

114 BOTANY OF THE DEATH VALLEY EXPEDITION. 



specimens, yot their identity with the true 0. parryi, as may be seen from the above 

 quotation, is still uncertain. It is very desirable that good specimens be again col- 

 lected near San Felipe, and a. careful comparison of the two plants made. 



This cactus was found in the upper part of the Lower Sonoran zone, on the western 

 slope of the Charleston Mountains (Xo. 381) ; on the eastern slope of the same range 

 between Mountain Springs Pass and Cottonwood Springs; and on the eastern slope 

 of the divide between Towner's and Ash Meadows (Xo. 430). 



Opnntia pulchella Engelm. Trans. St. Louis Acad. ii. 201 (1863). Type locality, 

 "sandy deserts on Walker River, Nevada." 

 Fish Lake Valley, Nevada (No. 2009). 



Opnntia ramosissima Engelm. Amer. Journ. Sci. ser. 2. xiv. 339 (1852). Typo 

 locality, "gravelly soil near the Colorado, and in the desert." 



Dr. Engelmann subsequently changed the name of this species to 0. tessellata, 

 the designation under which it is currently known. 



This cactus was seen occasionally from Hesperia(No. 131) to a point about 25 kilo- 

 meters north of Daggett. It occurred again on the western foot-slope of the Charles- 

 ton Mountains, between Yount's ranch and Mountain Springs Pass, between Cotton- 

 wood Springs and Vegas Ranch, in the northern part of Vegas Valley, and on both 

 slopes of the divide northwest of Towner's (No. 431). Dr. Merriam reported it on the 

 Timpahute and Desert Mountains of Nevada; in the valley of the Virgin River, near 

 Buukerville, Nevada; and near the mouth of Beaverdam Creek, Arizona. 



Opuntia rutila Nutt. in Torr. & Gr. Fl. i. 555 (1840). Type locality, "arid clay 

 hills in the Rocky Mountain range, near the Colorado of the West, about lat. 42°," 

 afterward given more specifically by Engelmann l " near the Green River in Southern 

 Wyoming." 



Nos. 1939 and 1941 have red flowers and, with Xo. 498, long, reflexed, flexuous, white 

 spines, and linear-oblong to elliptical joints. Nos. 1989 and 2013 have yellow flowers, 

 orbicular joints, and slender, divergent spines seldom exceeding 6 cm, long, and 

 scarcely flexuous. No. 927 has joints of similar form and yellow flowers, but the 

 flexuous spines of the numbers first mentioned. No. 787 is without flowers, but is 

 intermediate between the two forms described, having the rounded joints of one and 

 the flexnouB spines of the other. The spines of the latter resemble the hog bristles 

 used by shoemakers, and are commonly 6 to 8 cm. long. One was measured which 

 had attained a length of 19.7 cm. Probably more than one species is included in this 

 collection of numbers, but it is impossible at present to distinguish them clearly. 

 The specimens with orbicular joints and shorter spines may belong to the doubtful 

 O. hintricina Engelm. & Bigel. 



It was collected near Willow Creek, Panamint Mountains (Xo. 787); near Crystal 

 Spring, Coso Mountains (Xo. 927); in the Beaverdam Mountains, Utah (Xo. 1939); 

 near St. Joe, Nevada (Xo. 1941); at St. George, Utah (Xo. 1959); at Quartz Spring, 

 Nevada (No. 1989); and in the White Mountains, California (Nos. 2013, 2014) 



Opuntia whipplei Engelm. & Bigel. Pac. R. Rep. iv. 50 (1856). Type locality, 

 "fromtho elevated country about Zuni to tho head of Williams's river." 



Our specimens agree in their characters with the typical form of this species, 

 which is a plant of smaller stature and more northerly range than the variety 

 spinosior of southern Arizona. Dr. Merriam and Mr. Bailey found the plant along 

 the Upper Santa Clara River, Utah (Nos. 1979, 1980), and on the Highland and Juni- 

 per (No. 1991) ranges of Nevada. 



FICOIDEiE. 



Sesuvium portulacastrum L. Sp. PL i. 446 (1753), under Portnlaca; L. Sp. PL 

 ed. 2. i. 684 (1762). Type locality, "in Curassao," West Indies. 

 Near Keeler (Xo. 872). 



!Bot. King Surv. 119 (1871). 



