Class XII. ICOSANDRIA. 411 
1148. Rosa. Cal. urceolate, 5-cleft, fleshy, contracted at orifice. Petals 5. Grains bony, hairy, included in 
tiie flesliy tube of calyx. 
1149. Rubus. Cal. 5-cleft. Petals 5. Berry composed of many cohering fleshy grains. Receptacle nearly 
dry. 
1150. Dalibarda. Cal. 5-cleft. Petals 5. Berry dry. Styles 5, long, deciduous. 
1151. Fragaria. Cal. 10-cleft. Pet. 5. Grains inserted upon a fleshy deciduous receptacle. 
1152. Comarum. Cal. 10-cleft. Petals 5, less than calyx. Receptacle ovate, spongy, persistent. 
1153. Potentilla. Cal. 10-cleft. Petals 5. Grains rugose, roundish, naked, fixed to a small dry receptacle. 
1154. Tormentilla. Like Potentilla, but cal. 8-cleft. Petals 4. 
1155. Geum. Cal. 10-cleft. Sepals unequal. Petals 5. Grains generally with a jointed awn. 
^156. Kerria. Cal. S-cleft. Pet. 5, orbicular. Ovaries 5-8, smooth, globose. Ovules soh tar y. Styles filiform. 
Capsules globose. 
1157. Calycanthus. Stamens unequal, deciduous ; the 12 outer fertile. Grains man)'. 
1158. Chimonanthus. Stamens equal, persistent ; the 5 outer fertile, in maturity closing the orifice of the 
calyx by their united bases. 
1159. Dryas. Cal. simple, 8-cleft. Petals 8. Grains with a hairy tail. 
1160. Coluria. Like Sieversia, but the style jointed with the top of ovarium and deciduous, and the achenia 
glandular, included in the long turbinate tube of the calyx. 
1161. Sieversia. Cal. 10-cleft. Petals 5. Stamens indefinite. Ovaries indefinite, with an ascending ovule. 
Styles terminal, continuous. Achenia awned with the persistent style. Embryo erect. 
MONOGYNIA. 
6839 Roundish covered with ovate bearded tubercles ' 
6840 Simple clavate, Tubercles ovate with woolly spines at end, Wool shorter than spines 
6841 Roundish depressed with ten angles 
6842 Proliferous, Warts small cylindrical. Spines fine whitish the lowest like hairs 
6843 Roundish multiplex. Warts cylindrical bearded above furrowed proliferous 
6844 Roundish deeply 16-angled, Angles with a remarkable swelling below each parcel of spines 
6845 Warts large A ery green downy at end. Spines about 4 strong expanded 
6846 Simple rounded obovate. Warts woolly at end with more than 20 spines 
6847 Columnar, Warts small very numerous with little spines between, 2 in each parcel much longer than rest 
6848 Roundish with about 14 angles 
6849 Roundish with 15 angles, Spines broad recurved numerous 
6850 Oblong with many angles. Angles and spines middle-sized straight 
6851 Oblong with about 20 angles, Rays of spines capillary long 
6852 Depressed spheroidal with about 21 angles, Rays of spines variable the lowest very broad fiat deflexed 
6853 Rounded bright green with 14 angles. Ribs straight with long thick white spines 
and Miscellaneous Particulars. 
C. melocactus, mammillaris, and proliferus, by many thought to be but one species, grow upon the steep 
sides of rocks in the hottest parts of America, where they seem to be thrust out of the apertures, having 
little or no earth to support them : their roots shooting down into the fissures of the rocks to a considerable 
depth, so that it is troublesome to get the plants up. As they delight in such rocky places, they seldom live 
long when transplanted into a better soil. In times of great drought the cattle repair to the barren rocks 
where these plants grow, rip them up with their horns, tear off the outside skin, and greedily devour all the 
fleshy moist part. The fruit is frequently eaten by the inhabitants of the West Indies. It is about three 
quarters of an inch in length, of a taper form, drawing to a point at the bottom, but blunt at the top : the 
taste is an agreeable acid. 
C. repandus has a fruit about the size and shape of a Bergamot pear, having many soft spines on the skin ; 
the outside is a pale yellow, the inside very white, full of pulp, having a great number of small black seeds 
lodged in it. It frequently flowers in July, and in warm seasons will perfect its fruit, which has very little 
flavor in this country, but is frequently served up at table in the West India islands. 
The fruit of lanuginosus and peruvianus are also occasionally eaten where they are natives. 
C. grandiflorus and flagelliformis have flowers remarkable for their beauty and sweetness. C. grandiflorus, 
\yhen arrived to a sufficient strength, will produce many exceeding large, beautiful, sweet scented flowers, 
like most of this kind, of very short duration, scarcely continuing six hours full blown : nor do the flowers ever 
open again when once closed. They begin to open between seven and eight of the clock in the evening, are 
fully blown by eleven, and by three or four in the morning they fade, and hang down quite decayed ; but during 
their short continuance, there is scarcely any flow er of greater beauty, or that makes a more magnificent 
appearance ; for the calyx of the flower, when open, is near a foot diameter ; the inside of which, being of a 
splendid yellow color, appears like the rays of a bright star ; the outside is of a dark brown ; the petals being of 
a pure white add to the lustre ; the vast number of recurved stamens surrounding the style in the centre of 
the flower make a fine appearance : add to all this the fine scent of the flower, which perfumes the air to a 
considerable distance. 'J'here is scarce any plant which deserves a place in the hothouse so much as this, 
especially as it may be trained against the wall, where it will not take up any room. The usual season of its 
