ORDER 60. CRASSULACE.E. 367 



TWE 1. CRABSITLK^:. Carpels distinct, forming a circle of follicles, (a) 



a Flowers all 4-parted. Stamens 4 TILL^A. 1 



a Flowers all 4-parted. Stamens 8 BIIYOPIIYLLCM. 2 



a Flowers 5- parted, or 4 and 5-parted. Petals distinct, spreading. SEDUM. 3 



a Flowers 5-parted. Petals united below, erect, contsivent EOIIKVEKIA. 4 



a Flowers 6 to 20-partcd. Hypogynous scales laciniate SEMPEKVIVCM. 5 



TRIBE 2. DIAMOKPHEJS. Carpels united into a many-celled capsule, (b) 



b Flowers 4-parted. Stamens 8 DIAMORPIIA. 6 



b Flowers 5-parted. Stamens 10 PENTIIOKUM. 7, 



1. TILL V A, MX. PIGMY-WEED. (To Michael Anyelo Tilli, an 

 Italian botanist ; died 1740.) Calyx of 3 or 4 sepals united at base ; 

 petals 3 or 4, equal ; stamens 3 or 4 ; capsules 3 or 4, distinct, follicu- 

 lar, opening by the inner surface, 2 or many-seeded. GD Very minute, 

 aquatic herbs. Lvs. opposite. 



T, simplex Nutt. St. ascending or erect, rooting at the lower joints ; Ivs. con- 

 nate at base, linear-oblong, fleshy ; fls. axillary, solitary, subsessile, their parts in 

 4s; pet. oval or oblong; carpels 8 to 10-seeded. Near East Rock, Now Haven, 

 Ct. (Dr. Robbin s), and Philadelphia, on muddy banks, rare. St. 1 to 3' high. 

 Lvs. 2 to 3" long. Fls. 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. BRYOPHYL'LUM, Salisb. (Gr. /tyvo), to grow, Qvtyov, leaf; i.e., 

 germinating from a leaf.) Calyx inflated, 4-cleft scarcely to the middle ; 

 corolla monopetalous, the tube long and cylindrical, 4-sided and obtuse 

 at base ; limb in 4 triangular, acute lobes ; seeds many. An ever- 

 green, fleshy, suffruticous plant, native of E. Indies. Lvs* opposite, un- 

 equally pinnate, part of them sometimes simple. Fls. greenish purple. 



B. calyciiium Salisb. Not uncommon in house cultivation, requiring but 

 little water, in a well-drained pot of rich loam. St. thick, green, about 2f 

 high. Lvs. 3 to 5-foliate, with thick, oval, crenate Ifts. Fls. in a loose, terminal 

 panicle, pendulous, remarkable for the large, inflated calyx, and the long, tubular, 

 exserted corollas. This plant is distinguished in vegetable physiology (see 532), 

 producing buds and new plants from the margin of its leaves. 



3. SELDOM, L. STONE CROP. (Lat. sedei'e, to sit ; the plants, grow- 

 ing on bare rocks, look as if sitting there.) Sepals 4 or 5, united at 

 base ; petals 4 or 5, distinct, spreading ; stamens 8 to 10 ; carpels 4 tp 

 5, distinct, many-seeded, with an entire scale at the base of each. 

 Mostly herbaceous. Inflorescenl^ cymous. Fls. mostly pentamerous. 



Flower of the branches 4- in erpus, centRil fl. 5-merous Nos. 1, 2 



Flowers all pentamerous. Spikes not umbellate Nos. 35 



1 S. ternatum MX. Lvs. ternateiy verticillate, obovaie, flat, smooth, entire, tho 

 upper ones scattered, sessile, lanceolate ; cyme in about 3 spikes ; fls. secund, tho 

 central one with 10 stamens, the rest with only 8. If Damp woods, Can. "West, 

 Penn., the Southern and Western States. Sts. 3 to 8' long, branching and de- 

 cumbent at base, assurgent above. Cyme with the 3 branches spreading and re- 

 curved, the white fls. loosely arrranged on their upper side. JL, Aug. f 



2 S. pulchellum MX. Sts. branching at base, ascending; Ivs. alternate, linear, 

 obtuse, sessilo with an auriculate base ; spikes umbellate, spreading, finally erect, 

 the crowded flowers unilateral, octandrous, the central fl. usually decandrous. 

 On rocks and mts., Va. to Ga. and Tex. Sts. 4 to 12' high, very leafy. Fls. 

 closely sessile, small ; petals rose-color, acute. May, Jn. 



3 S. telephioides MX. Lvs. Iroadly lanceolate, attenuate at lose, subdentate, 

 smooth; cymes dense, corymbous; sta. 10, the pet., sep. and carp, in 5s. Found 

 on rocks, lake and river shores, N. Y., N. J., Harper's Ferry, Va., etc. St. a foot 

 high. Lvs. 1 to 2' long, $ as wide. Fls. numerous, purple, in a terminal, branch- 

 ing cyme. Jn. Aug. Like the other species, very tenacious of life, and will 

 grow when pressed and apparently dried in the herbarium. 



