84 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Type Locauiry: ‘“Crescit in apricis subhumidis prope rupem porphyreticam el 
Penon, in convalle Mexicana, alt. 1168 hexap.”’ 
Rance: Arizona and western Texas to Florida and Mexico. 
New Mexico: Mangas Springs; near White Water; Dog Spring; near Silver City; 
Organ Mountains; Tortugas Mountain; Carlsbad. Dry hills, in the Lower and Upper 
Sonoran zones. 
44. ACAMPTOCLADOS Nash. 
Tufted perennial with stiff stems, involute leaves, and a panicle of scattered, dis- 
tant, widely spreading, rigid branches; spikelets scattered, singly disposed in 2 rows, 
sessile, 4 to 6-flowered; glumes subequal, acuminate, the first 1-nerved, the second 
usually 3-nerved; lemmas 3-nerved, acute, indurated in fruit; palea compressed, the 
2 nerves ciliolate, gibbous at the base; stamens 3; styles distinct. 
1. Acamptoclados sessilispicus (Buckl.) Nash in Small, Fl. Southeast. U. 8. 140. 
1903. 
Eragrostis sessilispica Buckl. Proc. Acad. Phila. 1862: 97. 1863. 
Diplachne rigida Vasey, U. 8. Dept. Agr. Div. Bot. Bull. 12: pl. 41. 1891. 
Tyre Locauity: Near Austin, Texas. 
RanaeE: Kansas and Texas to eastern New Mexico. 
New Mexico: Sands south of Melrose; Nara Visa. Plains, in the Upper Sonoran 
Zone. 
45. BECKMANNIA Host. SLouan Grass. 
Tall erect plant with flat leaves and terminal elongated inflorescence; spikelets 1 
or 2-flowered, compressed, imbricated in 2 rows along one side of the rachis of the 
shor. .ikes; glumes narrow, boat-shaped, obtuse or abruptly pointed, nearly equal; 
lemmas narrow, acute or mucronate; palea hyaline, 2-keeled; stamens 3; styles short, 
distinct; grain oblong, inclosed within the rigid fruiting lemma and palea, free. 
1. Beckmannia erucaeformis (I.) Host, Icon. Gram. Austr. 3:5. 1805. 
Phalaris erucaeformis L. Sp. Pl. 55. 1753. 
Type Locauity: ‘‘Habitat in Siberia, Russia, Europa australi.’’ 
RanGE: British America to California, New Mexico, and Iowa; also in Europe and 
Asia. 
New Mexico: Farmington; Chama; Grants Station; Zuni. In marshes and along 
streams, in the Transition Zone. 
46. CAPRIOLA Adans. 
Low creeping perennial with short flat leaves and slender spikes digitate at the 
apex of the erect branches; spikelets 1-flowered, awnless, sessile in 2 rows along one 
side of a slender continuous axis, forming unilateral spikes; glumes narrow, keeled, 
usually acute; lemma broader, usually slightly longer than the glumes, obtuse, pilose 
on the keel and margins; palea about the length of the lemma, 2-keeled; stamens 3; 
styles distinct; grain free. 
1. Capriola dactylon (L.) Kuntze, Rev. Gen. Pl. 2: 764. 1891. Brrmupa erass. 
Panicum dactylon 1, Sp. Pl. 58. 17538. 
Cynodon dactylon Pers. Syn. Pl. 1: 85. 1805, 
Type Locauity: ‘‘ Habitat in Europa australi.’’ 
RanGE: Native of the Old World, widely introduced in southern North America, 
often cultivated as a lawn grass. 
New Mexico: Mesilla Valley. 
Bermuda grass is often employed in New Mexico for lawns. It is especially valu- 
able for this purpose in the southern part of the State, since it is resistant to heat and 
drought. Sometimes it becomes a troublesome weed in cultivated fields, 
