saxifragaceyE. (saxikuage family.) 1G9 



or most of the flowers changed into little tufts of preen leaves ; ]>rtnls all lancro- 

 late and laixrini/ into the cluiu. — Mount Katalidiu, Maine (luv. J. Blukc) mid 

 high northward. (Hu.) 



8. BOYKiNIA, Nutt. BovKiMA. 



Calyx-tube toij-shajied, euhereut with the 2-eelled and 2-heaked pod. Sta- 

 mens 5, as many as the deciduous petals, these mostly conyolute in the bud. 

 Otherwise as in Saxil'raga. — I'erennial herbs, with alternate palmately 5 - 7- 

 lobcd or cut pctioled leaves, anil white flowers in cymes. (Dedicated to the 

 late Dr. Boi/lciu of Georgia.) 



1. B. aconitiI61ia, Nutt. Stem glandular (C- 20' high) ; leaves deeply 

 5_7.1obed. — JIuuutaius of S. W. Virginia, and southward. July. 



9. SULLIVANTIA, Torr. & Gray. Slllivaxtia. 



Calyx bcU-shapcd, cohering below only ^tith the base of the ovary, 5-cleft. 

 Petals 5, entire, acutish, withering-]>ersistent. Stamens 5, shorter than the 

 petals. Pod 2-cclled, 2-bcaked, many-seeded, opening between the beaks : the 

 seeds wing-margined, imbricated upwards. — A low and reclined-sprcading per- 

 ennial 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 nearly leafless slender scape (C- 12' long). Peduncles and calyx 

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

 gist who discovered the only species.) 



1. S. Ohidnis, Torr. & Or. {Grai/, Chlorh Bor.-Am.. pf. 6.)— "Limestone 

 cliflTs, Highland County, Ohio, SuUivant : Wisconsin River, Lapham. June. 



10. HEUCHEKA, L. Alumroot. 



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

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

 with 2 parietal many-seeded placcnt.TC, 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. 

 Flowers in small clusters dispo.sed in a prolonged and narrow panicle, greenish 

 or purplish. (Named in honor of John Henri/ llcucha; a. German botanist of 

 the beginning of the 18th century.) 



* Flowrrs smnll, looxely panirhd : slnmrn-f and sli/lrs ergcii'd : calijr r<i]nhir. 



1. H. Vill6sa, Michx. Scapes (I°-.1° high), jietioles, and veins of the 

 acutely 7-0-Iolx'd leaves beneath villous with i-ust;/ lutirs ; calyx 1 V' long ; prtnls 

 spatuhitf -linear, ahout as long as the stumctis, soon twisted. — Rocks, Maryland, 

 Kentucky and !^outhward, in and near the mountains. Aug. - Sept. 



2. H. Americana, L. (Common A LCM-noor.) Scapes (2° -3^ high), 

 Sn.-. i/l(nidu>ar and more or less hirsute with short huirs ; leaves roundish, with 

 short rounded lobce and crcnatc teeth ; calyx broad, 2" long, the spntnlnte intals 

 not lon(jfr than its lobes. — Rocky woodlands, Connecticut to Wisconsin and 

 southward. June. 



GM-8 



