20 NORTH AMERICAN SPECIES OF LEPTOCHLOA. 



Tricuspis (Triplasis) simplex Griseb. Mem. Acad. Sci. and Arts. N. Ser. 8: 

 532, 1862. Plant. Wright. 2. " In rupibus aridis," Wright, 1551. 



Diplachne simplex Doell in Mart. Fl. Bras., 2 3 : 97. 1878. " Habitat in prov. 

 Piauhy ( Gardner n. 2367)." 



Diplachne spicata Doell I.e., 159. 1878. This is a correction. "'Pag. 97. Delea- 

 tur Diplachne simplex; legatur Diplachne spicata, nt conservetnr nomen 

 specincmn." 



Triodia schaffneri Wats. Proc. Am. Acad., 18: 181. 1883. ' ' In the Escabrillos 

 Mountains. San Lnis Potosi (1077 Schaffner) closely resembling in habit the 

 Cuban Tricuspis simplex of Grisebach and Diplachne spicata Doell of Brazil. 

 It is clearly a Triodia as the genus is defined by Mr. Bentham.*' 



Diplachne r 'ever 'choniYasej. Bull. Torr. Bot. Club. 13: 118. 1886. •'Collected 

 on granitic rocks, Llano Co., Texas, by Mr. J. Reverchon." 



Triplasis setacea Griseb. in Goett. Abhandl., 24: 304. 1879. Plants? Lorentz- 

 ianse). "Pr. la Merced. S.: ad fl. Juramento." In his remarks upon this 

 species Grisebach says: "Species T. simplici Gr. (PL Wright. Cub., II. p. 532) 

 proxima."' 



Stems tufted, slender, 1 to 3 dm. high. Leaves usually about one-half the height 

 of the flowering culm, numerous, narrow, slender, and involute. Infloresence 

 reduced to a single spike. 5 to 10 cm. long. Spikelets 4 to 7 mm. long, several 

 flowered. Empty glumes acute, flowering glume short awned. 



Distribution: Texas: Reverchon, 1613: Nealley, 78. Mexico: Pringle. 3267. 

 Argentina: Hieronymus. 337. Brazil: Gardner. 2367. 



Diplachne loliiformis F. von M. of Australia closely resembles this. 



Besides those species mentioned above are three described by Fonr- 

 nier, which I have not seen. Copies of the original descriptions of 

 these are here appended. 



LEPTOCHLOA LIEBMANNI Fourn. PI. Mex.. 2: 147, 1886. 



Culmo elato 2-3 pedali, valde ramoso. stramineo, glabro; foliis infra longe vaginan- 

 tibus mollibus lanceolatis, 4-5" latis. ligula fimbriata; panicula longa stricta, 

 radiis appressis. secundifloris: spiculis 4-floris, glumis inaequalibus. inferiore 

 aucta dimidio breviore, superiore obtusa obscure trilobata, lobo medio mucro- 

 nato; palea exteriore acuta carina ta. 



Antigua, februario (Liebm., n. 248): absque loco (Liebm., n. 244). 



DIPLACHNE PATENS Fourn. PI. Mex.. 2: 148. 1886. 



Culmo a basi ramoso, ramis circulariter ascendentibus glabro. striate, stramineo, 

 nodis brunneis. ligula hyalina acuta saepe laciniata. foliis longis linearibus 

 angulo recto divergentibus, acutis; panicula invaginata, radiis alternis patulis 

 flexuosis scabris. spiculis 7-floris: gluma inferiore dimidiam superiorem non 

 aequante. exteriore violacea acuminata carinata scabra: rhachi inter flores 

 flexuosa; palea inferiore carinata, nervo medio prominente acuminata, supe- 

 riore duplo minore, bicarinata. obtusa, apice integra. 



Vera Cruz (Gouin. n. 93). 



LEPTOCHLOA PANICULATA Fourn. Bui. Soc. Bot, France (ser. 2), 27: 

 296. 1880. 



Culmo 3-pedali, cum nodis glabro: foliis latis brevibus. acuminatis. ligula brevi 

 laciniata: inflorescentia pedali, axi paniculae et radiorum scabro; radiis 

 primariis primum patulis, dein divaricatis, in dimidia inferiore parte radiolos 

 semipollicares emittentibus: spiculis 3-4 floris muticis, floribus remotis, glumis 

 aequalibus. palea exteriore bidentata mutica. 



Absque loco (n. 1079). 



