31 
radialibus 40-50 stellatis, centrali unico longiore robustiore; flore 
flavo breviusculo ; bacca aculeatissima ; seminibus magnis Iucidis. 
On hills near San Piego, California, growing in thick patches. — 
Stems several feet long; branches 6-9 inches high, 1| inches in 
diameter. Fruit very spinoSe, with seeds over one line in length. 
27. C. variabilis, Pfeiff. : erectus, 3-4 angulatus ; areolis remo- 
tis ; aculeis 4 - 6 brevibus radiantibus, 2-4 interioribus validis elon- 
gatis insequalibus divaricatis, centrali deflexo ; flore magno albo noc- 
turno ; bacca coccinea aculeolata; seminibus magnis lsevibus. 
On the lower Rio Grande: fl. in May and June. — Well known 
from all parts of tropical America. Fruit 3 to 10 feet high, 2 inches 
in diameter; larger spines 12-18 lines long. Fruit 2-3 inches 
long, nearly 2 inches in diameter. 
28. C. Greggii, E. in Wish Rep. : gracilis, e radice crassa napi- 
formi erectus; ramis 3 - 6-angulatis, rufescentibus ; areolis confertis ; 
aculeis e basi bulbbsa abrupte subulatis brevissimis nigricantibus, ra¬ 
dialibus 6-9, centralibus 1 - 2 ; floris elongati albidi tubo aculeolis 
capillaceis flexuosis munito; bacca sessili obovata apice rostrata; 
seminibus rugosis. 
Yar. a. cismontanus : areolis elongatis; petalis latioribus. tfr* 
Var. transmontanus : areolis ovato-orbiculatis; petalis angusti- 
From Western Texas to Sonora, and south to Chihuahua : fl. May 
and June. — Root a large fleshy tuber, sometimes 6 inches in diame¬ 
ter. Stems 2 — 3 feet high, 9—12 lines thick, usually 4- or 5-angled; 
spines J - 1 line long, very sharp ; lower ones longer. Flower 6 or 
8 inches long, 2 - 2£ wide. Fruit 1 - 1£ inches long. Seed 1£ - 1 \ 
lines long. 
Subgen. 3. Lepidocereus. Caulis elongatus: fasciculi aculeo- 
rum steriles et florigeri similes: floris tubus brevior squamosus: 
phylla ntimerosissima : stigmata pallida: semina leevia: embryo ha- 
29. C. giganteus, E. in Emory’s Rep. 1848: erectus, elatus, 
parce erecto-ramosus, 18-21-costatus; aculeis 12- 16 radialibus 
rnsequalibus, centralibus sub-6 robustis basi bulbosis corneis basi nigris 
cseteros superantib'us, infimo longiore deflexo ; floribus subterminalibus 
alb id is ; bacca obovata demum 3 - 4-valvi. 
From the Lower Gila north to Williams’s River (better known 
0 1 2 3 4 5 6 7 8 9 10 
cm copyright reserved 
