This volume of Contributions is devoted to the flora of New Mexico, Mr. Rydberga Flora of Colorado1 is very satisfactory for use in the extreme northern part of the state. Wooton's collections deposited in the Herbarium of the Faculty of Agriculture, besides many specimens not to be found elsewhere.
Stamens as many as the lobes of the corolla and alternate with them or fewer. Most of the species occur in crevices or under overhanging rocks in the drier and warmer mountain ranges. The species should occur in some of the areas in the western part of the state.
HARSILEACEAE
Miss Ellis reports that this is found in crevices and under rocks near Balsam, at Lagunita, and on the ridges between the latter place and Las Huertas Canyon.
S AL VINIACE AE
New Mexico: Common in low hills and high plains everywhere west of Pecoe and in the mountains of the northeastern corner of the state. This is the commonest tree of New Mexico and Arizona, and accounts for perhaps two-thirds of the timber of the former state. Type locality: "Higher parts of the Rocky Mountains, from New Mexico to the headwaters of the Columbia and Missouri rivers.
New Mexico: Common in all higher mountains of the Las Vegas, Sacramento and Organ areas westward. Range: Mountains of southern Arizona and northern Mexico, extending into the southwestern corner of New Mexico. Type of place: "From the Pikes Peak region of Colorado through West Texas and New Mexico to Arizona and California.".
EPHEDBA L
Lemmon states that this form is "abundant in the Sandia Mountains, near Albuquerque", New Mexico. New Mexico: Carrizo Mountains; Farmington; Santa Fe; Albuquerque; Naia visa; Orgelbergen; San Andreas Mountains; Dona Ana Mountains; White Sands; Roswell. New Mexico: Mangas Springs; Gila; San Antonio; Carrizalillo Mountains; Doming; Las Cruces; Organ mountains.
Range : In ponds and slow streams throughout North America except in the extreme northern part. A perennial herb similar to the preceding, but the lower flowers of the inflorescence perfect instead of pistillate; leaves broadly sagittate. Spikelets unisexual, the pistillate borne in the lower, the staminate in the upper part of the same spike % MAYDEAE.
PHALABIDEAE
Spikelets very compressed, falling from entire stems, 1-flowered, or sometimes with a rudimentary flower below the perfect one. Lemmas, at least those of perfect flowers, similar in structure to glumes or thicker and stronger, never hyaline. Lemma and palea membranous; spikelets in groups of 3, falling together from the continuous axis within.
Lemma and palea from weaving to coriaceous, different in color and structure from glumes; various spikelets. Spikelets laterally compressed, at least at maturity, the needles usually persisting on the pedicel or raceme after the flowers have fallen, 1 to many-flowered, the rudimentary flower, if any, usually uppermost. Spikelets on one side of the continuous axis, forming unilateral spikes, these digitate or paniculate Vllll.
AGBOSTEDEAE
TBIPSACTJM L
Tall perennial with creeping rootstocks, broad flat leaves and terminal digitate inflorescence, spikes dividing at nodes at maturity; spikelets unisexual, Btaminate in pairs at the nodes of the rachis above, pistillate single, imbricate at each node of the rachis below in the same inflorescence; glumes of the staminate needle subcorial, those of the pistillate needle at the cartilaginous end, the lemmas and paleas hyaline. Rather tall perennials with narrow and usually solitary leaves, long spreading racemes; spikes 1-flowered, in pairs at the nodes of the imperfectly connected racemes, one almost sessile, terminal, sterile, the other pedicellate, fertile, long awned; glumes rigid, outer large and other closing; lemmas produced in long twisted geniculate awns. Tall perennials, tufted or from rootstocks, with flat or pinnate leaves, and spikes like solitary racemes terminating its stem or branches; spikelets in pairs at each node of rachis united and often hairy, one sessile and fertile, the other pedicellate and sterile; glumes strong, sometimes pubescent; lemma entire or 2-toothed at apex, bearing a straight, twisted or spiral tentacle; marrow small, hyaline; stamens 1 to 3; distinct styles.
Tall perennials, tufted or from elongate bases, with flat or involute leaves and with racemose inflorescences arranged in pairs or sometimes 3 or more, terminating the stem or its branches; spikelets sometimes with a ring of short hairs at the base, in pairs at each node of articulated and often pubescent rachis, one sessile and fertile, the other pedicellate and sterile; husks hardened, often pubescent; leaflets entire or 2-toothed at apex, sessile or sometimes sessile; pale small, hyaline; stamens 1 to 3; different styles,. The sessile spikelets are glabrous or nearly glabrous except on the nerves; rachis hairs of internodes 3 to 4 mm. New Mexico: near Portales; Buchanan; northeast of Clayton; the mountains west of Las Vegas; Nara Visa; Arroyo Ranch.
