VI. AGBOSTEDEAE
72. HORDEUM L
A tithhiJh or perennials with terminal cylindrical spikes of awned spikelets; spike' lets 1-flowered, 2 or 3 together at each joint of the rachis, sessile or on very short pedicels; rachilla articulated above the glumes and continued behind the palea of
WOOTON AND STANDLEY—FLORA OP NEW MEXICO. 107
the central spikelet into a naked bristle; glumes 2, narrowly lanceolate, subulate, or setaceous, rigid, persistent; lemmas lanceolate, rounded on the back, obscurely 5-nerved above, usually awned; palea shorter than the lemma, 2-keeled; stamens 3;
styles very short, distinct; grain sulcate, adherent to the palea.
KEY TO THE SPECIES.
Plants glaucous throughout 1. H. mwrmum.
Plants not glaucous.
Glumes 3 to 6 cm. long 2. H. jubatum.
Glumes 1 to 2 cm. long.
Awns spreading; spikes yellowish 3. H. caeapitomm.
Awns erect; spikes reddish or brownish green. 4. H. nodosum.
1. Hordeum murinum L. Sp. PI. 85.1753. Wall barley.
Type locality: "Habitat in Europae locis ruderatis."
Range: Native of Europe, widely naturalized in the United States.
New Mexico: Mangas Springs; Mesilla Valley,
2. Hordeum jubatum L. Sp. PI. 85. 1753. Squirrel-tail grass.
Type locality: "Habitat in Canada."
Range: Alaska and British America to California, New Mexico, and Missouri.
New Mexico: Farmington; Carrizo Mountains; Tunitcha Mountains; Chama;
Raton; Sierra Grande; Magdalena Mountains; Pecoe; Torrance; Rio Pueblo; Mora;
Pescado Spring; Santa Fe; Kingston; White Mountains. Plains and meadows, in the Upper Sonoran and Transition zones.
Often a troublesome weed in cultivated ground.
*
3. Hordeumcaeepitosum Seribn. in Pammel, Proc. Davenport Acad. 7: 245.1899.
Type locality: Edgemont, South Dakota.
Range : Wyoming and South Dakota to northern New Mexico.
New Mexico: Farmington (Standley 6904). Dry hills and plains, in the Upper Sonoran Zone.
4, Hordeum nodosum L. Sp. PI. ed. 2. 126.1762. Meadow barley.
Type locality: "Habitat in Italia, Anglia."
Range: Temperate North America, Asia, and Europe.
New Mexico: Tunitcha Mountains; Chama; Ramah; Grants Station; El Kito Creek; Rio Pueblo. Wet ground, in the Transition Zone.
73. SITANION Raf.
Cespitose perennials with mostly flat leaves and terminal bearded spikes; spike- lets usually 2, sometimes 3 or 1, at each joint of the rachia, 2 to several-flowered;
glumes many-parted from near the base or merely bifid, or subulate and entire, awned;
IftfYiniM terminating in a single long awn, or trifid and 3 awned; palea as long as the lemma, entire, bidentate, or 2-awned.
key to the species.
Glumes bifid from about the middle, the lobes abruptly divergent.
gVmt.hB long-villous 1. 8* molle.
Sheaths not villous.
Glumes 3 to 4 cm. long 2. S. cae&pUosum.
Glumes 2 to 3 cm. long 3. S. rigidum.
Glumes entire, subulate-setaceous.
Culm leaves long and flexuous 4. S. longifolium.
Culm leaves short, rigid, spreading.
Lemmas 10 mm. long, glaucous 5. S. brevifolium.
7 mm. long, soft-pubescent 6. S. pubiftorum.
108 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM,
1. Sitanion molle J. G. Smith, XJ. S. Dept. Agr. Div. Agroet. Bull. 18:17.1899.
Type locality: East side Buffalo Pass, Larimer County, Colorado.
Range: Colorado and New Mexico.
New Mexico: Craters; north of Ramah; Box S Spring; Chama. Open slopes, in the Upper Sonoran and Transition zones.
