BOTANY. 
155 
Var. ? foliis angustioribus ; panicula exserta, axillis nudis ; gluma superiore obtusiuscula. 
Low places, G-alisteo, New Mexico ; October. Utricle obovate, somewbat coriaceous, closely 
investing the ripe seed, but easily separated ; loose before the seed is mature. 
Vilfa tricholepis (n. sp.) : culmo erecto simplici tereti, nodis distantibus, vaginis glabris, 
ligula truncata ; foliis angustis (| lin. latis) utrinque glabris, panicula oblonga, ramulis flex- 
uosis ; glumis subaequalibus acutiusculis valvulas subaequales pilosas \ brevioribus. Sandia 
mountains, New Mexico; October. Culms a foot or 18 inches long, growing in tufts. Branches 
of the panicle alternate, naked in the axils, when old somewhat open. Pedicels mostly rather 
longer than the spikelets, which are about a line in length. Glumes smooth and almost hyaline. 
Paleae nearly equal, very hairy on the back and margins, particularly on the nerves ; the lower 
palea 3-nerved. This seems to be a genuine Yilfa. 
Muhlenbergia gracillima (n. sp.) : ctespitosa, glabra ; culmo simplici; foliis angustissimis 
involutis brevissimis (1-1^ poll.), ligula elongata fissa ; panicula diffusa capillari, ramis sub- 
solitariis; pedicellis spicula (1J lin.) subduplolongioribus ; glumis muticis lanceolatis, paleis 
vix duplo brevioribus, palea inferiore glabra apice minute bifido setam ipsa aequalem gerente ; 
callo nudo. Llano Estacado, and near the Antelope hills of the Canadian Kiver ; September. 
Culms (including the panicle) about a foot high, densely caespitose, erect. Leaves mostly in 
radical tufts, more or less tortuous. Panicle 5-6 inches long, pyramidal; the branches capillary 
and widely spreading, alternate, or sometimes opposite. Spikelets lanceolate, mostly 
purplish. Glumes acute. Inferior palea 3-nerved, slightly 2-toothed at the apex, with a 
straight awn about the length of the valve, between the teeth of which it is inserted. Superior 
palea not bicarinate, but rounded on the back. Caryopsis very slender and acute, nearly the 
length of the palea. 
Gymnopgon racemosus, Beauv. Agrost. p. 41, t. 9, /. 5. Anthopogon lepturoides, Nutt. Gen. 
l,p. 82. Prairies, on Pecan creek, Indian Territory. 
Chloris alba, Presl; KuntJi , Enum. 1 , p. 264. Var. aristulata : aristis valvulae vix dimidio 
longioribus. C. alba, Bentli. Bot. Sulph. p. 56 ; Torr. in Emory's Bep. p. 152. Banks of the 
Upper Rio Grande; October. This is the same as No. 395 of Drummond’s 2d Texan collection. 
The awns are commonly less than half the length of the valves. 
Bouteloua eriopoda, Torr. in Emory’s Rep. p. 154, (sub Chondrosium.) Pyramid mountain, 
near Laguna Colorado, and in deep ravines on the Llano Estacado ; September. 
Bouteloua oligostachya, Torr.; Gray Man. Bot. ed. 2,p. 553. Atkeropogon oligostachyum, 
Nutt. Gen. 1 ,p. 18. Prairies on the Canadian ; August. 
Bouteloua hirsuta, Lagasca Elenclt. p. 5. Chondrosium hirtum, H.B.K. ; Kunth, Enum. 
1, p. 216. Atheropogon papillosus, Engelm. High sandy prairies, Upper Cross Timbers of 
the Canadian ; September. 
Pappophorum boreale, Ledeb.; Steud. Gram. p. 200. P. phleoides. Turcz. Llano Estacado, 
in deep ravines. This agrees so well with the authentic specimen of P. phleoides received from 
Fischer that we can hardly regard it as even a variety. It is not uncommon in New Mexico. 
Leptociiloa mucronata, Kunth , Enum. 1, p. 210. Eleusine mucronata, Michx. FI. 1, p. 65. 
Banks of Boggy creek, Indian Territory ; August. 
Leptochloa fascicularis, Gray , Man. ed. 2, p. 550. L.P polystachya, Kunth , Enum. 1, p. 
270. Diplachne fascicularis, Torr. Ft. N. York, 2. p. 472. Festuca fasciculatea, Lam. Sandy 
banks of the Canadian River ; August. 
Aira elongata, Ebook. FI. Bor. Bor.-Amer. 2, p. 253, t. 138. Plains and hill-sides, Mark 
West’s creek, April 30 ; Napa Valley, May 5, (a small form.) This is hardly a true Aira. 
The spikelets are commonly 2-flowered, with a plumose stipitate terminal rudiment. The 
upper perfect flower is distant from the lower one, on a hairy rachis. Glumes equal, subulate- 
pointed, obscurely 3-nerved. Palern bearded at the base ; the inferior one unequally 5-toothed 
at the summit, awned below the middle ; the awn twice the length of the palea, and somewhat 
