CKASSULACEJE. (uilPIXE FAMILY.) 149 



1. PARNASSIA, Touru. GRASS OF PARNASSUS. 



Characters same as the order. 



1. P. Caroliniana, Michx. Leaves broadly ovate or cordate-ovate; 

 cauline one near the base of the stem, clasping; petals oval, sessile, with im- 

 pressed greenish veins ; sterile stamens by threes, distinct almost to the base, 

 2 -3 times as long as the recurved fertile ones. Damp soil, Florida, and 

 northward. Oct. -Nov. Stem 12' -18' high. Flowers 1' wide. 



2. P. asarifolia, Vent. Leaves reiiiform ; cauliue oue near the middle 

 of the stem, clasping ; petals broadly ovate, short-clawed ; sterile stamens by 

 threes. Mountains of Georgia and North Carolina. August - Sept. Flow- 

 ers larger than in No. 1 . 



ORDER 52. CBASSULACE^E. (ORPINE FAMILY.) 



Succulent herbs, with exstipulate leaves, and regular perfect and 

 mostly cymose flowers. Sepals 3-20, more or less united at the 

 base, persistent. Petals as many as the sepals, inserted on the base 

 of the calyx, imbricated in the bud, rarely united, or wanting-. Sta- 

 mens as many, or twice as many, inserted with the petals. Ovaries 

 as many as the sepals, separate, or united below. Carpels several- 

 seeded, opening along the inner suture. Seeds anatropous. Embryo 

 straight, in thin albumen. 



Synopsis. 



* Carpels separate, opening within. 



1. SEDUM. Sepals and petals 4 - 5. Stamens 8 or 10. Carpels many-seeded. 



2 TILLjEA Sepals and petals 3-4. Stamens 3 or 4. Carpels 2 - several-seeded. 



3. BRYOPHYLLUM. Calyx inflated. Corolla monopetalous. Stamens 8. 



# * Carpels partly united. 



4. DIAMORPHA. Calyx 4-cleft. Petals 4. C \rpels opening without. 



5. PENTHORUM. C ilyx 5-cleft. Petals 5. C irpels opening across. 



1. SEDUM, L. ORPINE, STONECROP. 



Sepals 4-5 Stamens 8 or 10. Carpels distinct, many seeded, with an 

 entire scale at the base of each. Herbs smooth and fleshy. 



1. S- telephioides, Michx. Stem stout, erect or ascending, very leafy 

 throughout; leaves alternate, oblong-obovate, toothed or entire; the lower 

 ones mostly tapering into a petiole, the upper sessile ; cymes compact, erect 

 many-flowered; petals flesh-color, ovate-lanceolate, acuminate ; stamens 10; 

 carpels acuminate, pointed with the slender style. Dry rocks, along the 

 mountains. June. Stem 7'-12' high. Leaves I'-l^'long. 



2. S. ternatum, Michx. Stems low (3'-8'), branching at the base, as- 

 cending; lowest leaves crowded, spatulate or obovate, 3 in a whorl; the upper 

 ones scattered, oval or lanceolate ; cyme composed of 3 recurved branches ; 

 stamens 8, those of the central flowers 10. Mountain rocks. May -June. 

 2/ Flowers white. 



