136 SAXIFRAGE FAMILT. 



* Flowers very small : stamens and styles protruding. 



H. Americana, Common A. : the only one N. and E. of Penn., has 

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

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



H. villbsa, from Maryland and Kenlucky S, along the upper country, is 

 lower, beset with soft often rusty hairs, has deeper-lobed leaves, and very sma'.l 

 white or whitish floweVs, later in summer. 



» * Flowers larger {the calyx fully Ji' long), in^n naiTower panicle, greenish, with 

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



H. hispida. Mountains of Virginia and N. W. Tall (scape 2°-4° 

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



H. pubescens. From S. Penn. S. Scapes (1° -3° high) and petioles 

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

 the calyx. 



9. BOYKINIA. (Named for the late Dr. Boyhin, of Georgia.) "^ 



B. aoonitifdlia, occurs only along the AUeghanies 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. SAXIFRAGA, SAXIFRAGE. (Latin name, means roch-breaker ; 

 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 

 divergent pods. 



S. Virgini6nsis, Early S. On rocks and moist banks ; mth 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. er6sa, Lettuce S. Cold brooks, from Penn. S. along the AUe- 

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

 scape \°-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. crassif61ia, 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. sarment6sa, Beefsteak S., also called StkawberrV Geranium. 

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

 with rounded heart-sha])cd 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 mnltipliod, 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 neai'ly white ones lanceolate and hanging. 



