WOOTON AND STANDLEY FLORA OF NEW MEXICO. 83 



broad sheaths of the upper leaves, the ghimes 2, or the first sometimes wanting, 3- toothed 

 at the apex, the lemma narrow, hyaline, entire or bifid at the apex; styles distinct; 

 grain free. 



1. Bulbms dactyloides (Nutt.) Raf.; Kuntze, Rev. Gen. PI. 763. 1891. 



Scslcria dactyloides Nutt. Gen. PI. 1: 65. 1S18. 



Bufhloc dactyloides Engelm. Trans. Acad. St. Louis 1: 432. 1859. 



Type locality: "On the open grassy plains of the Missouri." 



Range: North Dakota and Minnesota to Arkansas and Mexico. 



Nkw Mexico: Sierra Grande; Nara Visa; Raton; Santa Fe; Coolidge; Pecos; Logan; 

 Buchanan; Mcsilla Park. Plains, in the Upper Sonoran Zone. 



43. LEPTOCHLOA Beauv. 



Mostly tall annuals with flat loaves and elongated simple panicles composed of 

 numerous more or less spreading, slender spikes scattered along the main axis; spike- 

 lets 2 to several-flowered, sessile in 2 rows along one side of the slender and often 

 numerous branches; rachilla jointed above the glumes, these 2-keeled, awnless or 

 very short-awned; lemmas carinate, 3-nerved, acute, awnless or very short-awned 

 or 2 or 3-toothed, mucronate or short-awned between the teeth; palea 2-keeled. 



KEY TO THE SPECIES. 



Spikelets 2.5 mm. long or less, broad, 2 to 4-flowered. 



Sheaths pilose 1. L. filijormis. 



Sheaths not pilose 2 . L. nealleyi. 



Spikelets 3 mm. long or more, narrow, 5 to 12-flowered. 



Lemmas pubescent at the base; annual 3. L. fascicularis. 



Lemmas glabrous; perennial 4. L. dubia. 



1. Leptochloa fdiforinis (Lam.) Beauv. Ess. Agrost. 71. 1812. 

 Festuca Jiliformis Lam. Tabl. Encycl. 1: 191. 1791. 

 Elev^ine mucronata Michx. Fl. Bor. Amer. 1: 65. 1803. 

 Leptochloa mucronata Kunth, Rev. Gram. 1: 91. 1835. 



Type locality': "Ex Amer. Merid." 



Range: Virginia and Florida to California and Mexico; also in the West Indies 

 and southern Asia. 



New Mexico: Hillsboro; Mesilla Valley. Sandy fields, in the Lower Sonoran 

 Zone. 



2. Leptochloa nealleyi Vasey, Bull. Torrey Club 12: 7. 1885. 

 Type locality: Texas. 



Range: Western Texas and southeastern New Mexico. 

 New Mexico: Carlsbad (Traq/ 8191). Plains. 



3. Leptochloa fascicularis (Lam.) A. Gray, Man. 588. 1848. 

 Festuca fascicularis Lam. Tabl. EncycL 1: 189. 1791. 

 Festuca procumhens Muhl. Descr. Gram. 160. 1817. 

 Uralepis composita Buckl. Proc. Acad. Phila. 1862: 94. 1863. 

 Diplachne procumhens Nash in Britton, Man. 128. 1901. 

 Type locality: "Ex Amer. Merid." 



Range: Maryland and Florida to South Dakota and Mexico. 



New Mexico: Salt Lake; Socorro; Mesilla Valley; Roswell; Carlsbad. Sandy 

 fields, in the Lower Sonoran Zone. 

 The ty|3e of Uralepis composita was collected in New Mexico by ^^'oodhouse. 



4. Leptochloa dubja (H. B. K.) Nees, Syll. PI. Ratisb. 1: 4. 1824. Sprangle. 

 Chloris dubia H. B. K. Nov. Gen. & Sp. 1: 169. 1815. 



Diplachne dubia Scribn. Bull. Torrey Club 10: 30. 1883. 



