498 MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



narrower, less crowded blades, and in the subcapillary spikes, florif- 

 erous only on the upper half or third; lemma awnless or with a 

 minute awn. Qi — Dry ground, Coastal Plain, New Jersey to 

 Florida and Louisiana (fig. 1058). 



3. Gymnopogon chapmanianus Hitchc. 

 (Fig. 1059.) m Culms 30 to 40 cm tall, in small 

 tufts, ascending, sparingly branching from lower 

 nodes, rigid; leaves approximate toward the 

 base, the blades 5 to 6 cm long, about 5 mm 

 wide, sharp-pointed, often subinvolute in dry- 

 ing; spikes ascending to spreading (not reflexed), 

 floriferous from base, spikelets not remote, 2- 

 or 3-flowered, the florets somewhat spreading; 

 lemmas pubescent, with a minute awn or awnless; palea very narrow, 

 arched. % — Sandy pinelands, Florida. 



102. CHLORIS Swartz. Fingergrass 



Spikelets with 1 perfect floret, sessile, in two rows along one side 

 of a continuous rachis, the rachilla disarticulating above the glumes, 



Figure 1056.— Distribution of 

 Gymnopogon ambiguus. 



Figure 1057 .—Gymnopogon brevifolius. Plant, X 1; floret, X 5. (Chase 3669, Va.) 



produced beyond the perfect floret and bearing 1 to several reduced 

 florets consisting of empty lemmas, these often truncate, and, if 

 more than one, the smaller ones usually enclosed in the lower, form- 

 ing a somewhat club-shaped rudiment; glumes 

 somewhat unequal, the first shorter, narrow, 

 acute; lemma keeled, usually broad, 1- to 5- 

 nerved, often villous on the callus and villous 

 or long-ciliate on the keel or marginal nerves, 

 awned from between the short teeth of a bifid 

 apex, the awn slender or sometimes reduced 

 to a mucro, the sterile lemmas awned or awn- 

 less. Tufted perennials or sometimes annuals 

 with flat or folded scabrous blades and two to several sometimes 

 showy and feathery spikes aggregate at the summit of the culms. 

 Type species, Chloris cruciata (L.) Swartz. Named for Greek 

 Chloris, the goddess of flowers. 



Figure 1058.— Distribution of 

 Gymnopogon brevifolius. 



