555 



C. GLOMEBATUS E. A 1:384 as mari- 



timus. 



C. GinHMOSUS E. Z 2:20, 193. 



The pitahaya agria, or cord-wood 

 cactus, of Lower California, is noted 

 for its large, bright, scarlet fruit, pos- 

 sessing a delicious flavor, pleasantly 

 acid, like a strawberry, the pulp the 

 color of a ripe watermelon, with the 

 small black seeds scattered throughout. 

 The flowers are 4 to 5 inches long, pur- 

 ple, and quite handsome. The stems 

 are 4 to 10 feet high, 3 to 5 inches in 

 diameter, armed with stout angular, 

 blackish spines. 

 CEREUS HOLLIANUS Weber. 



"Branching from base, 4-5 m high and 

 stout, dark-green; ribs 10-12, acute, often 

 oblique, with areolae 2-3 cm apart; radial 

 spines about 12, irregular, 1-1.5 cm long; 

 centrals 3, the lower one 5-10 cm long and 

 deflexed; flowers near the summit, white, 

 10 cm long; fruit 'as large as a goose 

 egg', dark purplish-red, bearing wool and 

 STxines. Type Weber specimens in hb Mo 

 bo't gard. Common about Tehuacan, Pue- 

 bla. Important for its wood, which forms 

 long, straight rods used for poles in 

 hedges and vineyards." Coulter, Cont Na 

 hb 3:413. 

 C&JIETJS HONDTJRENSIS. 



A night-blooming scandent branched 

 plant allied to Cereus Kunthlanus. 

 Branches usually 10-ribbed, about 1 

 inch in diameter: spines 7-9, short, slen- 

 der, white or reddish-brown: flowers 

 about 8 inches long, fragrant: ovary 

 and tube scaly and woolly: outer per- 

 ianth-segments yellow to chestnut- 

 colored, inner white. Honduras (MfK 

 1904, 147). 



CEPEUS MARGINATUS DC. 



"Stem simple or branching at apex, 

 erect, dark green, 5-7.5 cm in diameter, 

 *'ibp 5-7. obtusf. with acute r. erv^ls, 

 v.Tcliy through the .vholc- length on ac- 

 crtmt of the confluent areoi.ie; spines 7-9, 

 short (4-6 mm) and conical, r'gid, grayish 

 < younger ones purplish- black, the central 

 pcaicely distinct from the rest"*; flower 

 Mownish purple, slender-tubular, -5 cm 

 long; fruit globular .and spiny. Type un- 

 Irr-own. From San Luis Pctosi sou.hv. est 

 throughout Mexico. The stem is often 

 covered with a woody crust, and the 

 woolly confluent areolae are often double. 

 Jt is said to be frequent! v useu for hedg- 

 es in southern Mexico.'' Coulter, Cont Na 

 hb 3:399. Cereus gemmatus Zucc ex Pfr 

 Snum 96. 



C. MAJfclTIMTTS Jones. A 1:384 fdr. 

 <\ MojaTensis Engelmann and Bige- 

 )ow, Pacific railroad reports 4:33, 36, 

 t. 4. fig. 8. In the mountain canyons 

 opening into the Mohave desert, in 

 California, occurs one of the handsom- 

 est species of cactus rarely seen ex-' 

 by some lone prospector who may 

 its almost inaccessible home. It 



556 



forms dense hemispherical masses 2-3 

 feet in diameter, composed often of 

 one to several hundred oval heads 2-6 

 inches high, and 1.5-2 in diameter: the 

 areolae are % inch in diameter, half 

 an inch or more apart: the long and 

 bulbous slender spines are curved and 

 interlocked, almost hiding the bright 

 apple-green body of the plant: upper 

 and lower radial spines 9-15 lines Icug, 

 the uppermost one wanting or weaker 

 than the rest; lateral spines 1-2 inches 

 long, ashy-red when young; central 

 more angled, 1.5-2.5 inches long and 

 dusky, all ashy-gray in age: flowers 

 red, as in C. polyacanthus, from which 

 it is scarcely specifically distinct, 

 though of different aspect. (20-500) 

 C. nycticalns Link, Verh. Preuss. Ver. 

 Gartenb. 1834, 373, t. 4. Suberect, 

 climbing, cylindric or 4-6 ribbed, long- 

 jointed; flowers odorless, white, night- 

 blooming. Mexico. (5-20) 

 CEREUS OCAMPONIS Salm-Dyck. 

 Climbing over trees, fences or houses; 

 joints 3- to commonly 4-sided, 1 or 2 fco 8 

 feet long, young growth even-ribbed; are- 

 olae 1-1% inches apart, tomentose, com- 

 monly 7 radials and 1 central spines; ra- 

 clials rarely over 1 mm. central rarely 6 

 mm long, stout, straight or slightly 

 curved. Stems diark green, 3 inches 

 thick, the ribs scarcely an eighth inch 

 thick, strongly orenulate, bearing the 

 areolae at the summit. Flower white, 

 style 7 inches long: stigmata 14, slender, 

 white, nearly % inch long; ovary globose, 

 an inch in diameter, covered with about 

 10 tubercles surmounted with minute 

 scales (the tomentose axils commonly 

 bearing 2 white spines); tube of corolla 

 5 inches long, bearing 15 or more similar 

 scales with tomentose and spiny axils; 

 filaments and large anthers apparently 

 white (Jin dried flower), petals narrow, 

 acuminate, l 1 /^ inches long, extending 

 three-fourths inch beyond the filaments. 

 Nopal e, or Nopalita de Cruz, of the In- 

 dians; 15-20 feet high; cultivated in gar- 

 dens for its fruit (|?). States of Puebla 

 and Oaxaca, Mexico (lOrcutt 2709). 

 CEREUS ORCUTTII K Br. 



"Stems erect, branching, bright green, 

 reaching a height of 6 m and a diameter 

 of 16 cm, with hard woody center; ribs 

 14-1S, about 1 cm high; areolae round, 

 about 6 mm in diameter and about half 

 that distance apart, densely covered with 

 short, light gray wool; spines all slender, 

 spreading, yellowish brown, irregularly 

 3-seriate; radials 12-20. about 12 mm long, 

 deficient above; intermediates about 10, 

 one^third to more than twice longer, less 

 spreading, one of the upper spines of this 

 row usually stouter and darker, porrect, 

 often reaching a length of 7 cm; centrals 

 about 5, porrect-spreading a little longer 

 than the intermediates; flowers greenish 

 brown, darker outside, diurnal, about 4 



