguens (L.) Hack., in DC., Monogr. Phan. 6: 657. 
1889. CHRISTMAS GRASS. 
Stipa arguens L., Sp. Pl. ed. 2.117. 1762. India. 
An ascending annual with compressed branching culms, flat 
scabrous blades, and V-shaped clusters of long-awned spikelets; 
fruit dark brown, the awn 5 to 7 cm long (fig. 372). 
