SAXIFRAGACEAE, 85 
perfect polypetalous white flowers terminating the branchlets; 
and half-inferior pointed ovoid many-seeded capsules dehiscing 
part-way from the top. 
Leaves ovate to oblong, rough, often 3-nerved, F, rupicola, 
! 
JAMESIA, 
Deciduous shrubs with flaking bark; rather slender roundish 
twigs; rather large rounded continuous brownish pith; opposite 
low narrow U-shaped leaf-scars with 3 bundle-traces; no stipule- 
scars; simple rather small leaves with their dilated petioles 
meeting around the stem; perfect polypetalous moderately small 
white flowers in small terminal clusters; and ovoid beaked 
small-seeded inferior capsules. 
Leaves ovate, serrate, woolly beneath. J. americana. 
Rises. Currant. Gooseberry. 
Deciduous often prickly shrubs with soft brownish wood 
with minute ducts in more or less evident tangential rows and 
rather heavy medullary rays; terete or somewhat angled mod- 
erate twigs; roundish continuous colored pith; alternate trans- 
verse or openly U-shaped somewhat raised leaf-scars with 3 
bundle-traces; no stipule-scars; ovate or round somewhat lobed 
and toothed moderate or small leaves; small perfect polypetalous 
flowers, with cup- or salver-shaped calyx, clustered or racemed 
from the axils; and small inferior several-seeded berries. 
1. Leaves with prominent sessile resin-glands. R. americanum. 
Leaves without resin-glands. 2. 
2. Leaves truncate or cuneate at base: calyx-tube long 
and slender. (Golden Currants). 3. 
Leaves not cuneate: calyx-tube shorter. 4. 
3. Calyx-tube twice as long as sepals. R. odoratum. 
Calyx-tube little longer than sepals. R. aureum. 
4. Prickly at least at the nodes: leaves pubescent. 5. 
Stems not prickly: leaves glabrescent. 7. 
. Petioles pubescent and also with gland-tipped hairs: 
fruit usually prickly. R. Cynosbati. 
Petioles gray-pubescent, scarcely glandular. 5. 
un 
