42 



California Art & Nature 



43 



CACTACEAE. 



Many people who have been acquaint- 

 ed only with the prickly pear and the 

 cholla cactus of the plains — perhaps 

 to the detriment of their epidermis, w:il 

 be surprised to learn that over one 

 thousand valid species exist, to which 

 more than three thousand names have 

 been applied by botanists and horti- 

 culturists. 



Genhs ANHALONIUM Leiuaire. 



ANHALONIUM PISSURATUM E. 



Anhalonium Engelmanni Lemaire Cact 

 i?. (1J6S). 



Living Rjck, found in Texas and Mexico. 

 "Upper and exposed part of tubercle trian- 

 gular in outline, convex, carinate and alTnost 

 smooth below, convex and variousJy Assured 

 and thereby verrucosa above, sharp and cre- 

 nate on the edges." — Engelmann. 



Genus ASTROPHY'IX'M Lenmlre. 



ASTROPHYTUM MYRIOSTIGMA Lem. 

 The Bishop's Hood; an odd and teauLi- 

 ful spineless pant from Mexico, r sem- 

 biing a pie:e cf carved stone. 



GeuaM CERELS Haworth. 



CEREUS AL.AM03ENSIS Coulter. 



Slna borbona of Sonora; 2-8 feet high, 2- 

 10 branches from the base with joints 1-1 

 feet long, flexuous or cecumbint, often 

 forming arches and rooting at the joints, 

 and thus spreadi: g over wic;e areas, some- 

 times ICO feet in diameter or more; ribs 

 about 7, slight'.y tuberculated. The bright 

 red fowers slightly resemble tho e of C. 

 f agelliformis. 



CEREUS BERLANDIERI E. 



Stems lV^-6 inches long, an Inch thick, 

 bearing sweet-s en'ed purple flowers 2-4 

 inches in diameter; a native of southern 

 Texas and Mexico. 

 CEREUS COLUBRINUS Ot'.o. 



An eiect growing Cuban plant, night- 

 blooming, U.e fragrant white flowers b 

 inches across. 



CEREUS DASYACANTHUS E. 



Plant 5-12 inches high, densely covered 

 with numberless delicately colored spines, 

 and bearing large ^owy orange yellow 

 flowers. El Paso, Texas, and Mexico. 



CEREUS EMORYI E. 



San Diego's Velvet Cactus. This is one 

 of the best-known of California .;acti, the 

 slender, thickly-set yellowish spines giving it 

 a peculiarly beautiful appearance. The spines 



on the young joints are shorter, soft and flexu- 

 ous; the flowers are yellowish, followed by a 

 small edible fruit. 



CEEBUS PENDLERI E. 



A queer irregular caespito~e plant of 

 Arizona, New Mexico and Sonora, rarely 

 mere than 12 heads in a cluster, stems 3-4 

 inches in diameter and about 6 inches 

 high, distinguished by the one usually 

 black central Sijine. which often curves 

 vpward. Flowers n:ajenta colored. 



CEREUS GIGANTEUS Engelm. 



The 'Suwarro' or giant cactus of Arizo- 

 na and Sonora, 25-66 feet high, 1-2 in dl- 

 amtte", thickest about the lower third 

 Vvheie gensrally the 2 or 3 alternate or 

 sometimes opposite branches start, and 

 from thence sllght'y taper toward the 

 summit. Stems and branches marked by 

 superficial transverse furrows, indicating, 

 as it seems, the annual periods of growth, 

 forming rings of 4-8 Inches in hight. 

 Branches ur.ejual, and always of less 

 hight than the main stem, mostly 5-6 feet 

 lorg, with 12-18 ribs. 



CEREUS GREGGII Engelm. 



Gregg's night blooming cactus occurs 

 in the arid regions of Southern Ari- 

 zona, New Mexico, Texas, Chihuahua 

 and Sonora, and is notable for its large 

 tuberous root and slender inconspic- 

 uous stems, 1 to 3 or 4 feet high, a half 

 inch in dia:ii«_ier. Flower 6 inches long, 

 2 inches in diameter, with pale, purple 

 petals, followed by tlie smooth, oval, 

 acuminate, scarlet fruit, succulent, 

 crowned with the remains of the cor- 

 olla, and suported by a distinct stipe of 

 a bright crimson. 



CEREUS PRINGLE* S. Watson. 



The Card-on is the giant cactus of 

 Lower California and Sonora, where it 

 forms forests, attaining a height of 20 

 to 35 feet. The ribs are usually 13, and 

 it differs from the giant cactus of Ari- 

 zona (Cereus giganteus) in that the 

 spine bearing areolae on the ribs are 

 connected by wooly grooves. The trunk 

 is often 3 to 4 feet in diameter; the 

 older portions of the branches usually 

 quite thornless. The dead wood is used 

 for fuel, but otherwise this mammoth 

 production of the desert seems to be 

 without use. 



CEREUS PACIFICUS E. 



Cereus phoeniceus var. pacificus En- 

 gelm, MS. 



