298 SAXIFRAGACEAE 
Petals: fringed. at ‘bortlersy iis Avyha Fes 
Petals mostly absent. Plant aquatic . Chrysosplenium 
Flowers not in clusters, white; scape bearing a single star- 
shaped) flower) 2)... s/h ae PUR ee 0 2 
Leaves opposite 2.) 40% 50s 30%) “oe eee 
Leaves: ‘alternate: ... Sos 4s). ace (SY ok eR ee 
1, SAXIFRAGA, L. 
Herbs, perennial; leaves mostly basal, less frequently opposite and 
scattered along the stem. Stipules none. In all of our species borders of 
leaves furnished with sharp teeth. Flowers generally in loose, or crowded, 
terminal clusters. Petals 5, sepals 5, stamens 10, inserted with the 
petals. Ovary, generally superior to the calyx, 2-lobed above, joining 
below. 
Flowers purple, leaves opposite, over-lapping . .« « « « « « S. oppositifolia 
Flowers yellow, or yellowish-green. 
Leaves altemnate) alone. the: estemy va) 6 oh ene) yeh Ue) lee 
Leaves mostly in a rosette at base. 
Leaves) mostly Jess thanjan “ins Jong) 2 << 3 « « ») «) eubaneoom 
Leaves more than 3 in. long . . « ce « « « Ss pennsyluanica 
Flowers white. 
« ©, Ss (aigonles 
eaves (trilobates tsi te ey ol es) el | sh Vell ell eens) Se Remar 
Leaves 5 to 12 in. long, less than 3} as broad . . . S. micranthidifolia 
Leaves 1 to 3 in. long, about 4 as broad. . . S. virginiensis 
Leaves usually less than an in. long, narrow, with toothed apex S. stellaris 
l. S. oppositifolia, L. PurrLe, ok MounrTaAIN SAXxIFRAGE. Stems in 
tufts, 6 to 8 in. long, creeping. Leaves crowded, overlapping, opposite, 
small rather fleshy 1/12 to 1/6 in. long, oval. Flowers solitary, light 
purple, showy, petals 5-veined. Wet rocks, Mt. Mansfield and Willoughby 
Mountain, Vt., and further north. 
2. §. aizoides, L. (Fig. 4, pl. 59.) Ye~ttow Mountain SAXIFRAGE. 
Stems branched, in tufts, 2 to 6 in. high. Leaves scattered along the 
flowering stem, linear, rather thick and fleshy; 1/3 to 2/3 in. long, with 
occasional stiff hairs along the margin. Flowers yellow, conspicuous. 
In the same location as No. 1. 
3. §. rivularis, L. (Fig. 8, pl. 59.) Atprne Brook SAxrFraAGE. In 
dense tufts, stems creeping, rooting at leaf nodes. Lower leaves kidney- 
shaped with 3 to 5 deep lobes, upper leaves oval or lance-shaped. Flowers 
few (1 to 5), white, + in. broad. Calyx lobes nearly as long as the 
petals. Ovary with two widely diverging tips. Summits of White 
Mountains and north. 
4. §. Aizoon, Jacq. (Fig. 3, pl. 59.) Liverone Saxirrace, Stems 
viscid, hairy, 6 to 10 in. high; leaves in a dense basal rosette, spatula- 
shaped, with sharp white firm teeth at borders. A few small leaves along 
the stem. Flowers in a spreading cluster, white with yellowish spots, about 
} in, broad. Petals twice as long as sepals. Dry rocks, Mt. Mansfield, 
Vt., and northward. 
5. §. virginiensis, Michx. (Tig. 2, pl. 60.) Earty Saxrrrace. Stems 
viscid, growing in tufts on wet rocks and moist places. Leaves mostly 
at base in a rather dense rosette, egg-shaped with blunt teeth at borders. 
