154 SAXIFRAGACEAX. (SAXIFRAGE FAMILY.) 
5. ASTILBE, Hamilton. 
Flowers polygamo-dicecious. Calyx campanulate, 5-parted, nearly free from . 
“the ovary. Petals 5, spatulate, withering-persistent. Stamens 10, exserted. 
Styles 2. Capsule 2-celled, few-seeded. Sced-coat loose and thin. — Perennial 
herbs, with ternately compound leaves, and small yellowish-white flowers, in 
panicled racemes. 
1. A. decandra, Don. — Banks of streams among the mountains of m 
Georgia and North Carolina. June- August. — Stem 39-59 high. Leaves 
twice or thrice ternately compound; the leaflets mostly cordate-ovate, sharply 
lobed and toothed. Stigmas of the sterile flowers and the stamens and petals of 
the fertile ones smaller or rudimentary. 
6. TIARELLA, L. Farsr Mrrre-wort. 
Calyx campanulate, nearly free from the ovary, 5-parted. Petals 5, entire. - 
Stamens 10. Styles 2. Capsule membranaceous, 2-valved, the valves very un- 
equal, 1-celled, few-seeded. Seeds globular, smooth. — Perennial herbs, with 
scape-like stems, chiefly radical and petioled leaves, and small racemose flowers. 
1. T. cordifolia, L. Leaves round-cordate, crenately or acutely lobed 
and toothed, hairy above, pubescent beneath, on long hairy petioles ; scape (8.5. 
12' high) naked, or bearing 1— 9 alternate leaves above the middle; racemes- 
simple or branched, many-flowered ; petals oblong, white or purplish. — Rocky - 
woods and banks, Mississippi, and northward along the mountains. April 
and May. 
7. MITELLA, Toum. Mirre-worr. 
Calyx coherent with the base of the ovary, 5-cleft. Petals 5, pinnatifid. Sta — — 5 
mens 10. Styles 2. Capsule 2-beaked, 1-celled, 2-valved at the apex, many- , 
seeded. Seeds smooth, borne on two parietal placente. — Perennial herbs, with 
broadly cordate and lobed leaves, and small flowers in a terminal raceme. 
1. M. diphylia, L. Hairy ; radical leaves cordate, acute, coarsely ser- 
rate and slightly 3-lobed, on long petioles; stem-leayes 2, opposite, sessile 5 
raceme slender, loosely many-flowered. — Shady woods, on the mountains of 
North Carolina, and northward. May. — Stem 6! - 19! high. Flowers white. 
. 8. CHRYSOSPLENIUM, Towi GorpEN SAXIFRAGE. 
Calyx-tube coherent with the ovary, 4 -= 5-Jobed ; the lobes obtuse and yellow . 
within. Petals none. Stamens 8-10, very short, inserted on a conspicuous - 
disk. Styles 2. Capsule very short, 2-lobed, l-celled, with 2 parietal placent®, | 
2-valved at the apex, many-seeded. — Smooth and succulent herbs, with round- 
ish leaves, and axillary flowers, - ue ee En 
"E "ricanum, Schweinitz. Stemi prostiaté, forking; Maret ml ; 
posite, roundish, slightly lobed ; flowers solitary, greenish. — Cold and sh 
