Ml SAXTFUACAc K.K. (sAXIFKAGE FAMILY.) 



* Cnliji er/ual-siileil. 



1. H. Americana, L. Scapo k-aHess, f^landular ; leaves creiiately or 

 acutely T-'J-inln-il aixi toothed, the teeth niiuronate ; panicles long, narrow, 

 loosely tlowereil ; ealyx as long iis the wiiite petals, much shorter than the 

 stamens and very slender styles. — Shady rocky jdaces in the middle and 

 u]iper districts. April- May. — Scape 2° -3° hi<^h, sometimes with one or 

 two leaves. Le.aves 2' -4' wide, on j)etioles 4' -12' long. 



2. H. villosa, Michx. Scape hracted or somewhat leafy, and, like the 

 petioles ami lower surface of the leaves, shaggy with long sjtreading rusty- 

 hairs ; leaves sharply ."j-T-loljed and toothed, panicle loose; flowers minute ; 

 petals white, very narrow, about as long as the stamens, styles ehmgated. 

 — Mountains, Alabama to North Carolina. June -July. — Scajte l°-3° 

 high. Leaves 3' - 8' wide. Flowers about a line in length. 



3. H. Curtisii, (iray. Scape and petioles smooth; leaves lightly lolied ; . 

 branches of the jjanide long, racemose, spreading; petals pur]»le ^ sj)atulate 

 lanceolate, scarcely longer tlian the calyx; stamens slightly pubescent. — 

 Buncombe County, North Carolina (Curtis). — Flowers larger than the last. 



4. H. Hugelii, Shuttlw. Glandular-hirsute, and somewhat viscid ; scape 

 slender (8'- 13' high), often leafy; panicle small (2'-5' long), the slender 

 pedicels nodding ; petals linear-spatulate, twice as long as the calyx lobes ; 

 filaments exserted; leaves thin, orbicular cordate (3' -6' broad), shortly and 

 broadly 7 - 9-lobed, with rounded mucronate teeth, pubescent on the nerves 

 beneath ; petioles filiform. — Shaded rocks on tlie mountains of Alabama and 

 North Carolina (Mohr, Eu(jel). 



* * Cill ijx oblique. 



5. H. pubescens, Pur.sh. Glandular-puberulent ; stem (2°) leafy; 

 leaves round- cordate, acutely 5-7-lobed and toothed, with the sinus closed; 

 stipules obtuse, friuged ; flowers nodding ; calyx ovoid, yellowish green, the 

 ovate lobes obtuse ; petals spatulate, white, and, like the smooth stamens and 

 styles, included. — Mountains of North Carolina. June - July. 



6. H. hispida, Fursh. Hir.sute or minutely glan(lular-iiul)e.scent ; leaves 

 5_9.],,l)('<i, the lobes short, rounded, and mucronately toothed; panicle con- 

 tracted ; the short branches few-flowered ; petals broadly spatulate, purple, 

 rather shorter than tlie more or less exserted stamens ; styles at length much 

 exserted. — High mountains of North Carolina. May - June. — Scape 2°-3° 

 high, sometimes smoothish, as well as the petioles. Flowers larger than any 

 of the preceding. 



3. BOYKINIA, Nutt. 



Calyx turbinate, coherent with the ovary, 5-cleft. Petals deciduous. Sta- 

 mens 5, short. Styles 2-3. Capsule 2 - 3-celled, with a central many-seeded 

 placenta, 2-beaked, opening between the beaks. Seeds smooth. — Erect leafy 

 perennial herbs, with alternate round-cordate palmately lobed and toothed 

 leaves, and small flowers in corymbose cymes. 



1. B. aconitifolia, Nutt. Glandular-hairy, or the upper surface of the 

 long-petioled .5 - 7-lol)ed leaves smoothish ; cymes fastigiate, clammy ; flowers 

 secund, white ; teeth of the calyx triangular-ovate. — Mountains, Alabama 

 to North Carolina. June - July. — Stem 1° - 2° high. 



