( 3125 ). 
Cereus Royenr. Van Roven’s Cereus. 
= Conia Gyvtetacn ds 1 Cll, = oj perby Mniw 
BEER EEE EEE EEEEEEE 
Class and Order. 
IcosanpRIA Monoeynia. 
( Nat. Ord.—Cacrez. ) 
Generic Character. 
Sepala numerosissima imbricata basi ovario adnata, in 
tubum elongatum concreta, exteriora breviora calycinalia, 
media longiora colorata, intima petaliformia. Stamina 
numerosissima cum tubo concreta. Stylus filiformis apice 
multifidus. Bacca sepalorum reliquiis areolata tuberculosa 
aut squamata. Cotyledones nulle ?>—Frutices carnosi elon- 
gati axi ligneo interne medullifero donati, angulis vertica- 
libus spinarum fasciculos gerentibus, regulariter sulcati. 
Anguli seu ale nunc plurime, nunc pducissime, rarius due 
tantum et tunc rami compresso-alati. Flores ampli e spt- 
narum fasciculis aut crenis angulorum ort. DC. — 
Specific Character and Synonyms. 
Cereus * Royeni ; erectus simplex continuus 9—10-angu- 
latus, angulis acutiusculis, spinis fasciculatis 68 
aciculiformibus fuscis junioribus lana laxa paulo lon- 
gioribus, tubo florali brevi crassa inermi, lobis exteri- 
oribus parvis viridi-purpureis, interioribus roseis 
omnibus subacutis. 4s ae 
Cereus Royeni. Haw. Syn. p. 182. De Cand. P 
x p- 466. : : = z ; : 
Cactus Royeni. Linn. Sp. Pl. p. 688. Ait. Hort. Kew. ed. 
2. v.3. p. ITT. 
Descr. With ‘us, this plant has attained a height of ae 
about three feet and a half, and a diameter of an inch and 
ne 
* From the Latin word Cereus, signifying pliant, which many of the — 
Species are, 
