590 SAXIFRAGACEAE 
Ovary 1-celled, superior or half-inferior, with 3 or 4 parietal placentae. 
Styles very short. Stigmas 3 or 4, over the placentae. Fruit a 1-celled 
loculicidal capsule, 3—4-valved at the apex. Seeds numerous, winged, the 
testa loose.—Represented by the following genus: 
1. PARNASSIA L. Perennial herbs with basal or nearly basal leaves. 
Flower terminating the seape.—About 15 species, natives of the north tem 
perate and arctic regions.—Sum.-fall.—GRASSES-O0F-PARNASSUS. meom 
Petals clawless: leaf-blades ovate, elliptic, or orbicular. 
Anthers acute : „petals slightly 5—7-veined. . P. grandifolia. 
P. caroliniana. 
1 
S obtuse: petals strongly many-veined. 2. 
3. P. asarifolia. 
Petals ea eat blades reniform or orbicular-reniform, 
P. grandifolia DC. Plant 3-6 dm. tall: leaf-blades oval or ovate, usually 
subeordat ate, 3—10 cm. long: T a to oe 4—5 mm. long: petals aia 
o oval, 15-20 m rss 4-5 m 
os capsule à Ebor d . em. n s, (oom) 
—Wet soil, various provinces, la. to Tex 
Mo., and Va. 
P. caroliniana Michx. Plant 2—4 dm 
ov ong.—Swamps and dd 
irm pe Plain Fla. to N. C.—Fal 
3. P. eee ey = Plant 2—4 dm. tall 
leaf-blades 4— wide: sepals ovate or 
elliptie, 4—5 es pos petals 15-21 mm. — 
ong; blades ovate to suborbicular: capsule ovoid, 6-11 mm. —(Broo 
PARNASSIA.)—-Wet woods and stony brooks, often in ape le zh pus to 
Appalachian provinces and rarely Coastal Plain, Ga. to A , W. Va. and V 
FawrLy 5. SAXIFRAGACEAE— SAXIFRAGE FAMILY 
Leaves alternate or sometimes opposite: blades simple or 
compound. Flowers perfect or polygamo-dioecious. Calyx of 5, or rarely 
f 4 or more, persistent sepals. Corolla of 5, or rarely of 4 or more, 
petals, or wanting. Androecium of as many ratie as there are sepals, 
or twice as many. Gynoecium of fewer earpels than there are sepals. 
Fruit a capsule, or follieles.—A bout 90 genera and 650 species of wide 
geographie distribution. 
Leaves with simple blades: flowers perfect. Tribe I. SAXIFRAGACEAE. 
Leaves with 3-ternate blades : flowers polygamous. Tribe II, ASTILBEAE. 
I. SAXIFRAGAC 
Placentae parietal, sometimes nearly basal: ae = celled. 
Flowers solitary and axillary to leaf-li ke bracts, or 2-4 in corymbs each with a 
leaf-like bract. 
SE and petals, 5: stamens 10: gynoecium 3-car- 
ary: annuals. 
Sepals, ng peu 4: stamens 4-8: gynoecium 2-car- 
ary: perennials. 2. CHRYSOSPLENIUM. 
Flowers du elongate FACON or panicles. 
Gynoecium of 2, or 3, equal carpels. 
mn 
. LEPUROPETALON. 
Petals pinnately cleft or pinnatifid. 3. MITELLA. 
Petals entire or toothed. 4. HEUCHERA. 
Gynoecium of 2 very unequal carpels. 5. TIARELLA. 
