136 SAXIFRAGE FAMILT. 



« Flowers very small : stamens and styles protruding. 



H. Amerie&na, Common A. : the only one N. and E. of Penn^, has 

 scapes and loose panicle (2° -3° high) clammy-glandular and often hairy, 

 leaves with rounded lobw, and greenish flowers in early summer. 



H Vill6sa, from Maryland and Kentucky S. along the upper country, is 

 lower, beset with soft often rusty hairs, has deeper-lobed leaves, and very small 

 white or whitish flowers, later in summer. 



* * Flowers larger (the calyx fully |' long), in a narrower panicle, greenish, with 



stamens little if at all protruding : leaves round and slightly 5 - 9-lobed. 



H. hispida. Mountains of Virginia and N. W. Tall (scape 20-4° 

 hieh), usually with spreading hairs ; stamens a little protruding. 



H, pub6scens. From S. Penn. S. Scapes (l°-30 high) and petioles 

 roughish-glandular rather than pubescent ; stamens shorter than the lobes of 

 the calyx. 



9. BOYKINIA. (Named for the late Z)r. Boytin, of Georgia.) y. 



B. aeonitifdlia, occurs only along the Alleghanies from Virginia S. : 

 stem clammy-glandular, bearing 3 or 4 alternate palmately 5-7-cleft and cut 

 leaves and a cyme of rather small white flowers, in summer. There is one very 

 like it in Oregon and California. 



10. SAXIPRAGA, SAXIFRAGE. (Latin name, means rock-breaher ; 

 many species rooting in the clefts of rocks.) Besides the following, there are 

 a number of rare or local wild species. 



* Wild species, with leaves all clustered at the perennial root, the naked scape 



clammy above and bearing many small flowers in a panicle or cyme, the two 

 ovaries united barely at the base, making at length a pair of nearly separate 



S. Virginiensis, Early S. On rocks and moist banks ; with obovate 

 or wedge-spatulate thickish more or less toothed leaves in an open cluster, scape 

 3' -9' high, bearing in early spring white flowers in a dense cluster, which 

 at length opens into a loose panicled cyme ; calyx not half the length of the 

 petals ; pods turning purple. 



S, Pennsylvaniea, Swamp S. In low wet ground N. ; with lance- 

 oblong or oblanceolate obtuse leaves (4' -8' long) obscurely toothed and nar- 

 rowed into a very short broad petiole, scape l°-2° high, bearing small 

 greenish flowers in an oblong cluster, opening with age into a looser panicle (in 

 spring) ; the rcflexed lobes of the calyx as long as the lance-linear petals. 



S. erbsa, Lettuce S. Cold brooks, from Penn. S. along the Alle- 

 ghanies ; the lance-oblong obtuse leaves (8'- 12' long) sharply erosely toothed ; 

 scape l°-3° high, bearing a loose panicle of slender-pedicelled small white 

 flowers (in summer) ; with reflexed sepals as long as the oval petals, and club- 

 shaped filaments. 



« * Exotic species, cult, for ornament : leaves all clustered at the perennial root : 

 ovaries 2, or sometimes 3-4, almost separate, becoming as many nearly dis- 

 tinct pods. 



S. crassifdlia. Thick-leaved S. Cult, from Siberia, very smooth, with 

 fleshy and creeping or prostrate rootstocks, sending up thick roundish-obovate 

 nearly evergreen leaves, 6' - 9' long, and scapes bearing an ample at first com- 

 pact cyme of large bright rose-colored flowers, in early spring. 



S. sarmeut6sa. Beefsteak S., also called Strawberry Geeanium. 

 Cult, from China and Japan as a house-plant, not quite hardy N., rather hairy, 

 with rounded heart-shaped or kidney-shaped and doubly toothed leaves of fleshy 

 texture, purple underneath, green-veined or mottled with white above, on shaggy 

 petioles, from their axils sending off slender strawberry-like runners, by which 

 the plant is multiplied, and scapes bearing a light very open panicle of irregular 

 flowers, with 3 of the petals small rose-pink and yellow-spotted, and 2 much 

 longer and nearly white ones lanceolate and hanging. 



