[7 ] , 158 



ceived from Dr. Wislizenus and from Dr. Gregg, from the neighborhood of Chihuahua, and 

 which I have described in Dr. W.'s report by the name of C. Greggii, erect, branching, with 

 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 unknown 

 to me. Provided The drawing is correct, we have here a smooth oval accuminate fruit, 

 crowned with the remains of the corolla, and supported by a distinct stipe of a bright crim- 

 son color. A stipe, as well as such an acumination, I have not seen in any other Iruit of a 

 cactus. Fruit, with the long acumination, 2| inches long, | to 1 inch in diameter, stipe about 

 — inch lone. 

 * 7. Opuntia. 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, 8—10 inches high; joints orbicular obovate, rounded, 

 obtuse or sometimes acutish, of a bluish green color, H to 2\ inches long, and little less 

 wide- spines short and whitish; berries obovate, scarlet, only about 3 or 4 lines long. It the 

 figure represents the natural size, this species ought to bear the name 0. microcarpa. 

 °8. Opuntia. October 28, 1816; 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 1— \\ wide; fruit about 3 lines long. . , , , 



The«-e are several opuntiae 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. 



YVol(lC(l(£ t 



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 like the smooth fruit of a Mam- 

 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, tuberculated, 4—6 inches long; 1—1 J inches in 

 diameter; tubercles very prominent, with about 8 long (1— H inches,) straight spines; fruit 

 obovate, umbilicate, scarlet, towards the lop of the branches, about 9 lines long, and 6 in 



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. 



Stem erect with verticilate horizontal, or somewhat pendulous branches; branches cylin- 

 drical strongly tuberculated, about 8 lines in diameter, with short spines on the tubercles; 

 fruit pale yellow, clavate, tuberculate, umbilicate, 1 to 1{ inches long, 6— 8 lines in dia- 



This is probably the Opuntia arborescent, Engelm. in Wisliz's report, though the spines 

 are represented as being shorter than in my specimens of 0. arborescent 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 opposite nor verticillate,) form- 

 ing with the stem an acute angle, sub-erect, tubercles more prominent, areolae whitish at 

 their lower edge, with 3 dusky defiexed spines; Iruit clavate, tuberculate, pale yellow, 1 inch 

 long, 4 lines in diameter. 



I believe this to be an undescribed species, and would propose the name lor it ot U. Call- 



VZ^Opuntia. October 10, 1846; abundant. Three feet high, with spreading branches; 

 the same in circumference. . . «, 



I can see no difference between this figure and a plant which I have received lrom Ji,l 

 Passo, by Dr. Wislizenus. and which I have described in his report under the name of 0. 



vazinata. .',„,,.. ■ ■ , u 



Nos. 13—15 are no Cacti. In 13, I recognize the Raberhnia zuccarim, a shrub common 

 in the chaparals of northern Mexico, which has been collected in flower about Parras and 

 Saltillo by Drs. Wislizenus and Gresg. The fruit is unknown so far; the specimen figured 

 is however, in fruit; the beny (?) is globose, f— 1 line in diameter, crowned with the rudi- 

 ment of the style. It was collected October 23d, 1846, and is described as a shrub 3 feet 

 hioh ; with low, spreading boughs. 



14. Collected November 15, 1846; 4 feet high, rare. 



Is perhaps, another species of the same genus, but the entire absence of flower or Iruit 

 makes it impossible to decide. Branches similar, straight, leafless, ending m robust dark 

 spines- but much elongated and sub-erect, not horizontal, as in No. 13. 



15. Is entirely unknown to me. Perhaps it is an amaryllidaceout plant; the fruit is said 

 to be 5 inches long. 



A gigantic cactus was observed along the Gila river, about the middle part ol its course, 



