383 



week before closing; scales of the 

 ovary 45-50, the lower ones minute, 

 the upper sepaloid, brownish, half inch 

 long, nearly one-fourth wide at base; 

 axils of the scales bearing 12-15 or 

 more short white spines imbedded in 

 wool, forming spiny areolae in fruit, 

 easily detached at maturity but not 

 deciduous: sepals 12-15, brownish 

 along- the midvein outside; petals of 

 equal number, magenta color, 2 Inches 

 long-, oblanceolate; stamens many, 

 nearjy an inch long, filaments 

 magenta, stigmata 12, green, at first 

 erect: flowers in May or June, fruit 

 ripeninsr in July, the crimson pulp of 

 o, delicious strawberry flavor: seeds 

 black. (5-20) 

 CEREUS ERUCA Brandegee. 



"Prostrate, very rarely branched, 13-rib- 

 bed, 3-4 fe>et long, 3-4 inches in diameter; 

 rooting from the under side of the older 

 growth, decaying at one end and growing 

 forward at the other, generally in patch- 

 es of 20-30, probably originating from a 

 common center; areolae 4-6 mm in diam- 

 eter, separated about the same distance; 

 spines about 20, stout, ash-colored, less 

 than an inch long, the exterior cylindric- 

 al, the interior stouter, angular, some- 

 what the lower central one much flat- 

 tened, more than an inch long, angular, 

 strongly reflexed. Common on the sand 

 of MagxMlprta island and about San Jorge, 

 Baja California. Its local name Is 'chil- 

 enola.' The manner of growth, with up- 

 lifted heads and prominent reflexed 

 spines, gives the plants a resemblance to 

 huge caterpillars." Brandegee, Cal ac pr 

 fir 2, 2:163, t 7. 



C. gigantens. "Erect, columnar, sim- 

 ple or wfth a few erect branches to- 

 ward the upper partr rfbs 18-21; 

 areolae ovate-orbicular, woolly when 

 young, bearing 12-16 exterior slender 

 spines and 4-6 much stouter inner 

 ones, the former %-!% inches long, 

 the latter 1-2% inches: flowers lateral 

 near the woolly top of the stem and 

 branches, 3-5 inches long and 2 or 3 

 in diameter, open day and night: stig- 

 mata 14-18, slender, greenish-yellow: 

 fruit 2.5 or 3 Inches long, beset with 

 30 or 40 small scales, woolly in their 

 axils, bursting irregularly by 3 or 4 

 valves and dropping the greenish 

 white pulp with its black seeds. Com- 

 mon along the Rio Colorado, on rocky 

 slopes, and eastward through Arizona. 

 The w*oody skeleton consists of long- 

 rods, corresponding to sinuses between 

 the ribs, in younger plants distinct, in 

 older ones connected by a network of 



284 



fibers and forming a hollow cylinder. 

 The luscious fruit is an important 

 article of food to the Indians." ' 

 Engelmann, Botany of California 

 2:450. (20-100) 



The 'Suwarro' or giant cactus of Arizo- 

 na and Sonora, 25-60 feet high, 1-2 In di- 

 ameter, thickest ab&ut the lower third 

 where generally the 2 Or 3 alternate of 

 sometimes opposite branches Start, and 

 from thence slightly UtePT toward the) 

 summit. Stems and branches marked by 

 superficial tr nsverse furrows, indicating, 

 as it seems, the annual periods of growrh, 

 forming rirg^ of 4-8 inches in hlgtit, 

 Branches ur equal, and always of 1- ssJ 

 hight than the main stem, mostly 5-6 feet 

 lor.g, with 12-18 ribs. 



CEREUS MARITIMUS M. B. Jones. 



"Caeapitose, heads 5-20 in a bunch. 

 which is often 2-3 feet in diameter and a 

 foot high; each plant cylindrical, ovate* 

 or in small specimens almost round, IH- 

 4 inches long, three-fourths to f/k wide; 

 principal spines 4, straight, angled and 

 somewhat twisted at base, 1-1% inches 

 long, beneath these are P-10 very short 

 spines whieh are either straight or 

 hooked; spines light brown, except when 

 young, then red at base, spring-ing' from 

 a very short but copious wool; flowers 

 Itght yellow, abottt l*/ 3 inches long and 

 wide; petals oblanc-o-ate or obovate, 

 rounded, margin irregular; ovary obo- 

 vate sessPe Or short stalked, covered 

 with *bunches of white or yellow, often 

 hooked, short spines and crisped wool; 

 fruit not mature. Encenada, Baia Cali- 

 fornia." Jones, Am naturalist 17:973 (J 

 18Hh. 



Cerens g'omeratus et flaviflortis E. C. 

 san^org'anus? C. marftimus Coulter, irt 

 part 



CKRTvUS P-VdFlOTJS "R. 



CAfpfis phoeniceufl var. paclflotis En- 



grim. MS?. 



"P'S-t oe-pito^e. 1-1 f^er*- in rfiprnet^r. 

 fe~- to ~r(\ si'ort ^tenigr (6-0 Inches icmg ana 

 2-2% inches in diameter) in each, forming 

 den?e oval cushions: sterns with 10-1? ob- 

 tuse ribs, shallow Intervals, and an ecmal 

 number of internal ligneous fibers; radial 

 spinFR 1-12 and of an av^rflsre length of 

 one-fourth inch, the 4 c^n'ral spines lar- 

 ger. three-forrths to 1 inch lona:, s'ender, 

 wfrte; f ower an inch across, ichiding the 

 ovary 1U, Inches long, the oblong ppatu- 

 la f e serais bright reo with a broad pur- 

 pl ? h mid voin; ovary and fruft wfth 25-30 

 spiny areolae: fruit, fershv with numerous 

 r.mall repd: stame/ls slender, as long as 7 

 penals; anthers small, red: sty 1 6 thr^e- 

 fonrfhs inch long, stigmata 6-8, greenish." 

 -Or W 2:^6 (Je 18^. 



Tyne locality, near Todos Santos bay, 

 Lower California. 



PAlrMERT 

 "Ft c ms branching, 3 or 4 anglpd, 12-15 

 dm high; ?p'nea ; n f-reenish -brown bun^h- 

 f-s: fruit e refills^ -yellow, iis "reolne bear- 

 !n<r P-S c tovt spln^. Tyre. Pa'r^er ^0 of 

 *R('i in v b Mo bo*- ^ar.l. Sonora "Coul- 

 ter, Cont Na hb 3:101. 



