. North American species of Leptochloa. First glume about one-half the second, £ mm. long. Flowering glumes short awned, somewhat viscid on the back. Fig. 9.—L. viscida. Distribution: Arizona: Pringle; Mearns 793, 833; Griffiths 1988. New Mexico:Wright 2041, 2044. Mexico: Pringle 814; Palmer 748. 748i, 692, 1789;Brandegee 5; Wright 1086. LEPTOCHLOA DTJBIA Nees in Syll. Ratisb. 1: 4. 1824. In an article entitledNovae plantarum species in horto botanico Bonnensi culta?, Nees ab Esen-beck. who signs the portion relating to Leptochloa, describes L. procera, andstates that it differs from Leptochlo
. North American species of Leptochloa. First glume about one-half the second, £ mm. long. Flowering glumes short awned, somewhat viscid on the back. Fig. 9.—L. viscida. Distribution: Arizona: Pringle; Mearns 793, 833; Griffiths 1988. New Mexico:Wright 2041, 2044. Mexico: Pringle 814; Palmer 748. 748i, 692, 1789;Brandegee 5; Wright 1086. LEPTOCHLOA DTJBIA Nees in Syll. Ratisb. 1: 4. 1824. In an article entitledNovae plantarum species in horto botanico Bonnensi culta?, Nees ab Esen-beck. who signs the portion relating to Leptochloa, describes L. procera, andstates that it differs from Leptochloa gracile, Humb. et Kunth n. gen. etsp. I. p. 168 (sub chlori), vaginis glabris, valvulis corollinis nudis, nee ciliatis,apice integris. mucronatis, nee aristatis, flosculorum numero minore . . A Leptochloa (Chlori) dubia Humb. et Kunth 1. c. p. 169; panicula aequali, neesubfastigiata, flosculorum numero minore, valvulis nudis, nee ciliatis . .He thus incidentally transfers these two species of Chloris to Leptochloa.(Fig. 10.). Fig. 10.— L. dubia. Chloris dubia H. B. K. Nov. Gen. 1: 169. 1815. Crescit in apricis subhumidis prope rupem porphyriticam el Penon, in convalle Mexicana, alt. 1168 dubia Mey. Fl. Esseq. 74. 1818. Refers Chloris dubia doubtfully to obtusiflora Willd. in Spreng. Syst. 1: 356. 1825. Mexico. Type brevispicata Buckley. Proc. Acad. Phil. 1862:93. 1863. Northern Texas.* I have examined Buckleys specimen in the herbarium cf the Philadelphia Academy. 16 NORTH AMERICAN SPECIES OE LEPTOCHLOA. Diplachne dubia Scribn. Bull. Torr. Bot. Club. 10: 30. 1883. Transferred tothe genus Diplachne. Leptochloa pringlei. Beal Grasses N. A. 2: 436. 1896. D. pringlei Vaseyinecl. Arizona, Pringle, 1884. In the Department herbarium is a specimencollected by Pringle in 1884 in Tucson (No. 13), which answers to thedescription given in Beals Grasses, but seems to me to be a small form ofL. dubia. This is figured in U. S. D. A.
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