Tas. 7222. 
CEREUS Gicanrzvs. 
Native of Southern California. 
Nat. Ord. Cactra.—Tribe EcuinocactTe2, 
Genus Cereus, Haw. ; (Benth. & Hook. f. Gen. Pl. vol. i. p. 849.) 
CerEvus (Lepidocereus) giganteus; erectus, cylindricus, simplex y. parce 
ramosus et candelabriformis, basin et apicem versus attenuatus, ramis 
paucis erectis, vertice applanato tomentoso, costis infra sub 13 sursum 
18-21 rectis acutatis, sinubus acutis, areolis prominulis ovato-orbiculatis 
junioribus albido-tomentosis, aculeis rectis basi bulbosis tenuiter sulcatis, 
radialibus 10-16, inferioribus brevioribus, summis 4—-5-ezteris mul- 
toties longioribus validis, floribus apicem versus caulis aggregatis, ovario 
ovoideo, sepalis oblongo-ovatis obtusis imbricatis nudis v. parce aculeatis 
tecto, calycis tubo mediocri, sepalis lineari-oblongis obtusis arcte imbri- 
catis inferioribus in axillis lanigeris,tintimis 10-15 apicibus undulatis 
spathulatis, petalis 25-35 obovato-spathulatis convexis recurvis albis, sta- 
minibus numerossisimis, antheris dense congestis, stylo incluso, stig- 
matibus 12-18 linearibus obtusis, bacca obovoidea v. pyriformi, pericarpio 
demum 38-4-valvi, pulpa coccinea, seminibus numerossisimis. oblique 
obovoideis lucidis exalbuminosis, cotyledonibus foliaceis tramatis. ~ 
C. giganteus. Engelm. Cact. of Emory Rep, p. 22 (1848); in Am. Journ. Se. 
& Arts, Ser. ii. vol. xiv. (1852) p. 835; Synops. of Cactez of U. States, in 
Proc, Am. Acad. Arts & Se. vol. iit. (1856) p, 287; in Rep. of Whipple's 
Railroad Surv, vol, iv. (1856) p. 36; im Rep. of Emory Mew. Boundary 
Survey, vol. ii. pt. i. (1859) p. 42, t. LXI., LXIL., et Tab. Front. Trelease 
& A. Gray, Bot. Works of G. Engelm. pp. 118, 122, 125, 140, 161, 202, 
t. LXI. LXII.; Bot. Zeit. 1854, p. 616. 
The flowering of this wonderful plant in England must 
be considered one of the triumphs of Horticulture. It has 
been long known to science, very imperfectly at first, from 
accounts brought by W. H. Emory of a gigantic Cactus 
which he saw in 1847 during his military reconnaisance 
from the Missouri River to San Diego in California, and 
who figured it in several plates that accompany his Report 
(pp. 72—79). From seeds brought by Mr. Emory to Dr. 
Engelman, of St. Louis, that botanist pronounced it to be 
probably a species of Cereus, but it was not till Dr. Parry 
accompanied a second expedition to the same regions, in 
1852, that the plant was scientifically known. From Dr. 
Parry’s notes Dr. Engelman was enabled to describe the 
Marcu Ist, 1892. 
