622 SAXIFRAGACE^E. 



ORDER CUCURBITACE^E. 



The common GOURD or CALABASH (LAGENARIA VUIXJARIS, Seringe.), origi- 

 nally from the tropics, is generally diffused over the Southern States, in 

 waste places and around dwellings. 



ORDER CRASSULACE^. 

 SEDUM, L. 



S. pusillum, Michx. " Pale glaucous ; leaves alternate, nearly terete, 

 oblong ; flowers tetramerous, in a loose terminal cyme, white ; stamens 8 ; 

 carpels oblong, abruptly pointed by the short style." Flat Kock, South 

 Carolina (Michaux). Stone Mountain, Georgia (Gray). Stem l'-3' high. 

 Leaves 2" - 3" long. 



S. Rhodiola, DC. Stem simple, erect, very leafy (6' high) ; leaves 

 alternate, lanceolate, serrate ; flowers dioecious, greenish yellow, crowded in 

 a small nearly sessile corymbose cyme ; stamens 8. Mountains of North 

 Carolina ( Canby), and northward. 



TILL-SJA, L. 



Sepals, petals, stamens, and carpels 3 or 4 ; the carpels mostly with a mi- 

 nute scale at the base, 2 -many-seeded. Small annuals, with opposite 

 leaves, and minute axillary flowers. 



T. simplex, Nutt. Stems mostly simple (2' - 3' high), ascending, rooting 

 near the base ; leaves connate, broadly linear, spreading ; flowers nearly ses- 

 sile; petals and 8-10-seeded capsule twice as long as the sepals. Wet 

 places, Mobile (Mohr), and northward. 



T. Drummondi, Torr. & Gray. Stems tufted, dichotomous (!' high) ; 

 leaves oblong-linear, somewhat connate ; flowers pedicelled ; petals reddish ; 

 carpels obtuse, 12 - 20-seeded. East Feliciana, Louisiana ( Carpenter). 



ORDER SAXIFRAGACE^E. 

 HEUCHERA, L. 



H. Rugelii, Shuttlw. Glandular-hirsute, and somewhat viscid ; scape 

 slender (8'-15' high), often leafy; panicle small (2'- 5' long), the slender 

 pedicels nodding ; flowers small ; petals linear-spatulate, twice as long as 

 the calyx-lobes; filaments exserted ; leaves thin, obicular-cordate (3' -6' 

 broad), shortly and broadly 7-9-lobed, with rounded mucronate teeth, 

 pubescent on the nerves beneath ; petioles filiform. Shaded rocks on the 

 mountains of Alabama and North Carolina (Mohr, Rugel). 



