Oedbb 60.— CRASSULACEiE. 367 



TsiBE 1. OnAiisnLB^. Carpelsdlatinct, forming a circlo of foUidei (a) 



a Flowers all 4-partod. Stamens 4 .Tll.L^A. 1 



a Flowers all 4-parte(l. Stamens 8 Brtopiitllitu. 9 



a Flowers 5-partod, or 4 and 5-partetl. Petals distinct, spreading. Sbdum. -S 



a Flowers 6-parted. Petals united below, erect, connivent Ecokvebia. 4 



a Flowers 6 to20-partod. Hypogynous scales laciniate SEslPEETivuii. 5 



Tkibe 3. DiAMOEPiiE^. Carpels united into a many-celled capsule, (b) 



b Flowers 4-parted. Stamens 8 Diamoepua. § 



b Flowers 5-parted. Stamens 10 PENTHOEUit. 7 



1. TILL.£^A, Mx. PioMY-WEED. (To Michael Angela 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. — (D Very minute, 

 aquatic herbs. Lvs. opposite. 



T. sfmplez Nutt. St. ascending or erect, rooting at tho lower joints ; lvs. con- 

 nate at base, linear-oblong, fleshy ; fis. axUlary, solitary, subsessilo. their parts in 

 4s; pet. oval or oblong; carpels 8 to 10-seeded. — Near East Eock, New Hayen, 

 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, fiat, acute, twice 

 as loag aa tho oval, minute calyx, longer than the stamens and fruit, and of a 

 greenish white color. Jl. Sept. 



2. BRYOPHYL'LUffl, Salisb. (Gr. /3pva), to grow, (j>vXXov, 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. calycinum 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. Pis. in a loose, terminal 

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

 oxserted corollas. — This plant is distinguished in vegetable physiology (see § 632), 

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



3. SELDOM, L. Stone Crop. (Lat. sedere, 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 to 

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

 ftiostly herbaceous. Inflorescence cymous. Fls. mostly pentamerous. 



§ Flower of the branches 4-merous, central fl. B-iuerous Nos. 1, 2 



§ Flowers all pentamerous. Spikes not umbellate Nos. 3 — ;< 



1 S. ternatnm. Mx. Los. iernaiety veriicillate, 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. puloh611um Mx. Sts. branching at base, ascending; lvs. alternate, linear. 

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

 the crowded flowers unilateral, ootandrous, the central fl. usually decandrous. — 

 On rooks and mts., Ta. 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 iase, mbdeniate, 

 smooth ; cymes dense, corymbous ; sta. 10, the pet., sep. and carp, in 53. — Found 

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

 high. Lvs. 1 to 2' long, J 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. 



