374 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
SPARTINA CYNOSUROIDES (L.) Roth. In the National Herbarium there is a 
specimen of this species, consisting only of an inflorescence, labeled “ Bahama 
Tslands.” 
78. CHLORIS Swartz. 
Spikelets with 1 perfect floret, sessile along a slender rachis forming unilat- 
eral spikes, these digitate; glumes unequal; lemma awned or mucronate ; 
rachilla prolonged behind the palea and bearing 1 to few rudimentary awned 
sterile lemmas. In Cuba the species are called “ pata de gallina” because of 
their digitate spikes. Those with villous florets are often included in the 
general name “barba de indio” (Indian beard). 
Lemmas awnless; spikes dark brown. (Eusracuys.)---------._1. C. petraea. 
Lemmas awned; spikes pale or purplish. 
Sterile floret narrow, the apex acute or subacute; spikelets imbricate, not 
pectinately arranged. 
Spikes numerous, at least 10, ascending; spikelets approximate. 
5. C. radiata. 
Spikes not more than 6; spikelets somewhat distant. 
Culms leafy throughout; spikes erect__________ | 4. C. leptantha. 
Culms naked or with few remote leaves; spikes divergent. 
Spikelets divergent; plant delicate; blades filiform. 
2. C. cruciata. 
Spikelets appressed ; plant slender but wiry; blades 1 to 2 mm. 
wide _-___-_-_.-- 3. C. sagraeana. 
Sterile floret broad, truncate, broadest at the summit; spikelets pectinately 
arranged. 
Plants perennial; commonly more than 1 meter tall. 
10. C. polydactyla. 
Plants annual; usually less than 75 em, tall, 
Awn of fertile lemma not longer than the body; lemma long-ciliate 
on keel and margins____-_---_--_- 9. C. ciliata. 
Awn of fertile lemma at least twice as long as the body. 
Sterile florets 2; sterile lemmas nearly as broad as long. 
8. C. paraguayensis. 
Sterile floret 1; sterile lemma narrow, more than twice as 
long as broad. 
Margins of fertile lemma ciliate from near the base, the 
hairs 0.5 mm, long; sheaths hairy in the throat. 
6. C. orthonoton. 
Margins of fertile lemma bearing near the apex a promi- 
nent tuft of hairs about 2 mm. long; keel of lemma 
ciliate to near the summit; sheaths glabrous in the 
throat ~~~ 7. C. virgata. 
1. Chloris petraea Swartz, Prodr. Veg. Ind. Oce. 25. 1788. 
Agrostis complanata Ait. Hort. Kew. 1: 96, 1789. 
Hustachys petraea Desv, Nouv. Bull. Soc. Philom, Paris 2: 189, 1810, 
Schultesia petraea Spreng. Pl. Pugill. 2: 17. 1815. 
Chloris septentrionalis C. Muell. Bot. Zeit. 19: 340. 1861. 
Chloris swartzii C. Muell. Bot. Zeit. 19: 341. 1861. 
Chloris swartziana Doell in Mart. Fl. Bras. 2*: 68. 1878. 
A glabrous glaucous sparingly stoloniferous perennial, the flat culms ascend- 
ing, the keeled sheaths often in pairs, especially in robust plants, the flat, 
