[7]                              158
ceived from Dr. Wislizenus and from Dr. Gregg, from the neighborhood of Chihuahua, tog "which I have described in Dr. W.'s report by the name of C. Greggii, erect, branching, wg^\ 5 compressed ribs, dark green, with whitish areolae, and about 8 short dusky spines.
The specimen figured here is very remarkable on account of the fruit, which was uukijovn to me. Provided the drawing is correct, we have here a smooth oval accuminate frail crowned with the remains of the corolla, and supported by a distinct stipe of "a bright crim! son color. A stipe, as wrell as such an acumination, I have not seen in any other fruit of a cactus. Fruit, with the long acumination, 2i inches long, J to 1 inch in diameter, stipe about i inch long.
7.  Opunlia.    Very abundant on the Del Norte and Gila.
No date nor statement whether the figure represents the natural size or is smaller. The species belongs to the section elliptic^ of Salm; it is ascending, older stems prostrate, branches and younger joints erect, 810 inches high; joints orbicular obovate, rounded, obtuse or sometimes acutish, of a bluish green color, H to 2{ inches lona, and little less wide; spines short and whitish; berries obovate, scarlet, only about 3 or 4 lines long. If the. figure represents the natural size, this species ought to bear the name 0. microcarpa.
8.  Opuntia.    October 28, 18-16; common on the Gila.
Much branched, sub-erect, joints obovate, often acutish, purplish, with two or three longer brown spines directed downwards; fruits obovate, red. In the figure, the joints are 1|2 inches long, and 11| wide; fruit about 3 lines long.
There are several optimise known with purple colored joints, but none in the least resemb. ling this, and I must consider it as a distinct species to which I would give the name of 0. violacea.
9.  Opuntia?    October 22, 1846; abundant on the Del Norte and Gila.
A remarkable plant, apparently more like a Mammillaria than like an Opuntia, The fruit is also represented without areolae or tubercles, exactly Jike the smooth fruit of aifai. millaria; but this may be an oversight in the artist. The habit of the plant suggests the belief that it is an opuntia of the section cylindracea.
Joints or branches ascending, cylindrical, tuberculatcd, 46 inches long; 11^ inches in diameter; tubercles very prominent, with about 8 long (11^ inches,) straight spines; fruit obovate, umbilicate, scarlet, towards the top of the branches, about 9 lines long, and 6 in diameter.
It is a distinct species, which I am gratified to dedicate to the skilful artist who has drawn all these figures, Mr. J. M. Stanly; I therefore propose for it the name Opuntia Stanlyi
10.  Opuntia.    November 3, 1816; 4 feet high.
dr
fruit ] meter.
This is probably the Opuntia arborcscens, Engelm. in Wisliz's report, though the spines are represented as being shorter than in my specimens of 0. arborescens from New Mexico and Chihuahua.
11.  Opuntia.    November 2, 1846.
Somewhat resembling the last, but forming " low, wide spreading bushes." Joints more slender, only about 4 or 5 lines in diameter, alternating (not oppofeite nor vertieillate,) forming with the stem an acute angle, sub-erect, tubercles more prominent, areolee whitish at their lower edge, with 3 dusky deflexed spices; lruit clavate, tubereulatc, pale yellow, 1 inch long, 4 lines in diameter.
1 believe this to be an undescribed specics/ and would propose ihe name for it of 0. Cali-fornica.
12.  Opuntia.    October 10, 1846; abundant.    Three feet high, with spreading branches; the same in circumference.
I can seo no diflerence between this figure and a plant which I have received from El Passo, by Dr. Wis'izenus, and which I have described in his report under the name of 0. vaginata.
Nos. 1315 are no Cacti. In 13, I recognize the Kaberlinia zuccarini, a shrub common in the chaparals of northern Mexico, which hns been collected in flower about Parras and Saltillo, by Drs. Wislizenus and Gregg. The frait is unknown so far; the specimen figured lSj however, in frail; the beny (?) is globose, f1 line in diameter, crowned with the rudiment of the style. It was collected October 23d, 1846, and is described as a shrub 3 feet high, with lovr, spreading bonchs.
14.  Collected November 15*' 1840; 4 feet hih, rare.
Is, perhaps, another species of the same Cnus, but the entire absence of flower or fruit makes it impossible to decide. Branches similar, straight, leafless, ending in robust dark spines; but much elongated and sub-erect, not horizontal, as in No. 13.
15.  Is entheiy unknown to me.    Perhaps it is  an  amuryllidaceous plant; the fruit is said to be 5 inches long.
A gigantic cactus was observed along the Gila river, about the middle part of its course,