196 Saxifragaceae fag 























I. Rhizome short, bulblet-bearing, with terminal flower-stalk. — am 
HEMIEVA (p. 197) | 
I]. Rhizome elongated and horizontal, without bulblets, with lateral flow- 4 
er-stalks. 
Js Sepals imbricate; petals persistent; seed winged. 
SULLIVANTIA (p. 197) — 
JJ. Sepals valvate; petals deciduous; seed wingless. BOYKINIA (p. 196) 
DD. Ovary |-celled; placentae parietal or basal. 
K. Sepals 4; petals 0 or 4; stamens 3 or 8. 
L. Flowers solitary in the forks of the upper branches; petals none; stamens 
8; leaves crenate but not lobed, never with young plants where blade 
joins petiole. CHRYSOSPLENIUM (p. 202) 
LL. Flowers in racemes; petals 4; stamens 3; leaves lobed, often with young 
plant where blade joins petiole. LEPTAXIS (p. 201) 
KK. Sepals 5; petals 5; stamens 5 or 10. 
: M. Carpels 3. LITHOPHRAGMA (p. 201) 
MM. Carpels 2. 
N. Flowers in panicles or spikes. HEUuCcHERA (p. 200) 
NN. Flowers in racemes. 
O. Petals entire; carpels very unequal. TIARELLA (p. 199) 
OO. Petals pinnatifid or laciniate; carpels about equal. 
P. Calyx-cup longer than the free calyx-segments; capsule tapering 
into a beak. TELLIMA (p. 201) 
PP. Calyx-cup shorter than the free calyx-segments; capsule abruptly 
beaked or beakless. MITELLA (p. 202) 
LEPTARRHENA 
Perennial. Leaves alternate, evergreen, mostly basal, a few on the flower-stalk; 
blade leathery, toothed, narrowed into petiole-like base. Flowers in thyrsoid-paniculate 
cymes. Calyx-cup flattish, about as long as the lobes; segments 5, erect. Corolla white, 
regular; petals narrow, wider upward, persistent. Stamens 10. Ovary slightly inferior; 
carpels united only at base. Follicles erect except the tips. Seeds produced into a tail 
or erect end. (Gk. leptos=small, arren—male: probably referring to the I-celled an- 
thers.) W.C. (L. amplexifolia.) 
L. pyrolifolia R. Br. 
BOLANDRA 
Perennial, glabrous or glandular-puberulent; stem leafy. Leaf-blade reniform; at 
least the stem-leaves with conspicuous stipules. Flowers in more or less leafy-bracted pan- 
icles. Calyx-tube deeply urn-shaped; segments 5, long-attenuate. Petals purplish, nar- 
rowly subulate-lanceolate, long-attenuate, persistent. Stamens 5, opposite the sepals. Ovary 
superior; placentae axial. Follicles 2, ovate-lanceolate, united below. (Honor of H. N. 
Bolander, an American botanist.) C. (B. californica for our region. ) 4 
B. oregana, Wats. 
BOYKINIA (Therophon) > 
Perennial, glandular-pubescent. Flowers in panicles on lateral leafy shoots. Leaf- | 
blades reniform, variously cleft or lobed, dentate or crenate; stipules none or leafy or 
mere bristles. Calyx-tube campanulate or urn-shaped or turbinate; segments 5, lanceolate 