HOLCUS L
Range: Arizona and New Mexico to Tropical America; in tropical countries almost around the world. New Mexico: Mogollon Mountains; Manga's Springs; Lake Valley; Socorro; Deming; Burro Mountains; Organ Mountains; Carrizozo. New Mexico: Common on the plains and lowlands from the Black Range and White Mountains southward; also collected by Bigelow at Laguna Colorado.
Type locality: "On the high plains of the Trap Formation at the headwaters of the Canadian River," Colorado or New Mexico. Galleta grass occupies the same position in northern New Mexico as tobosa in the south. New Mexico: Albuquerque; Manga's Springs; Black row; Dog Jump; Dona Ana and Organ Mountains; Causey.
PASPALTJM L
AGROSTIS L
Range: British America to California and New Mexico and the Gulf Coast; also in the Old World. This is one of the most valuable grasses in the southern part of New Mexico.
ARTJNDO L
HORDEUM L
New Mexico: Tunitcha Mountains; Farmington; Carrizo Mountains; Pecoa; Sandia Mountains; Santa Fe and Las Vegas mountains; Raton Mountains; Albuquerque; New Mexico: Chama; Shiprock; Dulce; Carrizo Mountains; Sierra Grande; Tunitcha Mountains; Pecos; Cowles; Taos; Johnson's Mesa; Raton; Coolidge; Puertecito;. New Mexico: Abundant from the Mogollon Mountains and Organ Mountains north to Las Vegas and west across the state.
New Mexico: Farmington; Raton Mountains; pccos; Santa Fe; Las Vegas; Pescado Spring; Kingston; Sabinal; Mesilla Valley; White Mountains. Grassy or rush-like herbs; stems usually sturdy; roots fibrous; leaves narrow, with closed sheaths, the entire 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 defect; stamens 1 to 3; styles.
CYPERUS L
ANTHERICUM L
BETULA L. BIRCH
The type was collected only two miles from the New Mexico line, and the species, but little doubt, occurs at the northern end of the range in New Mexico. Type locality: "On the margins of small streams within the Rocky Mountain Range, and then in the valleys of the Blue Mountains of Oregon.". Listed species cover material in New York and Washington and that in the New Mexico Agricultural College herbarium.
The relationship with the other species is not so easy to see, each species stands more or less on its own in New Mexico. Scales of the calyx thin, only slightly corky-thickened on the back; mature leaves yellowish green. Lobes few and shallow, appearing as a few largo teeth; some of the leaves oval in.
One of the two easily recognized species of the state, found only in the mountains of the southwestern part. The plant accepted here is one of two common shrubs with blue-green leaves in the mountains of the northern part of the state. This is the common black oak of the southwestern part of the state and is easily recognized.
They are produced early in the season and are much appreciated by the animals of the region. It is often a shrub growing in woods and, in the mountains of the southern part of the State, equally often a solitary tree. Most of the deciduous, green-leafed oaks of New Mexico and Colorado have stumps or truncated acorns, and are listed here under other names.
The trees are mainly found in the arroyos of the foothills and on the drier slopes of the mountains.
EY TO THE FAMILIES
ARISTOLOCHZA L
SALSOLA L
A variegated branched shrub with linear fleshy leaves; endure flowers naked, in aments; pistillate flowers with a saccate calyx adhering at the 2-lipped tip to the base of the stigmas; calyx laterally margined with an erect 2-lobed rim which eventually becomes a broad membranous wing. Type* locality: "Common on the barren grounds of the Columbia, and especially near salt marshes.". It is now found in practically every locality in the state except in the higher mountains.
The common name is misleading, as the plant does not resemble thistle in any way except for its thorns. When the plants dry, they are detached from the ground and blown by the wind like herbs. 1. Delicious, more or less moist herbs or suffrutescent plants with inconspicuous flowers and fruits; leaves terete, alternate; flowers located in the axils of leaf-shaped leaves;.
Type locality: "From western Texas to southern California and northern Mexico, in salt flats.". It is frequently called "yerba de burro" by the Mexican laborers in the southern part of the state, but this is probably the result of a confusion of the plant with the true burro weed (Allmrolfea occidentalis), which is much less common in the region occurs. Succulent erect multi-branched perennial plant, somewhat woody at the base; leaves scaly, broadly triangular; flowers in dense veins, in threes in the axils of the spiral bracts.
Type locality: "Around the Great Salt Lake and in the alkaline valleys west to the sinkholes of the Carson and Humboldt rivers." The genus contains several species that are valuable as fodder plants, but most of them are consumed more or less. One {A. expan&a) is a common grass on cultivated land in some parts of the country.
The plants grow mostly in open flats, prefer fairly compact soils, and all tolerate high alkalinity in the soil.
