272 BOTANY. 
XEROTIDE ZA. 
DasyLirIon* GRAMINIFOLIUM,t Zuce.—Caudex 4° high; scape 8-10° 
high, 2’ in diameter; leaves 2° long, 6-10” wide, spiny serrated ; spikes of 
the flowering panicle subtended by lanceolate, clasping bracts; perianth 
white or whitish; filaments much exceeding the lobes; embryo cylindrical, 
in the centre of a hard, horny albumen and nearly as long; fruit whitish, 
with a purple tinge, conspicuously 3-winged.—Southern Arizona (329, 655). 
DasyLIRIUM ERUMPENS, Torr—Caudex and scape 6° high; leaves 
linear, 2-3° long, 4-6” wide at base, and regularly tapering to the tip, semi- 
terete below, channelled above, edges rough; fruit 3-lobed, 3-celled, and 
not winged (but appearing so from the diverging cells), broader than long, 
thin, membranous, and burst by the maturing seed; the sheathing bract at 
base of each primary branch attenuate into a long filiform tip—Rocky 
Cafion, Arizona (278). 3 
This my friend Mr. Watson has named Lindheimerianum, but it cor- 
responds so well in its fruit and leaves that I have named it as above. 
J UNCEZL. 
By Dr. GEORGE ENGELMANN., 
Juncus Bauticus, Deth., y. montanus, Kngelm. Revis. June. in Trans. 
Acad. Saint Louis, 2, 442—A smaller inland form of this species, with 
nearly equal segments of the perigon, longer, beaked capsule, and slender, 
pointed seeds—Colorado; New Mexico to Nevada; Rothrock (23). 
Juncus TrigLuMis, Linn.—Czspitose, with short subulate leaves, chan- 
nelled near the base; naked stems 3-5’ high, bearing a terminal head of 2 
or 3 flowers, enclosed in large broad bracts; obtusish sepals shorter than 
the oblong, obtuse, mucronate capsule; filaments many times longer than 
the small anthers; large seeds loosely enveloped in the striated coat, appen- 
* DasyLirion, Zuce.—Flswers dicecious. Male-flowers 2-3 in clusters, enclosed in thin, hyaline, 
somewhat fimbriate bracts; pedicels 1-2” long, jointed above; perianth of 6 similar white or whitish 
divisions; filaments attached to the base of the divisions; pistil abortive. Female flowers in bracteate 
clusters, like the males; ovary sometimes 1-, sometimes 3-celled, with usually 6 ovules, of which but one 
or two mature into seeds.—Erect, hard herbs, with clusters of narrow, recurved leaves crowning the 
caudex. Scape 6-14° high, terminated by large masses of small flowers. The ends of tho leaves usually 
split up into white, thin, strong fibres, which could doubtless be utilized in the manufacture of cordage. 
Dasylirion graminifolium, Zuce. Since the above was put in type, Mr. Watson has determined this 
plant to be a new and clearly distinct species, which he names D. Wheeleri. See note under Table of 
Orders, at end of volume. 