2. Sitanion caespitosum J. G. Smith, U. S. Dept. Agr. Div. Agrost. Bull. 18:16.
1899.
Type locality: Near Cliff, New Mexico. Type collected by J. G. Smith in 1897.
Range: Southwestern New Mexico.
New Mexico: Near Cliff; Mangas Canyon.
y/ 3. Sitanion rigidum J. G. Smith, U. S. Dept. Agr. Div. Agrost. Bull. 18:13. 1899.
Type locality: Cascade Mountains, Washington.
Range: Washington and California to Wyoming and New Mexico.
■ New Mexico: Summit of Organ Peak (Standley).
4. Sitanion longifolium J. G. Smith, U. S. Dept. Agr. Div. Agrost. Bull. 18:18.
1899.
Type locality: Near Silverton, Colorado.
Range: Wyoming and Kansas to Texas and Nevada.
New Mexico: Abundant from the Mogollon Mountains and Organ Mountains north- ward'to Las Vegas and westward across the State. Plains and rocky hills, in the Upper Sonoran and Transition zones.
6. Sitanion "brevifolium J. G. Smith, U. S. Dept. Agr. Div. Agrost. Bull. 18: 17.
1899.
Elymus brevifolvus Jones, Contr. West. Bot. 14: 20. 1912.
Type locality: Tucson, Arizona.
Range: Washington to Arizona and New Mexico.
New Mexico: Rio Pueblo; Sandia Mountains; Tierra Amarilla; Santa Fe Canyon;
Duran; Chama; Grants; Gallo Spring; Mangas Springs; Middle Pork of the Gila; Organ Mountains; Gilmorea Ranch. Plains and hillsides, in the Upper Sonoran and Tran- sition zones.
6. Sitanion pubiflorum J. G. Smith, U, S. Dept. Agr. Div. Agrost. Bull, 18: 19.
1899.
Type locality: Tucson, Arizona.
Range: Colorado to New Mexico and Arizona.
New Mexico: Carrizo Mountains; Tunitcha Mountains; Cedar Hill; Sierra Grande;
Raton; Las Vegas Hot Springs; Santa Fe; San Augustine Plains; Animas Creek;
Reserve; Roswell. Upper Sonoran Zone.
74. ELYDEUS L, Wild rye.
Tall erect perennials with flat leaves and closely flowered terminal spikes; spikelets 2 to 6-flowered, the uppermost imperfect, sessile, mostly in pairs, at the alternate notches of the continuous or jointed rachis, forming terminal spikes; rachilla jointed above the glumes and between the florets; glumes 2, nearly equal, rigid, narrow, 1 or 3-nerved, acute or awn-pointed, persistent; lemmas shorter than the glumes, rounded on the back, obscurely 5-nerved, obtuse, acute, or awned from the apex; palea a little shorter than the lemma, 2-keeled; stamens 3; styles short; grain adherent to the lemmas and paleas.
KEY TO THE SPECtES.
1 Lemmas not awned or with very short awns.
Glumes aristiform or narrowly subulate; spikelets usually
2 at each joint..., 1. E. triticoides.
Glumes lanceolate-subulate; spikelets usually single 2. E. simplex.
WOOTON AND STANDLEY—FLORA OF NEW MEXICO, 109
Lemmas long-awned.
Spikes narrow; spikelets erect.
Leaves 7 to 15 mm. wide, spreading; glumes lanceolate,
acuminate to short-awned 3. E. glaucus.
Leaves less than 5 mm. wide, mostly erect; glumes
narrowly linear-lanceolate, long-awned 4. E. Tnacounii.
Spikes broad; spikelets spreading.
Lemmas glabrous 7. E. braeJiysUufttys.
Lemmas pubescent.
Lemmas hirsute or villous 5. E. canadensis. . Lemmas strigoee-hispidulous or scabrous. 6. E. robustus.
1. Elymus triticoides Buckl. Proc. Acad. Phila. 1862: 99. 1863.
Type locality: "Rocky Mountains."
