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( 3922 ) 
CEREUS CHRULESCENS. BLUE-STEMMED 
CEREUS. 
PKK MEK KEE EERE ERE 
Class and Order. 
IcosANDRIA Monoeynlia. 
( Nat. Ord.—Cacrtea. ) 
Generic Character. 
Sepala numerosissima imbricata, basi ovario adnata, in 
tubum elongatum concreta, exteriora breviora calicinalia, 
media longiora colorata, intima petaliformia. Stamina nu- 
merosissima cum tubo concreta. Stylus filiformis, apice 
multifidus. Bacca areolata, sepalorum reliquis squamata 
aut tuberculosa. Cotyledones acuminate.—Frutices car- 
nosi, subglobosi vel elongatt, stricti, articulati vel repentes, 
axi ligneo interne medullifero donati, angulis verticalibus, 
spinarum fasciculos gerentibus vel inermibus, regulariter 
sulcati. Anguli seu ale nunc plurime, nunc paucissime, 
rarius due tantum, et tune rami compresso-alati imermes. 
Flores ampli e spinarum fasciculis lateralibus trunci aut 
ramorum vetustiorum, aut crenis angulorum orti. Fructus 
oviformes, plerumque anno sequente maturescentes, edules. 
Pjeiff 
Specific Character and Synonyms. 
Cereus cerulescens ; erectus apice attenuatus cerulescens 
8-angularis, costis obtusis crevatis, areolis approxima- 
tis, aculeis acicularibus e tomento_nigro bicoloribus 
albis aut nigris, exterioribus sub-12 radiantibus, cen- 
tralibus 3—4, summo spe validiore, alabastro cla- 
vato, flore amplissimo, petalis undulato-dentatis. 
Cereus cerulescens. “ Hort. Dyck. p. 335.” Pfeiff. Enum. 
Cact. p. 85. ee 
Cereus (thiops. “ Haw. Phil. Mag. 1830, p. 109 ?” 
In July, 1841, the specimen of this Cereus, about four 
feet in height and nearly three inches in the thickest dia- 
; meter 
VOL. XV. I 
