144 SAXIFRAGACE^. (SAXIFRAGE ifAMILY.) 



1. B. aconitifolia, Nutt. Stem glandular (6' -20' high); leaves deep- 

 ly 5 - 7-lobed. — Mouutains of S. W. Virginia, and southward. July. 



4. SlJIiL,ITANTIA, Torr. & Gray. Sullivantia. 



Calyx bell-shaped, cohering below only with the base of the ovary, 5-eleft. 

 Petals 5, entire, acutish, withering-persistent. Stamens 5, shorter than the pet- 

 als. Pod 2-celled, 2-beaked, many-seeded, opening between the beaks : the 

 seeds wing-margined, imbricated upwards. — A low and roclined-spreading pe- 

 rennial herb, with rounded and cut-toothed, or slightly lobed, smooth leaves, on 

 slender petioles, and small white flowers in a branched loosely cymose panicle, 

 raised on a neai'ly leafless slender scape (6' -12' long). Peduncles and calyx 

 glandular : pedicels recurved in fruit. (Dedicated to the distinguished botanist 

 who discovered the only species. 



I. S. Ohionls, Torr. & Gr. (Gray,ChlorisBar.-Am.,pl.&.) Limestone 

 cliffs. Highland County, Ohio. June. 



5. HEtrCHERA, L. Alum-koot. 



Calyx bell-shaped ; the tube cohering at the base with the ovary, 5-cleft. Pet- 

 als 5, spatulate, small, entire. Stamens 5. Styles 2, slender. Pod 1-celIed, 

 with 2 parietal many-seeded placentse, 2-beaked, opening between the beaks. 

 Seeds oval, with a rough and close seed-coat. — Perennials, with the round 

 heart-shaped leaves principally from the rootstock ; those on the scapes, if any, 

 alternate. Petioles with dilated margins or adherent stipules at their base, 

 riowers in small clusters disposed in a prolonged and narrow panicle, greenish 

 or purplish. (Named in honor of Heucher, an early German botanist.) 



# Flowers small, boselij panicled : stamens and styles exserted : calyx regular. 



1. H. villOSR, Miclix. Scapes (1° -3° high), petioles, and veins of the 

 acutely 7-9-lobed leaves beneath villous with rusty hairs; calyx Ij" long; petals 

 spatvlate-linear, about as long as the stamens, soon twisted. — Rocks, Marj'land, 

 Kentucky, and southward, in and near the mountains. July, Aug. 



2. H. Americana, L. (Common Alum-eoot.) Scapes (2°-3° high) 

 &c. glandular and more or less hirsute with short hains; leaves roundish, with 

 short rounded lobes and erenate teeth ; calyx broad, 2" long, the spatulate petals 

 not longer than its lobes. — Eocky woodlands, Connecticut to "Wisconsin and 

 southward. June. 



# # Flowers larger: calyx (3" -4" hng) more or less oblique: stamens short: panicle 

 very narrow : leaves rounded, slightli/ 5 - 9-lobed. 



3. H. Ilispida, Pursh. Hispid or hirsute with long spreading hairs (oc- 

 casionally almost glabrous), scarcely glandular; stamens soon exserted, longer than 

 the spatulate petals. (H. Eicliardsonii, E. B?-. )— Mountains of Virginia. Also 

 Illinois (Dr. Mead) and northwestvvard. May - July. — Scapes 2°-4° high. 



4. H. pubcscens, Pm-sh. Scape (l°-3° high), &c. gramdar-pnbescent 

 or glandular above, not haiiy, below often glabrous, as are usually tlic rounded 

 loaves ; stamens shorter than the lobes of the calyx and the spatulate petals. — 

 Mountains of Pcnn. to Virginia and Kentucky. June, July. 