Range: Washington and California to Arizona and New Mexico.
New Mexico: White Mountain Peak; Mesilla Valley. Lower Sonoran to the Tran- sition Zone.
y 2, Elymus simplex Scribn. & Williams, U. S. Dept. Agr. Div. Agrost. Bull. 11:57.
1898.
Type locality: On banks of Green River, Wyoming.
Range: Oregon and Wyoming to northern Arizona and New Mexico.
New Mexico: Carrizo Mountains (Standley 7466). Dry plains and hills, in the Upper Sonoran Zone.
3. Elymus glaucus Buckl. Proc. Acad. Phila. 1862: 99.1863.
Elymus americanus Vasey «& Scribn.; Macoun, Cat. Can. PI. 2: 245. 1888.
Elymus sibirkus americanus Wats. & Coult, in A, Gray, Man. ed. 6. 673. 1890.
Type locality: "Columbia River."
Range: Alaska and California to Texas and the Great Lakes.
New Mexico: Chama; Tunitcha Mountains; Winsors Ranch; Johnsons Mesa.
Mountains, in the Transition Zone.
Y 4. Elymus macounii Vaeey, Bull. Torrey Club 13:119.1886.
Type locality: "Great Plains of British America."
Range: Manitoba and Saskatchewan to Nebraska and New Mexico.
New Mexico: Albuquerque (T^racy). Upper Sonoran Zone.
5. Elymus canadensis L. Sp. PL 83.1753.
Type locality: "Habitat in Canada,"
Range: British America to New Mexico and Texas.
New Mexico: Farmington; Raton Mountains; Pccos; Santa Fe; Las Vegas; Pescado Spring; Kingston; Sabinal; Mesilla Valley; White Mountains. Damp ground, Lower Sonoran to Transition Zone.
6. Elymus robustus Scribn. & Smith, U. S. Dept. Agr. Div. Agrost. Bull. 4: 37.
1897.
Type locality: Illinois.
Range: Montana and Illinois to New Mexico.
New Mexico: Mangas Springs.
V 7. Elymus brachystachys Scribn. & Ball, TJ. S. Dept. Agr. Div. Agrost. Bull. 24:
47./. 21. 1901.
Type locality: Oklahoma.
Range : South Dakota and Michigan to Mexico.
N e w Mexico : Black Range. Moist ground.
110 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM.
14. CYPERACEAE. Sedge Family.
Grasslike or rush like herbs; stems usually solid; roots fibrous; leaves narrow, with closed sheaths, the whole leaf sometimes reduced to a sheath; flowers perfect or unisexual, arranged in spikelets, one in the axil of each scale, the Spikelets solitary or clustered, 1 to many-flowered; perianth of bristles or wanting; stamens 1 to 3; styles
2 or 3; fruit a lenticular or trigonous achene.
KEY TO THE GENERA.
Flowers all unisexual, usually in separate spikes.
Achenes inclosed in a perigynium; glumes 1-flowered. 8. Carex (p. 116).
Achenes not inclosed in a perigynium; glumes
2-flowered 9. Kobresla (p. 124).
Flowers all, or at least part of them, perfect; spikelets similar.
Scales of the spikelets 2-ranked; spikelets more or less
flattened 1. Cyperus (p. 110).
Scales of the spikelets imbricated spirally in several ranks; spikelets not flattened.
Perianth bristles much elongated, woolly 7. Ebiophorum (p. 116), Perianth bristles short or wanting.
Spikelets 1 to 4-flowered; plants large, about
1 meter high, leafy... 2. Cladium (p. 112).
Spikelets several to many-flowered; plants mostly low.
Base of the style persistent, enlarged.
Leaves reduced to sheaths; spikelets
solitary 3. Eleocharis (p. 112).
Leaves not reduced; spikelets several,
mostly paniculate 4. Rtenophyllus (p. 114).
Base of the style deciduous, enlarged or narrow.
Perianth consisting of bristles 5. Scirpus (p. 114).
Perianth of a single hyaline scale— 6. Hemicabpha (p. 116).