FfCOlDEJE. 133 



1. TILL^A. Linn. 



Calyx 3 4-parted. Petals 3 4, oblong, acuminate. 

 Stamens 3 4. Scales none or minute. Carpels 3-^-4, 

 somewhat contracted in the middle, 2-seeded. 



Tetrandria. Tetragynia. 



T. simplex Nutt. : stem erect and simple ; leaves connate, oblong- 

 linear and somewhat acute ; flowers alternate, sessile ; petals erect, 

 twice as long as the calyx. 



HAB. Muddy banks of streams. N. S. July, Aug. . Plant 

 minute. Mr. Nuttall has given a figure and detailed description 

 of this plant in the Journal of the Philadelphia Acad. i. 114. 



2. SEDUM. Linn. 



Calyx 5-parted ; sepals ovate, often turgid and leafy. Pe- 

 tals 5, often spreading. Stamens twice the number of the 

 petals. Carpels 5, with a nectariferous scale at the base of 

 each. Decandria. Pentagynia. 



1. S. tematum Mich. : stem creeping, a little scabrous ; leave* flat, 

 rounded-spathulate, ternate ; cymes mostly 3-spiked ; terminal flow- 

 ers decandrous ; the rest octandrous. S. portulaccoides Muhl. 



HAB. Rocks. Penn. to Car. May. U-Stem 46 inchei 

 long. Lower leaves rounded, the upper lanceolate. Flowers 

 white, sessile. Stone Crop. 



2. S. telephioides Mich. : leaves ovate, flat, acute at each end, tooth- 

 ed ; corymb fasciculate, many-flowered. 



HAB. Rocks. N. J. to Car. July. If. Stem branching. Leaves 

 alternate, sometimes oval. Corymb terminal, many-parted. 

 Flowers pale purple. 



3. PENTHORUM. Linn. 



Calyx 5-parted. Petals 5. Stamens 10. Carpels 5, con- 

 creted at base into a capsule. Capsule 5-beaked, 5-celled, 

 5-sided at the apex. Seeds many. 



Decandria. Pentagynia. 



P. sedoides Linn. : stem branched, angular above ; leaves alternate, 

 lanceolate, subsessile, unequally serrate ; flowers in terminal one-sided 

 spikes or racemes ; seeds numerous, elliptical. 



HAB. Overflowed grounds. Can. to Car. July, Aug. If.. 



Stem 12 18 inches high. Flowers white or pale yellow. 



I Irginian Stone Crop. 



ORDER LIV. FICOIDE^E. De Cand. Lind. 



Sepals definite, usually 5, but varying from 4 to 8, more or 

 less combined at the base, equal or unequal. Pttak indefi- 



12 



