138 
Two new Genera of Saxifragaceae, 
By JouHN K. SMALL. 
(PLATEs 256, 257.) 
_ Inthe course of a study of the genus Sazifraga, several species 
now referred to it appear to be erroneously so placed. Repeated 
attempts to retain them where they were originally placed, or to 
transfer them to related genera have proved fruitless, and I confi- 
dently propose the two new genera here to be described. 
Dr. Torrey remarks on Saxifraga Parryi, in the Botany of the 
Mexican Boundary Survey and others elsewhere to the same 
effect, that it is “a remarkable species, with the calyx and habit 
of a small Heuchera, but it is decandrous and the ovary is wholly 
free as well as two-celled.”” I make this species the type of a new 
genus. 
JEPSONIA. 
Slender acaulescent slightly pubescent herbs, perennial by 
corms. Leaves (usually vernal) all basal, suboricular in outline, 
cordate, petioled, slightly lobed and toothed; scapes (usually 
autumnal) wiry, simple or branched above; flowers in terminal 
cymes or cymose panicles; calyx campanulate with a flat base, its 
edge five-toothed ; petals five, inserted just below the sinuses of 
the calyx; stamens ten, inserted on the calyx tube below the 
petals; filaments subulate, the alternate ones longer and slightly 
surpassing the calyx; ovary two-celled, free from and partially 
filling the calyx, its carpels united to about the middle; placenta 
central ; follicles united at the base, tipped by the straight slender 
styles which diverge at an angle of about ninety degrees; stigmas 
peltate; seeds irregular in outline, ribbed and crested, with a 
pinched and curved base ; embyro minute, erect in one end of the 
endosperm, 
Leaves sub-orbicular, broader than long ; calyx-teeth shorter than the tube, 
"J: PARRYE 
Leaves ovate-orbicular, longer than broad; calyx-teeth as long as the tube, or 
longer. 2, J. MALVAEFOLIA, 
I. JEPSONIA Parryi (Torr.). 
Saxifraga Parry: Torr. Bot. Mex. Bound. Surv. 69. p/. 25. 
1859. 
Perennial by an ovoid fleshy corm, scapose, wiry, sparingly — 
pubescent throughout. Leaves.(appearing in the spring) all basal, — 
- ri 
