372 NasH: ENUMERATION OF THE 
Second empty scale acute : awn of the flowering scales usually long. 
27. Chloris. 
Second empty scale truncate or 2-toothed: flowering scales awnless or awn - 
pointed. 28. Eustachys. 
Spikes scattered, single. 29. Heterosteca. 
2. Spikelets with 2-3 perfect flowers. 
Spikes usually digitate: spikelets crowded. 
Spikes with terminal spikelets. 30. Eleusine. 
Spikes with the rachis extending beyond the spikelets in a manifest point. 
31. Dactyloctentum. 
Spikes distant : spikelets alternate. 32. Leptochloa. 
Tribe IX. FESTUCEAE 
Tall grasses with large dense hairy panicles and broad flat leaf-blades. 
Dioecious : staminate spikelets glabrous. 33. Gynerium. 
Hermaphrodite : spikelets hairy. 34. Phragmites. 
Low grasses with open glabrous panicles. 
Empty scales 2: flowering scales 3-nerved. 35. Eragrostis. 
Empty scales 3-6: flowering scales many-nerved. 36. Uniola. 
Tribe X. BAMBUSEAE 
Grasses with woody stems and the leaves often fasciculately arranged. 
37. Arthrostylidium. 
1. COU 1... Sp. Ph. 972... 1753 
1. Corx Lacuryma-Josr L. Sp. Pl. 972. 1753. 
In wet places, frequent. Between Aibonito and Cayey, Hel- 
ler 528; Rio Piedras, Goll 316; Adjuntas road, near Ponce, Hel- 
ler 6075. 
2. HACKELOCHLOA Kuntze, Rev. Gen. 2: 776. 
: 1891 
Manisuris Sw. Prod. 25. 1788. 
I. HACKELOCHLOA GRANULARIS (L.) Kuntze, Rev. Gen. Pl. 2: 
776. 1891. 
Cenchrus granularis L. Mant. §75. 1771. 
Manisuris granularis Sw. Prod. 25. 1788. 
Near Mayaguez, Heller 4401. 
3. SCHIZACHYRIUM Nees, Agrost. Bras. 331. 1829 
I. SCHIZACHYRIUM brevifolium (Sw.) Nees; Kunth, Enum. 1f: 
488. 1833. 
Andropogon brevifolius Sw. Prod. 26. 1788. 
Adjuntas road, near Ponce, Heller 6230. 
