In the northern prairie region, Bouteloua gracilis constitutes a very large proportion of the so-called. National Herbarium, indicated by a photograph of the specimens in the herbarium of the Museum in Paris. There is a specimen in the herbarium of the Botanical Garden of Madrid called Bouteloua simplex of Lagaaca.
Both Philippine specimens are from the province of Tarapaca in the far north of Chile. The species number (Drurnmond 323) in the herbarium of the museum in Paris and in the herbarium of St. A very unusual form of the species exists in the extreme western part of North Texas.
The tenacious character of the grass shows itself strikingly in regions of heavier travel. This number in the herbarium of the Paris Museum is exactly comparable to no.
BOUTLLOUA TEXAN \ S. WATS
Because of the many rhizomes and its interlocking nature, this is a pretty good forage grass. A cespitose, rugged, rigid perennial, with freely branched sterna and short, stout peduncles; sheaths striated, short but completely covered. ering of the lower internodes; blades rigid, divaricate, hard, keeled, sharply acuminate, 2 to 4 cm. long, ample below, but few above; panicle with 15 to 30 spikes scattered along the main axis, 5 to 10 cm. long, occasionally 2 or 3 spines together; spines loose and. long; epiceles 15 to 20, consisting of a lower perfect floret, with 2 to 4 rudiments above; clumps very slightly scabbed and short-marked, the first slightly shorter than the second, approx. 2 mm. long, 3-marked, the central awn 2 or more times longer than the lateral; palette oval, 2-nerved, awnlcss, ca. 1.5 mm. long; rudiment consisting of 4 or even 5 well-developed 3-marked scales, similar to the lemma, but diminishing Fio. one, Spikelet; 6, c, lemma and palette of first flower; d-h, rudimentary second, third, fourth, fifth and sixth antlers; if two views and cross section of caryopsis, a, scale 10; b-i, scale 15. 406 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. in size upwards, the last sometimes facing a small 1-mark scale, the whole so crowded as to look like a bunch of awnings, and carried on a short, bare stave of approx. 1 mm. long, ovoid, flattened dorsally, the very small scutellum covering only one-fourth or one-fifth of the ventral surface. My knowledge of the species is based on Palmer's no., 1655, of the identity of which there appears to be no doubt.
A stout, erect, smooth, caespitose perennial, resembling B. curtipendula in habit and general appearance; culms erect, relatively strong, about 50 cm. tall, leafy to apex, mostly unbranched; coils striate, closed; leaves broad, flat, often 5 mm. long, long, smooth with toothed margin and conspicuous hairs, long, dark, papillose on upper surface at base, ligular membrane with a few scattered hairs of the same nature; Panicular racemose, often 25 cm. spikes numerous, 30 to CO, apparently bilateral, but peduncles so curved as to appear unilateral towards maturity; spikelets 6 to 15, loose and indistinct or not at all pectinate, consisting of 1 flower and a rudiment; glumes hispid, keeled, the first acuminate, about 2 mm. long, the second with a short awn, about 3 mm. tall; lemma small pubescent, shortly 3-aristate, the central tentacle 0.5 mm, or less longer than the lateral one, about 4 mm. blade, acute, smooth, about 2.5 mm. rudiment reduced to a single, thick, delicate tentacle, about 1.5 mm. Munro, however, was in error, as is readily shown by an examination of the Linnaean plant (see under Bouteloua americana Scribn.); Swartz, Obs. A type part, Wullschlagcl 619 and 660, Antigua, in the Grisebach Herbarium and a photograph are before me.
In parts of the Mexican highlands, where I judge the conditions to be similar to those of Texas, on the ocean slopes, and apparently in parts of South and Central America, the characteristics of the Texas form are pronounced, and the summits are distinctly of the genus and very branched. For the present it seems wise to recognize Desvaux's species, though unfortunately his name cannot be used, and to include under Fournier's the two Mexican highland forms, one of which reaches Arizona and is somewhat modified in Texas. Lagasca in the herbarium at Munich, and one from the herbarium of the Botanical Garden at Madrid, bearing this name in the hand of Lagasca, whose spikes are before me, should probably go with B.
Some of the older authors have listed it from Acapulco, but refer to it various forms of B. It is distinguished from other species of the group by its large, hard, glaucous aspect, and by the absence of papillose hairs on leaf margins.". The Haenke specimen in the herbarium of the German University of Prague shows that the species was correctly interpreted by Presl.
The National Herbarium and the Herbarium of the Brussels Botanical Garden, a Karwinski specimen in St. A sheet of the last-mentioned specimen in the National Herbarium is from the herbarium of the Paris Museum, and is said to have been determined by Fournier. Its leaves are larger and broader, the culms are larger and stronger, the papillose hairs on the edges of the leaves are more pronounced and visible, and the spikes are longer.
BOUTTLOUA F1LIFORMIS FOURN.1 GRIFFITHS
The following, all from Mexico, appear to be typical of the species: Liebmann 585, Consoquitla, and 575, Paxaca Valley. Wright 739 in the herbarium of the Paris Museum has both broad and narrow pointed forms on the same leaf. Duplicates of this number and other examples cited by Grisebach, Wright 734 and 3816 are well represented in.
Number 739 in the herbarium of the Paris Museum has, as mentioned above, both broad* and narrow** on the same leaf. Petersburg Herbarium without number or location; the other is Wright 739. This is clear from his description and citing of the last speci-. Some of these duplicates show the same facts as exhibited by Wright 739 in the herbarium of the Paris Museum.
Most specimens show a true perennial character, while B. americana is distinctly an annual. The first specimen of this species that I have known is Sckott 741, in the herbarium of the Field Museum of Natural History. The chief diagnostic character is the marked flowering and bilateral arrangement of the needles, which appears admirably in Kunth's figures.
1851, not Bouteloua graeilis Hook.« nor Lagasca.b The type of this species has been examined with the kindness of the director. This appears to be a good, average copy, although it does not cover all variations. This is the typical form in the mountains of the Southwest, but even there the canopies often fall off as they mature.
Sckaffner 535 and Bourgeau 2755, quoted by Fournier, are in the herbarium of the St. According to Hitchcock's notes on the Trinius Herbarium, the specimen of Trinius labeled K. raatmosn is placed there in the rover with B. curfipenduln, to what species it belongs. A specimen collected by Eggert in Jefferson County, Missouri, August 1891, in the herbarium of the Missouri Botanical Garden, has pronounced papillose hairs on the edges of the leaves and very broad tips, but other plants of the same collection. The hairs are also papillose, but occur on the underside of the leaves and the upper part of the sheath.
