30 
^ers. The genus has but the one species, which extends southward 
into Peru. 
63. *Triodia miitica. Tricuspis muttca, Terr., Bot. Whipple, 
p. 156 ; Porter and Coulter, Syn. Flor. Colorado, p. i48.=No. 2,046, 
C. Wright, N. Mex., 1851-2. 
No locality given for Mr. Pringle's specimens. 
64. Triodia piilchclla, HBK., Nov. Gen. i., 155, t. 47 ; Tricuspis 
pulchella, Torr., Pac. R. R. Surv., iv., 156 ; Thurber, Bot. Cal., ii., 
p. 301. 
d^. DiPLACHNE visciDA, n. j/.— Similar in habit and inflores- 
D. fascicularis 
(( 
covered 
with acrid viscid glands." Panicles from one to three inches long, 
sessile in the axils of the leaves, and mostly enclosed by the inflated 
sheaths, densely flowered, the erect or ascending branches rarely 
exceeding an inch in length. Spikelets about 2 lines long, nearly 
sessile, 4-6-flowered. Outer glumes lanceolate, acute, the lower a 
line long, the upper a little longer and larger. The first flowering- 
glume about x\ lin. long, shortly ciliate below on the central and 
lateral nerves, scabrous above, two-lobed at the tip, lobes rounded- 
obtuse, the central nerve produced between them into a scabrous 
awn one-halt a line long. Spikelets often reddish or purplish, as 
well as tlie culm and leaves. 
Santa Cruz Valley, near Tucson, Arizona. June 28th, i88r. 
This grass may have been introduced from Mexico or from re- 
gions farther south, since, as Mr. Pringle states, it grows in valleys 
which are inhabited. Mr. Pringle is inclined to the opinion, how- 
ever, that it is indigenous to the region where he gathered it. It is 
not iuiprobable that it has already been described in works not 
accessible, treating of more Southern plants. 
66. Diplachne dubia. Leptochloa dubia, Nees in Mart. Brazil, ii., 
p. 433 ; Chapman in Flor. So. States, p. 559. 
Fuller's Ranch, Arizona. July. 
67. * Diplachne imbricata. Leptochloa imbricata,^\\\\x\>tx Gram, 
Mexican Bound, ined.; Bot. Calif., ii., p. 293. 
Santa Cruz Valley, near Tucson. July. 
This is the same as No. 404 of E. Palmer's Coll., 1875. 
68. Ealonia obtusata. Gray, in Manual, 5th ed., p. 626. 
Near Tucson, Arizona. 
69. *Eragrostis Furshii, Bernh., var. delicatida, Munro. E dif- 
fusa, Buckley, in Proc. Phil. Acad.. 1862. n ht 
Santa Cruz Valley, near Tucson. 
diffi 
70. Eragroshs pili/cra, Scheele. Steudel, Syn. Glum p 278 
Santa Catalina Mts., Arizona. April. 
This grass has been proposed as a variety of E. pectinacea Gray, 
some forms of which it resembles in habit and inflorescence, but the 
spikelets are narrow and less flattened, and the lateral nerves of the 
more obtuse flowering-glume are obsolete. 
_ 71. /J/f//V<? arw/a/«, Thurber. in Bolander's revision of the Mel- 
iceae, in Proc. Calif. Acad. Sci., iv., part 2, p. 102 ; Bot. Calif , ii., 
P- 305. 
Mt. Shasta, Cal., alt. 6,000 feet. August. 
