OPUNTIA. CACTEÆ. 363 
ORDER LXXV.—CACTEÆ. Juss. 
Sepals numerous, usually indefinite and confounded with the petals, 
either crowning the ovarium or covering its whole surface. Petals 
numerous, usually indefinite, sometimes irregular, inserted at the mouth 
of the calyx. Stamens indefinite, cohering more or less with the petals 
and sepals : filaments long, filiform: anthers ovate, versatile. Ovayinm 
fleshy, cohering with the tube of the calyx, 1-celled : ovules indefinite : 
style filiform : stigmas several. Placente parietal, as many as the 
stigmas. Fruit succulent, l-celled. Seeds many, after having lost 
their adhesion nestling in a pulp, ovate or obovate. Albumen none: 
embryo straight, curved or spiral: radicle thick, obtuse, next the 
hilum.—Succulent shrubs. Leaves almost always wanting ; when pre- 
sent fleshy, smooth, entire, or spiniform. Flowers sessile. 
I. OPUNTIA. Tourn.; DC. 
Sepals numerous, adnate to the ovary, leaf-shaped ; uppermost ones flat, 
short ; innermost petaloid, obovate, rosaceous, expanded: the tube not pro- 
duced beyond the ovary. Stamens numerous, shorter than the petals. Style 
cylindrical, constricted at the base. Stigmas several, erect, thick. Berry 
ovate, umbilicated at the apex, tubercled and often bearing spines. Embryo 
somewhat spiral, nearly terete. Cotyledons semi-terete, during germination 
foliaceous flat and thick. Plumulasmall—Shrubs. Trunk at length terete ; 
when young, as well as the branches, jointed and usually more or less com- 
pressed ; the joints ovate, obovate, or oblong, bearing tufts of spines or 
bristles. Leaves small, like those of a Sedum, very caducous, under each 
younger tuft. Flowers arising either from the tufts, or margins of the joints, 
yellow or reddish. 
*1127. (1) O. Dillenii (Haw.:) erect: joints roundish-obovate, com- 
pressed, waved, glaucous: spines (yellowish) stout, one or more together, 
divaricating, inserted among and much longer than a tuft of short slender. 
ristles: corolla (yellow) twice as long as the stamens: ovary shorter than 
the corolla, furnished with a few tufts of bristles around its apex.—DC. prod. 
3. p. 472 ; Wight tab. (ined.)—Cactus Dillenii, Ker in Bot. reg. t. 255; Spr. 
syst. 9. p. 497-—C. Indicus, Roxb. fl. Ind. 2. p. 475.—Dillen. Elth. t. 296. 
Roxburgh is of opinion that this is a native of India: but it is much more 
Probable that it was brought from America, and is now merely naturalized. . 
ORDER LXXVI.—SAXIFRAGACEJE. Juss. 
Sepals usually 5 (rarely 3, 4, 7, or 9), more or less cohering at their 
base: the limb usually persistent. Petals as many as sepals ( ge m 
Donatia), inserted on the tube of the calyx, alternate with its lobes, 
iduous or persistent, very rarely wanting. Stamens perigynous, 
either equal to (or rarely fewer than) the petals, and alternate with 
them ; or twice as many as the petals, some alternate, some opposite to 
_ them (in one species, by the abortion of the alternating stamens, there 
