OF ORNAMENTAL EXOTIC PLANTS. 
161 
2.~C0TYLED0N CORUSCANS Haw. THE GLITTERING COTYLEDON. 
Synonyms. — C. canalifolia Phil. Mag. 
Engravings. — Bot. Mag., t. 2601 ; Lodd. Bot. Cab., t. 1030. 
Specisic Character. — Leaves decussate, aggregate, cuneate-oblong, 
channelled, with thickened margins, apiculate, covered with white 
mealiness. Flowers pendulous, disposed in umhellate panicles. 
((?. Don.) 
Description, &c. — A showy-looking plant with very singular leaves, which are deeply channelled on the upper 
surface, having very thick incurved margins, and which are terminated with a purple niucro. The flower-scape 
grows above a foot long, and terminates in an umbel-formed panicle of numerous orange-red, long, pendulous 
flowers, the colour of which deepens with age. The species is a native of the Cape of Good Hope, and was 
introduced in 1818. 
3.— COTYLEDON DECUSSATA Sims. THE CROSS-LEAVED COTYLEDON. 
Synonyms. — C. papillaris Lin. j acute, erect. Flowers in panicles, glabrous. Caudex decumbent. 
Engravings. — Bot. Mag., t. 2518 ; and Bot. Reg., t. 915. f clothed with fine villae. ((?. Don.) 
Specific Character. — Leaves opposite, terete-ovate, fleshy, glabrous, | 
Description, &c. — This species, though very curious, is not nearly so ornamental as either of the other kinds, 
and it is easily distinguished by its cylindrical and very fleshy leaves. 
OTHER SPECIES OF COTYLEDON. 
These are very numerous, but generally speaking there is a sufficient resemblance between all the species to 
render it easy to ascertain wliat genus they belong to, and at the same time to render it difficult, by mere words, to 
point out the difference between them. One species, however, is so distinct from the rest as to merit a particular 
description. This is C. curvijlora Sims, the flowers of which are tubular, yellow streaked with red, and have a 
purple mouth, the tube of the flowers being curved, and the peduncles twisted in what appears a somewhat 
fantastical manner. The leaves are linear and semicylindrical, and the stem, which is fleshy, is rough in the lower 
part, from the vestiges of former leaves. 
GENUS IV. 
ECHEVERIA Dec. THE ECHEVERIA. 
Lin. Syst. DECANDRIA PENTAGYNIA. 
Generic Character. — Calyx five-parted ; sepals erect, referrible to 
leaves, united at the very base. Petals five, also united at the base, 
erect, thick, stiflBsh, thickest at the middle nerve, and nearly trigonal 
at the base, acute. Stamens ten, shorter than the petals, and adnate 
to them at the base. Scales five, short, obtuse. Carpels five, ending 
each in a subulate style. ((?. Don.) 
Description, &c. — The plants belonging to this genus are all ornamental fleshy shrubs, natives of Mexico, with 
rather singular but veiy handsome flowers. Most of the species are only of late introduction. The genus is named 
in honour of M. Echeveri, the artist employed to make the drawings in the Flora Mexicana, edited by Mocino 
and Sesse. 
1.— ECHEVERIA RETUSA Lindl. THE BLUNT-LEAVED ECHEVERIA. 
Engraving. — Bot. Reg. for 1847, t. 57. dense, subcorymbose ; branches few-flowered. Sepals linear, unequal. 
Specific Character. — Leaves obovate-spatulate, somewhat retuse, shorter than the corolla. Petals acutely keeled, gibbous at the base, 
glaucous, crenulate ; the stem-leaves linear-oblong, entire. Panicle 
Description, &c. — This species was raised from seeds received from Mr. Hartweg in February, 1846, and it is 
said “ to have been collected on rocks near Anganguco, in Mexico.” It is a dwarf plant, the leaves of which are at 
Y 
