276 LXI1V. CRASSULACEZ. SEDUM, 
with a spadix (cophaliom), which is cylindric, tuberculate, densely tomentese, 
bearing the red flowers at summit. fF 
Orper LXII. MESEMBRYACEA®.—Ficoms. 
Plants fleshy, of singular and various forms, yet often beautiful. 
Lvs. mostly opposite, thick and oddly shane i (tion. 
Fis. solitary, axillary and terminal, remarkable for their profusion, numerous, brilliant, and of long dura- 
Cal.—Sepals varying from 4 to 8, but usually 5, somewhat connected at base. 
Cor.—Petals indefinite, colored, in many rows. 
Sta. indefinite, distinct, arising from the calyx. 
Ova. inferior or nearly superior, many-celled. Stigmas numerous. 
Caps. many-celled, nets | in a stellate manner at the apex. 
Sds. more communly indefinite, attached to the inner angle of the cells. 
Genera 5, species 375, chiefly natives of the arid, sandy plains of the Cape of Good Hope. The species 
@re much cultivated for ornament. 
MESEMBRYANTHEMUM. 
G7. peonpZe.a, mid-day, avSos ; flowers expanding at midday. 
Character essentially the same as that of the order. 
1. M. crystatiinum. Ice-plant.—Rt. biennial ; lvs. large, ovate, acute, wavy, 
frosted, 3-veined beneathA popular house plant, from Greece. It has a 
creeping stem, 1f or more in length, and, with the leaves, is covered over with 
frost-like, warty protuberances, giving the plant a very singular aspect. Flowers 
white, appearing all summer. + 
2. M. corviroutium. Heart-leaved Ice-plant.—Procumbent, spreading; Jvs. 
petiolate, opposite, cordate-ovate; cal. 4-cleft, 2-horned.—2| An interesting plant 
in house cultivation, from Cape Good Hope. The whole plant fleshy and suc- 
culent like others of its kind. Flowers pink-colored. Calyx thick, green, the 
horns opposite. Capsule translucent, marked at summit with cruciform lines. ¢ 
Orver LXIV. CRASSULACE A.—Hovusetteexs. 
Plants herbaceous or shrubby, succulent. Lvs. entire or pinnatifid. Svép, 0. 
Fis. sessile, usually in cymes. ‘ 
Cal.—Sepals 3—20, more or less united at base, persistent. 
Cor.—Petals as many as the sepals, distinct, rarely cohering. 
Sta. as many as the petals and alternate with them, or twice as many. : ‘ 
Ova. as many asthe petals and opposite them. Fil. distinct. Anth. 2-celled, bursting lengthwise. 
Fr.—Follicles as many as the ovaries, each opening by the ventral suture, many-seeded. 
Genera 22, species 450. chiefly natives of the warmer regions of the globe, particularly the Cape of Good 
Hope. About 20 are found in North America. They grow in the thinnest and dryest soil, on naked 
rocks, pany deserts, &c. They have no peculiar property except a slight acridity. Many are highly 
ornamen' 
Conspectus of the Genera. 
, ; Stamens 4. oh pred eadte hh. ge ee eh” Siete - » Tittea. 1 
in 4s ; (Stamens 8. GT AE: - «+ Bryophyllum. 5 
Carpels distinct. 2 Sedwm. 2 
in 5s; stamens 10; pees united. : > Penthorum. 4 
Floral organsarranged 2ini2s. . . =. > feb . op.) oo GS it, eepereEoein..S 
1.TILLAA. Michx. 
In memory of Mich. Ang. Tilli, an Italian botanist; died 1740. 
Calyx of 3 or 4 sepals united at base; petals 3 or 4, equal; sta- 
mens 3 or 4; caps. 3 or 4, distinct, follicular, opening by the inner 
surface, 2 or many-sceded.—® Very minute, aquatic herbs. Lvs. opposite. 
T. simptex. Nutt. (T. ascendens. Eaton.) Pigmy-weed. 
St. ascending or erect, rooting at the lower joints; lvs. connate at base, 
linear-oblong, fleshy; fls. axillary, solitary, subsessile, their parts in 4s; pet. 
oval or oblong; carpels 8—10-seeded.—Near East Rock, New Haven, Ct. (Dr. 
Robbins), and Philadelphia, on muddy banks, rare. Stem 1—3’ high. Leaves 
2—3/ long. Flowers as large as a pin’s head. Petals oval, flat, acute, twice 
as long as the oval, minute calyx, longer than the stamens and fruit, and of a 
greenish-white color. Jl.—Sept. 
2, SEDUM. 
Lat. sedere, tosit; the plants, growing on bare rocks, look as if sitting there. 
Sepals 4—5, united at base; petals 4—5, distinct ; stamens 8— 
