SAXIFRAGACEX. (SAXIFRAGE FAMILY.) 153 
3. BOYKINIA, Nutt. 
Calyx turbinate, coherent with the ovary, 5-cleft. Petals deciduous. Sta- 
mens 5, short, Styles 2-3. Capsule 2- 3-celled, with a central many-seeded . 
placenta, 2-beaked, opening between the beaks. Seeds smooth. — Erect leafy 
perennial herbs, with alternate round-cordate palmately lobed and toothed leaves, 
and small flowers in corymbose cymes. 
1. B. aconitifolia, Nutt. Glandular-hairy, or the upper surface of the 
long-petioled 5 —7-lobed leaves smoothish; cymes fastigiate, clammy; flowers 
secund, white; teeth of the calyx triangular-ovate. — Mountains of Georgia, 
North Carolina, and Tennessee. June and July. — Stem 1°- 2° high, 
4. SAXIFRAGA, L. SAXIFRAGE. 
Calyx free, or cohering with the base of the ovary, deeply 5-cleft. Petals 5, 
commonly deciduous. Stamens 10. Styles 2. Capsule 2-celled, 2-beaked, 
opening between the beaks. Seeds numerous, smooth. — Lowest leaves clus- 
tered. 
* Stems leafy. 
1. S. leueanthemifolia, Michx. Hairy and clammy ; leaves spatulate, 
coarsely toothed, tapering into a long winged petiole; the upper ones linear ; 
panicle diffuse; petals clawed, unequal, white, the 3 larger ones spotted with - 
yellow.— Mountains of North Carolina. July.— Stem 10'—20' high. 4 
Stems naked, scape-like. 
2. S. erosa, Pursh. Leaves oblong, tapering to the base, sharply toothed; ; 
scape clammy-pubescent ; panicle long, slender, loosely flowered ; sepals reflexed, 
nearly as long as the oval white petals; stigmas sessile.— Shady banks of 
streams on the mountains of North Carolina, and northward. July.— Scape 
1?-3? high. Leaves 8'— 12! long. 
3. S. Virginiensis, Michx. Pubescent ; leaves somewhat fleshy, obo- 
vate, erenately toothed ; scape clammy ; panicle cymose, dense-flowered ; sepals 
erect, not half as long as the oblong obtuse white petals; styles short. — Rocks 
ee mountains of Georgia, and northward. April and May. — Scape 4! - 12! 
4. S. Careyana, Gray. Smooth or pubescent; leaves broadly ovate, cre- 
pes or sharply toothed, abruptly contracted into a slender petiole ; seape slen- - 
der; panicle loosely flowered ; sepals spreading, half as long as the lanceolate- - 
oblong, white, faintly spotted petals; filaments filiform. — Moist shady rocks, on - 
the high mountains of North Carolina. June.— Plant 6' high. | 
5. S. Caroliniana, Gray. Glandularpubescent; leaves all radical, del- 
toid or ovate, coarsely toothed, abruptly contracted into a margined petiole; 
bets of the senpe few panicle diffuse; petals ovate, white, with 2 pale spots —— as 
the middle, twice the length of the reflexed sepals; filaments club-shaped ; 
or ed free from the calyx, at length widaly epeending. — Dangi : 
