1807 
* CEREUS triangilaris. = 444004 EV S 
un dolus 
Triangular Torch-thistle. 
ICOSANDRIA MONOGYNIA. 
Nat. ord. Cacracem. (Introduction to the Natural System of Botany, 
p. 54.) ; 
CEREUS, D. C. Sepala numerosissima, imbricata, basi ovario adnata, 
in tubum elongatum concreta, exteriora breviora calycinalia, media longiora colo- 
rata, intima petaliformia. Stamina numerosissima cum tubo concreta. Stylus 
filiformis apice multifidus. Bacca sepalorum reliquiis areolata, tuberculata aut 
squamata. Cotyledones nullæ? (depauperatæ). Frutices carnosi, elongati, 
axi ligneo internè medullifero donati, angulis verticalibus spinarum fascicu- 
los gerentibus regulariter sulcati. Anguli seu ale nunc plurime, nunc pau- 
cissime, rariùs due tantum et tunc rami compresso-alati. Flores ampli è 
spinarum fasciculis aut crenis angulorum orti. De Cand. Prodr, 3. 463. 
$. 2. Serpentini. Caulis articulatus prostratus radicans vel volubilis. D. C. 
: *** 3-4-angulares. ; 
C. triangularis ; repens trigonus, aculeis brevibus quaternis decussatis, sepalis 
exterioribus spatulatis apice foliaceis, petalis lanceolatis cuspidatis. 
Cactus triangularis. Linn. sp. pl. 666. Jacq. amer. 152. 
Cereus triangularis. Haworth. syn. 180. De Cand. prodr. l. c. 
A native of Mexico and the West India Islands, whence it 
was introduced long since, but it flowers so rarely that it has 
never yet been represented from an European specimen. 
Bradley, who has given it in his work on succulent plants, 
has only figured its stem. 
For the specimen from which our drawing was made 
we are indebted to Sir George Staunton, Bart., in whose 
garden at Leigh Park, near Havant, it flowered in Sep- 
* Literally, a torch’ or taper; a name translated by the English Torch- 
thistle ; and given to these plants in consequence of the up right kinds having 
something the appearance of the tapers used in the ceremonies of the Roman 
Catholic religion. 
VOL. AE, L 
