124 CEREUS GIGANTEUS 
San Diego, on arid hills and in dry creek beds. Plant 3-8 feet high, forming impenetrable thickets. Near 
O. arborescens of New Mexico ; but the red flowers smaller, the berry spinous, etc. 
9. O. SERPENTINA, n. sp.: procumbens ; articulis cylindricis elongatis tuberculatis; aculeis 7-9 vaginatis ; bacca 
sicca hemispherica aculeatissima. 
Dry hillsides, San Diego. 
10. O. RAMOSISSIMA, n. sp.: caule erecto ligneo divaricato-ramosissimo ; articulis gracilibus ae [339 (5)] 
dricis tuberculatis cesiis ; aculeis subsolitariis saccato-vaginatis ; bacca sicca tuberculata setosa et aculea 
Gravelly soil near the Colorado, and in the desert. Plant 2 feet high ; the joints 4 inch in pic prero 
the Opuntia cylindracee graciliores. 
11. ParRYI, n. sp-: caule prostrato; articulis adscendentibus tuberculatis; setis fuscis ; aculeis brevibus 
albidis, singulo longiore deflexo; bacca subglobosa setoso-aculeata, 
Eastern slope of the California Mountains, near San Felipe. Joints 4 to 8 inches long ; the longest spines 4 inch 
long. Flower 13 inch in diameter, yellowish green. Approaches the Opuntie clavate. 
Mr. Charles Wright, well known to the botanical world by his collections made in the south- 
west, now also attached to the Mexican Boundary Commission, has, under the instruction of 
Colonel Graham, made large and interesting collections of Cacti in western Texas and southern New 
Mexico, and sent them to me for examination. 
It is impossible here to give as full an account of them as would be desirable; but most of them 
are now in cultivation, and will be described hereafter. Most of the Cactaceze discovered by Wisli- 
zenus, Fendler, and Gregg are among them, together with a considerable number of new species. 
I will here only state that my doubts in regard to the fruit of Cereus Greggii, expressed in my 
account of the plant in Emory’s Report, have been entirely dispelled by Mr. Wright. He says that 
the plant is large, much branched, has a very large fleshy root, generally implanted in hard stony 
soil, and the pulpy scarlet fruit is just as figured in Emory’s Report, — stiped at base and attenuated 
above. The seeds he sends are black and opaque, rugose and pitted, about 1 line in diameter. 
They have germinated well with me. This same plant has been sent from Chihuahua to Kew by 
Mr. Potts, and has been described by Prince Salm as Cereus Pottsii, — which name, however, must 
give way to the prior name, C. Greggii. It is every way a very singular plant, and though found 
from western Texas and Chihuahua to El Paso, the copper mines, and the lower Gila, appears to be 
rare everywhere. 
[The following observations, sent in as a substitute for a sentence on p. 339, but received too 
late for insertion at that place, were printed on p. 446 of the same number. — Eps.] 
The curious Cereus Greggii, E., has been noticed from the Pecos River east to the Mimbres 
Mountains west of El Paso, and from Chihuahua towards the mouth of the Gila, but always in 
isolated specimens, very scattering and rare. The fruit which was figured in Emory’s Report is deep 
scarlet, succulent, with short spines on the pulvilli; it is oval, sessile, and attenuated at base, and 
not stipitate, but long acuminate, and with the long tube of the flower curved downwards, remaining 
attached to its point. The seeds are black and opaque, rugose and pitted, and about 1 line in 
diameter. The root is large, turnip-shaped, and produces many stems, 2-4 feet high. The young 
plants raised from seeds are dark purplish, triangular; root not yet enlarged. 
Collections of Cactacez have also been recently made by Dr. John M. Bigelow of the Boundary 
Commission, who has sent them to me for examination. My collection under study includes about 
12 species of Mamillaria, 8 Echinocacti, 12 Cerei, and 12 Opunti, most of which are new forms. 
Sr. Lovts, Sept. 7, 1852. 
