222 UNITED STATES AND MEXICAN BOUNDARY 



Y. baccata, but the fruit is longer, though not greater in diameter, and the pulp is thicker. It 



( 



We 



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 i^s 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 



terminating 



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 



may 



yucca found by Dr. Bigelow. Mr. Schott, in his notes, states that on the upper Rio Grande 

 he saw a yucca, bearing edible fruits, with a stem 18 incbes 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 collectionSj which I have not been able to determine satisfactorily 



for want of sufficient materials. 



Mr 



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, 



more 



and the scape 2-3 feet. The leaves are 18 inches or 



I— I 



side, rounded or obtusely angular uuderneathj and slightly serrulate-scabrous on the margin ; 



the apex convolute and spiniferous. The flowerg 

 panicle. Capsule coriaceous, obovate, and some 



(as represented in a sketch) 



a quarter 



long and of nearly the same breadth. Seeds semiorbicular, thin and flat. If it prove to be a 



hipplei. The late Dr. Gregsr found between Parras and 



distinct species it may be called Y. Whipplei. 



Cerralbo a yucca between 20 and 30 feet in height ; but his specimens are too imperfect for 



comparison 



MELANTHACE^. 



Bot. Whippl 



Fields around San Diego^ Ca li 



fornia ; Parry. 



Xerophyllum tenax, Nuit. Gen. 1, p. 235, Gray^ Melanth. in Ann. Lye. N, Yorky 4, p. 129. 

 Helonias tenax^ PursJi^ Fl. 1^^. 243, p. 9. Dry hills near the seacoast, Monterey^ California, 



May ; Parry. 



ScHCENOCAULON Deummondii, (rra?/, tTi -Boi ^eecA. ^. 388, acZu. S, Texanum, iS'c^ee^e tn iwncea, 

 25, jp. 262. Near Yorktown, on the Lower Rio Grande, Texas, April — October; ScJiott. This 

 species was first discovered by Drummond, and is No. 284 of his third Texan collection. It was 

 afterwards found by Dr. Kiddell and Mr. Lindheimer. The filaments are di\a,ted upivard and 

 not downward, as stated bv Scheele 1. c. 



JUNCACEiE. 



JuNCUS Balticus, Willd. in Berl. Mag. 1809, p. 298, ex KuntJi, Enum 



New 



DEBILIS 



Wright. 

 ""orr. Fl 



N, York, 2, p. 328. Wet places along the Limpio, July ; Bigeloio. Arroyo de los Janos, 



Sonora; Schott. (No. 1925, Wright.) 



JuNGUs xiPHOiDES, G. A. Meg. in Eeliq. EaenJc. 2, p, 143, ex Kunth, Enum. 3, p. 331. Near 

 Monterey, California, May; Parry. Very near J. Menziesii^^. Californicus, Hook. & Am. Bot. 

 Beech, p. 402. 



i 



