384 SAXIFRAGACEAE 



11. HEMIEVA Raf. 



Glandular-puberulent perennials, with a very short bulbiferous rootstock and 

 fibrous roots. Blades of basal leaves ternately divided, withcrenate lobes; stem- 

 leaves with more or less developed stipules. Flowers in a corymbiform panicle. 

 Hypanthium campanulate, adnate to the lower half of the ovary. Sepals 5, tri- 

 angular-lanceolate. Petals 5, obovate, short-clawed. Stamens 5, opposite to 

 the sepals, erect, inserted on the outer margin of a thick disk; filaments filiform. 

 Gynoecium half inferior, 2-celled, with axial placentae; styles distinct. 



1. H. ranunculifolia (Hook.) Raf. Stem about 2 dm. high, more or less 

 glandular-pubescent; lower leaf -blades ternately divided to the base, the middle 

 division broadly cuneate, 1-2.5 cm. long, and rounded 3-lobed, the lateral ones 

 oblique and 4-lobed; uppermost leaves sessile, 3-lobed at the apex; hypanthium 

 about 2 mm. long; sepals about 2 mm. long; petals white or ochroleucous. Saxi- 

 fraga ranunculifolia Hook. Wet rocks in the mountains: Alta. — B.C. — Mont. 

 — Ore. Mont. — Subalp. Je-Jl. 



12. SUKSDORFIA A. Gray. 



Slender, glandular-pubescent perennials, with a bulblet-bearing rootstock; 

 flowering shoots axial, leafy. Blades of basal leaves reniform, merely crenate; 

 stem-leaves with stipules. Inflorescence a few-flowered panicle. Hypanthium 

 deeply campanulate or urn-shaped, adnate to the larger portion of the gynoecium. 

 Sepals 5, lanceolate, erect. Petals 5, long-clawed, purple or rose, occasionally 

 lobed, imbricate. Stamens 5, opposite to the sepals; disk obsolete; anthers 

 ahnost sessile. Gynoecium 2-celled, with axial, many-ovuied placentae, almost 

 whoUy inferior; style short; stigma trvmcate. Capsule dehiscent between the 

 styles. 



1. S. violacea A. Gray. Stem 2-3 dm. high, more or less glandular-pubes- 

 cent; leaf -blades 1-3 cm. wide, more or less puberulent; upper stem-leaves 

 subsessile, cuneate, and 1-4-toothed at the apex; hypanthium 2.5 mm. long, in 

 fruit 6-7 mm. long; sepals about 2 mm. long; petals pink, 5-7 mm. long. Wet 

 cliffs near streams: Wash. — Mont. — -Ida. — Ore. Submont. Ap-Je. 



13. SULLIVANTIA T. & G. 



Perennial acaulescent slender herbs, with small rootstocks and scape-like 

 stems. Leaves alternate, mostly basal, only one on the lower part of the stem; 

 blades reniform to orbicular in outline, shallowly lobed and often coarsely toothed, 

 cordate at the base, long-petioled. Flowers in panieled cymes. Hypanthium 

 campanulate, longer than the calyx. Sepals 5, erect. Corolla white or whitish, 

 regular. Petals 5, persistent, clawed. Stamens 5; filaments subulate. Ovary 

 fully half -inferior, the carpels united up to the beaks. Follicles erect, well included 

 in the drooping hypanthium. Seeds winged. 



1. S. Hapemanii (Coult. & Fisch.) Coulter. Stems 1-2 dm. tall, sparingly 

 glandular-pubescent; leaf -blades reniform or orbicular-reniform, 2-8.5 cm. in 

 diameter, rather shallowly lobed, the lobes coarsely toothed; sepals ovate or 

 oblong-ovate, 1.5-2 mm. long; petals 3 mm. long; foUicles 4-5 mm. long. Heu- 

 chera Hapemanii Coult. & Fisch. Boykinia Purpusii Brand. Therofon Purpusii 

 Heller. S. halmicola A. Nels. Rocky places: Wis.^Minn. — 'Wyo. — Colo. 

 Monl. Jl. 



14. THEROPHON Raf. 



Glandular-pubescent perennial herbs, with scaly rootstocks. Flowers per- 

 fect, paniculate, on leafy lateral shoots. Leaf-blades reniform, variously cleft 

 or lobed; stipules usually present. Hypanthium adnate to the lower half of the 

 ovary. Sepals 5, lanceolate or ovate-lanceolate. Petals 5, white, obovate or 

 spatulate, often short-clawed. Stamens 5, with short filaments, opposite to the 

 sepals. Ovary and capsule usually 2-celled, opening between the beaks; styles 

 2, distinct and in fruit forming two divergent beaks. Placentae axial; seeds 

 numerous, with a shining minutely punctate testa. [Boykinia Nutt., not Raf.] 



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