CRASSULACEiE. (ORPINE KAMII.Y.) 177 



2. TILL^A, Mich. 



Sepals, petals, stamens, and pistils ."3 ur 4. IVLs 2 - mauy-seedecl. — Very 

 small tufted annuals, with opj)osite entire leaves and axillary flowers. (Named 

 in honor of Mirli<trl Angela Tilli, an early Italian hotani.st.) 



1. T. simplex, Nutt. Rooting at the base (1-2' high); leaves linear- 

 oblong ; flowers solitary, nearly sessile ; calyx half the lengtli of the (greeni.sh- 

 white) petals and the narrow 8- 10-seeded pods, the latter with a stale at the 

 base of each. — Muddy river-banks, ^lass. to Md. .July -Se])t. 



3. SEDUM, Tourn. Stone-croi'. Orimnk. 



Sepals and petals 4 or 5. Stamens 8 or 10. Follicles many-seeded ; a little 

 scale at the base of each. — Chiefly perennial, smooth, and thick-leaved herbs, 

 with the flowers cymose or one-sided. Petals almost always narrow and acute 

 or pointed. (Name from sedeo, to sit, alluding to the manner in which these 

 plants fix themselves upon rocks and walls.) 



* Flowers perfect and sessile, as it were spiked along one side of spreading Jloicer- 



ing branches or of the divisions of a scorpioid ci/me, thejirst or central flower 

 vwstli/ 5-merous and lO-cmdrous, the others often 4:-merons and S-androus. 

 H- Flowers white or purple. 



1. S. pulchellum, Michx. Stems ascending or trailing (4 -12' high); 

 leaves terete, linear-fliforjn, much crowded; spikes of the cyme several, densely 

 flowered; petals rose-purple. — Va. to Ga., west to Ky., E. Kan., and Tex.; 

 also cultivated in gardens. July. 



2. S. N6vii, Gray. Stems spreading, simple (3-5' high) ; leave$ all alter- 

 nate, those of the sterile shoots icedge-ohovate or spatulate, on flowering stems 

 linear-spatulate and flattish ; cyme about 3-spiked, densely flowered ; petals 

 ichite, more pointed than in the next ; the flowering 3 or 4 weeks later ; leaves 

 and blossoms smaller. — Kocky cliffs, mountains of Va. to Ala. 



3. S. ternatum, Michx. Stems spreading (3 -6' high); leaves flat, the 

 lower whorled in threes, wedge-ohovate, the upper scattered, ohlong ; cyme 3-spiked, 

 leafy; petals white. — Rocky woods, N. Y. to Ga., west to Ind. and Tenn. 



■t- -»- Flowers i/ellow. 



S. Acre, L. (Mossy Stone-crop.) Spreading on the ground, moss like; 

 leaves very small, alternate, almost iml)ricated on the branches, ovate, very 

 thick; petals yellow. — Escaped from cultivation to rocky road.sidcs, etc. 

 July. (Nat. from Eu.) 



4. S. Torreyi, Don. Annual ; stems simple or branched from the ba^e 

 (2-4' high) ; leaves flat or teretish, scattered, ohlong, 2-3" long ; petals rather 

 longer than the ovate sepals; carpels at length widely divergent. — Mo. to 

 Ark. and Tex. 



* * Flowers in a terminal naked and regular cyme or cluster, more or less pedun- 



cle d ; leaves flat, ohovate or oblong, mostli/ alternate. 

 -*- Flowers perfect, 5-merous, lO-androus. 



5. S. telephioides, Michx. Stems ascending (6-12' high), stout, leafy 

 to the top; leaves oldong or oval, entire or sparingly toothed ; cyme small; 

 petals flesh-color, ovate-lanceolate, taper-pointed ; fuliicles tapering into a slender 

 sti/le. — Dry rocks, from western New York to N. Ga. and S. Ind. June. 



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