232 UNITED STATES AND MEXICAN BOUNDARY. 
Y. baccata, but the fruit is longer, though not greater in diameter, and the pulp is thicker. It 
may, till better known, be regarded as a variety (macrocarpa) of that species. We have from 
Mr. Thurber the leaves and a portion of the fruit of a yucca which he collected near Parras, in 
Cohahuila, where it covers the table lands. It is a tree sometimes twenty-five feet or more in 
height, with several spreading branches. The leaves are about 15 inches long, and from an inch 
to an inch and a half wide, flat, terminating in a spiny point, and the margin filamentous. The 
fruit is two or three inches long, and has a thin sweet pulp. The seeds are thick and black. 
A figure of the plant is given in Bartlett's narrative, vol. 2, p. 491. Our specimens are hardly 
sufficient for determining whether it is a described species. It may not be distinct from the 
yucca found by Dr. Bigelow. Mr. Schott, in his notes, states that on the upper Rio Grande 
Һе saw a yucca, bearing edible fruits, with a stem 18 inches in diameter. The trunks have been 
used in Mexico as palisades in the construction of stockades. Besides the above species, there 
are two or three others in the collections, which I have not been able to determine satisfactorily 
for want of sufficient materials. One is a yucca found by Mr. Schott on rocks near San Pasqual, 
southern California. It is the same that is doubtfully referred to Y. aloifolia in the Botany of 
Whipple’s Report, (excluding the synon. and No. 1909, Wright.) The caudex is 1-2 feet high, 
and the scape 2-3 feet. The leaves are 18 inches or more in length, channelled on the upper 
side, rounded or obtusely angular underneath, and slightly serrulate-scabrous on the margin; 
the apex convolute and spiniferous. The flowers (as represented in a sketch) are in a spreading 
panicle. Capsule coriaceous, obovate, and somewhat truncate, 3-lobed, an inch and a quarter 
long and of nearly the same breadth. Seeds semiorbicular, thin and flat. If it prove to be a 
distinct species it may be called Y. Whipplei. The late Dr. Gregg found between Parras and 
Cerralbo a yucca between 20 and 30 feet in height; but his specimens are too imperfect for 
comparison. 
МЕГАХТНАСЕЛ, 
ANTICLEA Fremonti, Torr. in Bot. Whippl. Report, р. 144. Fields around San Diego, Ca li 
fornia; Parry. 
XEROPHYLLUM TENAX, Nutt. Gen. 1, p. 235, Gray, Melanth. in Ann. Lyc. N. York, 4, p.-129. 
Helonias tenax, Pursh, Fl. 1, p. 243, p. 9. Dry hills near the seacoast, Monterey, California, 
Мау; Parry. | 
SCHENOCAULON Ювиммохрп, Gray, m Bot Beech. р. 388, adn. S. TEXANUM, Scheele in Linnea, 
25, р. 262. Меат Yorktown, on the Lower Rio Grande, Texas, April—October ; Schott. This 
species was first discovered by Drummond, and is No. 284 of his third Texan collection. It was 
afterwards found by Dr. Riddell and Mr. Lindheimer. The filaments are dilated upward and 
not downward, as stated bv Scheele 1. o. 
JUNCACEZA. 
Juncus Bavricus, Willd. in Berl. Mag. 1809, р. 298, ex Kunth, Enum. 3, p. 316. Sandy moist 
places, western Texas, New Mexico, Sonora and California, June ; (No. 1920 and 1921, Wright.) 
Juncus DEBILIS, Gray, Manual, ed 2, p. 480. J. polycephalus, var. ? depauperatus, Torr. Fl. 
N. York. 2, p. 328. Wet places along the Limpio, July; Bigelow. Arroyo de los Janos, 
Sonora; Schott. (No. 1925, Wright.) 2 
Juncus XiPHOIDES, С. A. Meg. in Relig. Haenk. 2, p. 143, ex Kunth, Enum. 3, p. 331. Меат 
| Monterey, California, May; Parry. Very near J. Menziesii 2. Californicus, Hook. & Arn. Bot. 
Beech, p. 402. 
