SAXIFRAGACEAE 501 
1. Micranthes Virginiénsis ( Michx.) Small. Foliage pubescent. Leaf-blades 2-20 
em. long, ovate to obovate or spatulate, crenate or crenate-dentate, obtuse, each narrowed 
into a winged petiole shorter or longer than the blade: scapes solitary or tufted, 1-4 dm. 
tall, strict: branches of the inflorescence much elongated at maturity : sepals as long as 
the hypanthium, 1.5 mm. long, triangular, or triangular-ovate, sometimes nearly lance- 
late, each terminating in a black gland : corolla white, 5-8 mm. broad: petals nearly equal, 
3.5-6 mm. long, oblong or nearly so: filaments subulate: follicles distinct or nearly so, 
4-5 mm. long, inflated. [Saxifraga Virginiensis Michx. ] 
On banks and rocks, New Brunswick to Minnesota, middle Georgia and Tennessee. Spring. 
2. Micranthes Texàna (Buckl.) Small. Resembling S. Virginiensis, but glabrous, 
at least the inflorescence. Leaf-blades 1-2.5 em. long, ovate or obovate, obtuse, entire or 
shallowly toothed, sessile or short-petioled : scapes 0.5-1.5 dm. tall, sparingly branched 
above: branches of the inflorescence terminating in congested cymules : sepals oblong to 
ovate, slightly shorter than the hypanthium : corolla white, 4-6 mm. broad : petals nearly 
equal, 2-3 mm. long, suborbicular or obovate : filaments subulate: follicles united at the 
base, 3-4 mm. high, slightly surpassing the sepals, the style-beaks not diverging.  [Sazi- 
fraga Texana Buckl. ] 
On hillsides, Texas. Spring. 
3. Micranthes Tennesseénsis Small. Leaf-blades ovate or sometimes suborbicular, 
2-6 cm. long, obtuse or rounded at the apex, but usually terminated by a tooth, coarsely 
crenate-dentate, abruptly narrowed at the base ; petiole winged, longer or shorter than the 
blade: scapes erect or assurgent, 1-2.5 dm. tall: branches of the panicles subtended by 
linear or spatulate bracts: cymules open: sepals triangular-ovate, 1-1.5 mm. long, acute, 
spreading, longer than the hypanthium : corolla white, 8-9 mm. broad : petals lanceolate, 
3.5-4 mm. long, obtuse or slightly notched at the apex, sessile, or nearly so, each with 2 
yellow spots and 2 lateral nerves which arise below the middle and converge at the apex : 
filaments subulate, slightly longer than the sepals: follicles somewhat inflated, 4 mm. long, 
Sma each terminating in a slender divergent style-beak. [Saxifraga Tennessensis 
mall. 
On rocky bluffs of the Tennessee River, Knoxville, Tennessee. Spring. 
. 4. Micranthes Careyàna (A. Gray) Small. Leaf-blades broadly ovate or or- 
bicular-ovate, 1-4 em. long, obtuse, crenate, truncate or subcordate at the base ; petioles 
slender, equalling the blades or thrice exceeding them in length: scapes erect, 1-2 dm. 
tall, slender, paniculately branched above : pedicels filiform : sepals ovate, obtuse, spread- 
ing: corollas white, 5-6 mm. broad: petals twice longer than the sepals, elliptic, faintly 
bimaculate, rather cuneately narrowed at the base: filaments filiform-subulate : follicles 
distinct or nearly so, 3-3.5 mm. long, widely spreading, each terminating in a slender 
style-beak. [Saxifraga Careyana A. Gray.] : 
On cliffs of high mountains, North Carolina and Tennessee. Spring. 
5. Micranthes Grayana (Britton) Small. Leaf-blades 2-12 cm. long, oblong, 
oval or orbicular, crenate with mucronate teeth, truncate at the base or narrowed 
into winged petioles which are usually shorter than the blades: scapes erect, 2-5 dm. 
E. paniculately branched, the branches widely spreading : sepals oblong or ovate-oblong, 
2-2.5 mm. long, reflexed, obtuse, twice longer than the hypanthium : corolla white, 7-9 
ae broad: petals 5, the blades ovate or oblong-ovate, 3-3.5 mm. long, obtuse, strongly 
imaculate, contracted into stout claws: filaments club-shaped : follicles 4-6 mm. long, 
united at the base, at length widely diverging : seeds oblong, 0.7-1 mm. long, strongly 
papillose in lines. [Saxifraga Grayana Britton. ©. Caroliniana A. Gray, not Schleich. ] 
On banks and cliffs in the mountains of Virginia and North Carolina. Summer. 
bus oe micranthidifdlia (Haw.) Small. Leaf-blades oblong or oblanceo- 
ia m. long, coarsely dentate, crenate or sometimes serrate, narrowed into broad 
inged petioles: scapes erect, 2-9 dm. tall, usually solitary, paniculately branched, the 
PER subtended by leaf-like braets : pedicels slender or filiform : sepals oblong-lanceo- 
ie oe much longer than the hypanthium, reflexed : corolla white, 6-7 mm. broad : 
P Rs ong, surpassing the calyx: filaments club-shaped, longer than the petals : follicles 
ell; im. long, united at the base, each terminating in a slender style-beak : seeds oblong- 
Iptic, 1 mm. long, longitudinally ribbed. [Sazifraga erosa Pursh. ] 
In mountain brooks and swamps, Pennsylvania to Georgia and Tennessee. Spring and summer. 
4. SPATULARIA Haw. 
23 Perennial scapose herbs, with short rootstocks and glandular-pubescent foliage. 
Nis ke basal: blades narrow, broadened upward, coarsely or incisely toothed, with petiole- 
ike bases. Flowers perfect, in spreading panicles. Sepals 5, slightly united, recurved at 
