170 SAXIFRAGACE^. (SAXIFRAGE FAMILY.) 



ovate, cream-color, often spotted at the base. — Moist rocks, Lab. to N. Yt., 

 L. ^Superior, and northward. (Eu.) 



6 S. Virginiensis, Michx. (Early S.) Low (4 - 9' high) ; leaves oh- 

 ovate or oval-spatulate, narrowed into a broad petiole, crenate-toothed, thickish ; 

 flowers in a clustered cyme, which is at length open and loosely panicled ; lobes 

 of the nearly free calijx erect, not half the length of the ohlonrj obtuse {white) petal s ; 

 follicles united merely at the base, divergent, purplish. — Exposed rocks and 

 dry hillsides; N. Brunswick to Ga., and west to Minn., Ohio, and Tenn. ; 

 common, especially northward. April -June. 



7. S. Pennsylvaniea, L. (Swamp S.) Large (1-2° high) ; leaves oh- 

 lanceolate, ohscureljj toothed (4 - 8' long), narrowed at base into a short and broad 

 petiole ; cymes in a large oblong panicle, at first clustered ; lobes of the nearly 

 free calyx recurved, about the length of the linear-lanreolate (greenish) small 

 petals ; filaments awl -shaped ; follicles at length divergent. — Bogs, N. Eng. 

 to Va., west to Minn, and Iowa. 



8. S. erosa, Pursh. (Lettuce S.) Leaves oblong or oblanceolate, obtuse, 

 sharplij toothed, tapering into a margined petiole (8- 12' long) ; scape slender 

 (1-3° high); panicle elongated, loosely flowered ; pedicels slender ; cali/x re- 

 flexed, entirelg free, nearli/ as long as the oval obtuse {white) petals; Jilaments 

 club-shaped ; follicles nearly separate, diverging, narrow, pointed, 2-3" long. 

 — Cold mountain brooks, Penn. to Va. and N. C. 



9. S. Porbesii, Vasey. Stem stout, 2 - 4° high ; leaves denticulate, oval 

 to elongated oblong (4 - 8' long) ; filaments Jili form ; follicles short, ovate ; other- 

 wise as in the last. — Shaded cliffs, near Makanda, S. 111. {Forbes) ; E. Mo. 

 (Letterinann.) 



-t- ■«- Petals unequal, with claws, vhite, all or some of them with a pair of ijelloio 

 spots near the base; leaves oblong, wedge-shaped or spatulate ; calyx free 

 and refiexed. 



10. S. leucanthemifdlia, Michx. Leaves coarsely toothed or cut, ta- 

 pering into a petiole ; stems (5-18' high) bearing one or more leaves or leafy 

 bracts and a loose, spreading corymbose or paniculate cyme; petals lanceolate, 

 the 3 larger ones with a heart-shaped base and a pair of spots, the 2 smaller 

 with a tapering base and no spots. — Mts. of Va. to N. C. and Ga. 



11. S. Stellaris, L., var. comosa, AVilld. Leaves wedge-shaped, more 

 or less toothed ; scape (4 - 5' high) bearing a small contracted panicle, many 

 or most of the flowers changed into little tufts of green leaves ; petals all Ian 

 ceolafe and tapering into the claw. — Mt. Katahdin, "Maine, north to Lab. and 

 Greenland. (Eu.) 



3. BOYKINIA, Nutt. 



Calyx-tube top-shaped, coherent with the 2-celled and 2-beaked capsule. 

 Stamens 5, as many as the deciduous petals, these mostly couA^olute in the 

 bud. Otherwise as in Saxifraga. — l^erennial herbs, with alternate palmately 

 .5 - 7-lobed or cut petioled leaves, and white flowers in cymes. (Dedicated to 

 the late Dr. Boykin of Georgia.) 



I. B. aconitifdlia, Nutt. Stem glandular (6 - 20' high) ; leaves deeply 

 5 -7-lobed. — Mountains of southwestern Va. to Ga. and Tenn. Julv. 



