Hitchcock — The Grasses of Hawaii 163 



Open grassland at low altitudes, a weed along streets and in lawns and 

 gardens ; introduced. Originally described from southern Europe. Native name 

 manienie. 



Kauai : Lihue, Forbes 465. 

 Oahu: Honolulu, Hitchcock 1370S; Didrichsen 3444. Hauula, Farmer 12. Wai- 



kiki, Heller i960. \\'ithout locality, Remy 82 (Gray Herbarium). 

 Hawaii: Hilo, Newell in 1917. 

 ^A'ithout locality: Hillebrand. 



27. CHLORIS Swartz. 



Spikelets with i perfect floret, sessile, in two rows along one side of a continuous rachis, 

 the rachilla disarticulating above the glumes, produced beyond the perfect floret and bearing 



1 to several reduced florets consisting of empty lemmas, in .some species truncate, and, if more 

 than one, the smaller ones inclosed in the lower, forming generally a club-shaped rudiment ; 

 glumes somewhat unequal, the first shorter, narrow, acute : lemma keeled, usually broad, i 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 awnless. Perennial or sometimes annual, tufted grasses, with 

 flat blades and few to several often show}- and feathery spikes aggregate at the summit of the 

 culms. 



Plants annual 



Rudiment broad and truncate i. C. paragiiayensis. 



Rudiment narrow, acute 2. C. radiata. 



Plants perennial. 



Awn less than 2 mm. long; plants abundantly stoloniferous 3. C. gayana. 



Awn more than 5 mm. long ; plants not stoloniferous 4. C. truncata. 



1. Chloris paraguayensis Steud. Syn. PI. Glum. 1:204. 1854. 



Aiidrof^ogoii harbatiiin L. Mant. PI. 2:302. 1771. Not Aiidrof^ogoii barbafuin L. Syst. 

 Nat. ed. 10. 2:305. 1759. which is Chloris polydactyla Swartz. 



Chloris barbata Swartz. Fl. Ind. Occ. i :200. 1797. 



Plants annual : culms 30 to 60 cm. tall, glabrous : sheaths glabrous, shorter than the inter- 

 nodes ; blades flat, mostly less than 10 cm. long ; spikes few to several, 2 to 5 cm. long, erect or 

 ascending, often a little flexuous, purplish ; spikelets closely imbricate ; glumes narrow, acute, the 

 first 1.5 mm., the second 2 mm. long; fertile lemma broad, obovate, rounded at the summit, 



2 mm. long, a little pilose along the keel, the callus appressed-pilose. the marginal nerves long- 

 silky on the upper half, the slender awn about i cm. long; palea of fertile lemma as long and 

 nearly as broad as the lemma, the keels marginal ; rudiment about i mm. long, of two triangular- 

 truncate thin sterile lemmas, one within the other on a slender stipe, lifted to about the height of 

 the fertile lemma, the awns about 5 mm. long (fig. 51). 



A weed along streets ; introduced. Originally described from Paraguay. 

 Oahu: Honolulu, Hitchcock 13711, 14066; Faurie 1282; Newell in 1917. 



2. Chloris radiata (L.) Swartz, Prodr. \'eg. Ind. Occ. 26. 1788. 



Agrostis radiata L. Sy.st. Nat. ed. 10. 2:873. I759- 



Plants annual; culms decumbent at base, 30 to 60 cm. long; sheaths glabrous, compressed; 

 blades flat or folded, 5 to 15 cm. long, 2 to 4 mm. wide, scabrous; spikes ascending, slender, 

 numerous, 4 to 8 cm. long, pubescent at the base, the rachis puberulent ; glumes narrow, awn- 

 pointed, the second 2.5 mm. long; fertile lemma firm, compressed, narrow, acute, 3 mm. long, 

 short-pilose at base, the margins incurved, the marginal nerves short-pilose toward the tip, the 

 awn delicate, 5 to 10 mm. long; sterile lemma narrow, acute, inclosed by the fertile lemma, 

 the awn 3 to 5 mm. long (fig. 52). 



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