ORDER LIX. — SAXIFRAGACE^E. 325 



Genus III.— HEUCIIK'RA. L. 5—2. 

 (In honor of Professor Heucher, of Witternberg.) 



Calyx 5-parted, campanulate, with obtuse segments. Petals 

 5, entire. Stamens 5. Styles 2. Capsule 1-celled, many- 

 seeded, 2-beaked, dehiscent between the beaks. Seeds oval, 

 hispid. Perennial herbs, with numerous, palmately veined, rad- 

 ical leaves, on long petioles. 



1. H. Ameiuca'na, (L.) Stem somewhat viscid, generally naked. 

 Leaves f — 9-lobed ; lobes rounded, obtuse, dentate ; teeth mueronate, 

 ciliate. Flowers numerous, in loose, elongated panicles, bracteate. 

 Petals spatulate, small. Seeds small, numerous. — White. If. April 

 — May. Rich, damp soils. Common. 1 — 2 feet. Alum-root. 



2. H. caules'cexs, (Pursh.) Scape hairy at the base, 2-leaved or 

 naked. Leaves cordate, 5 — 7-lobed; lobes acute, glabrous, unequally 

 toothed, ciliate. Flowers in slender, loose panicles. Petals Jinear-spat- 

 ulate, about the length of the stamens ; segments of the calyx short, 

 hairy. — White. If. May — June. Mountains. 



3. H. his'pida, (Pursh.) Scape glabrous, 1 — 2-leaved. Leaves ob- 

 tusely 5 — 7-lobed, with broad, mueronate teeth, hispidly ciliate ; upper 

 surface hispid, lower glabrous. Flowers few. Petals unguiculate, 

 broadly spatulate. Stamens exserted. — Violet-purple. If. May— 

 Juue. Mountains. 



Genus IV.— ASTIL'BE. 10—2. (Tiarella of Elliott) 

 (From a, privative, and stilbe, brightness ; opake plants.) 



Calyx campanulate, 5-parted, persistent. Petals 5, inserted 

 on the calyx, spatulate, marcescent. Stamens 10, exserted. 

 Anthers cordate, 2-celled, on subulate filaments. Capsule 2- 

 celled, dehiscing longitudinally along the inside of the carpels, 

 which separate after maturity. Perennial plants, with com- 

 pound leaves ; leaflets serrate. Flowers in crowded panicles, 

 bracteate. 



1. A. pecan dra, (Don.) Stem herbaceous, angular, branching. Leaves 

 biternate ; leaflets cordate, oblique, lobed ; lobes serrate; lower sur- 

 face and petioles glandular, pubescent. Flowers in axillary and termi- 

 nal panicles ; segments of the calyx ovate. Petals linear-spatulate, 

 longer than the calyx Carpels united at the base. — Yellowish-white. 

 If. June — Aug. Mountains. 



Gknus V.— CHRYSOSPLE'NIUM. Tourn. 8—2. 



(From the Greek chruzos, gold, and splen, the spleen, in reference to the color of the 

 flowers and supposed effect on the spleen.) 



Calyx 4-cleft ; segments obtuse, "colored within. Petals 

 none. Stamens 8 — 10 ; filaments short, subulate. Anthers 

 renifbrm, 2-celled. Styles 2. Capsule 1-celled, with 2 parie- 

 tal placentae, cohering to the tube of the calyx. Seeds numer- 

 ous. Herbaceous plants, with fleshy, crenate leaves. 



