NORTH AMERICAN Sl'KCIES OF LEl^OCHLOA. 



19 



San Lxiis de Potosi" (Virl., 

 1891. Transfers Leptochloa 



Lept ochhui virh'tii Fonrn. P\. Mex. 2: 147, IHSC). 

 n. 1404). Type specimen examined at Paris. 



RalMlochloa imbric(ff(( Knntze. Rev. Gen. 3: 788, 

 iinbnvata Thurb. 



Resembles in habit L. fiiscintldris Gray. The panicle is more oblong in outline, 

 being more compact and with shorter branches, and often dark colored and 

 more exserted. Spikelets also resemliling L. f<tscicitl(iris. but the empty 

 glumes are broader and more obtuse, and the flowering glumes are somewhat 

 apiculate but not awned. 



Fig. \i.—L. imhricata. 



Distribution: Arizona: Palmer 548, 51; Lemmon 860: Vasey 540. California: 

 Wright 2118: Coulter 776. Te.vas: Tracy 7367. Me.rico: Palmer 47, 184. 881, 

 216, 5; Meams 2741. Argentina: Hieronymus 1088. Paraguay: Morong 981. 



There is a Leptnchliut verticiUata from the East Indies (Kimth Gram. 1: 91. 1885. 

 Eleusinc verticiUata Roxb., Hort. Beng. s. 1814). 



Diplachne tarapacariim Philippi from Chili appears to belong here, judging from 

 the specimen in herbarium U. S. D. A. (Anal. Mus. Nac. Chili. Bot. 88. 1891.) 



LEPTOCHLOA SPICATA Scribn. Proc. Acad. Sci. Phila., 1S91. 304. 1891. 

 Transters Diptlachne spicata. (Fig. 15.) 



Fig. 15.— I,, spicata. 



Bromus spicat7is 'Nees. Agrost. Bras., 471. 1829. " Habitat in campis. campo 

 mimoso dictis, provincise Piauhianae." Nees observes that in habit this 

 forms a transition to Brachypodimn or Agropyron, but differs in the few 

 nerved glumes; nor does it fit in Diplachne any better, since the native species 

 has the glumes not at all apiculate, and foreign species differ much otherwise. 



