Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
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SAXIFRAGACEAE

SAXIFRAGE FAMILY

Patrick E. Elvander

Perennial or subshrub from caudex or rhizome, generally ± hairy
Stem often ± leafy on lower half, rarely trailing and leafy throughout
Leaves generally simple, basal or sometimes cauline, generally alternate, generally petioled; veins ± palmate
Inflorescence: panicle, generally ± scapose
Flower generally bisexual, generally radial; hypanthium free to ± fused to ovary; calyx lobes generally 5; petals generally 5, free, generally clawed, generally white; stamens generally 5 or 10; pistils 2 and simple or 1 and compound (chambers 1–2, placentas 2–4, axile or parietal), ovary superior to inferior, sometimes more superior in fruit, styles generally 2
Fruit: 2 follicles or 2–4-valved capsule
Seeds generally many, small
Genera in family: 40 genera, 600 species: especially n temp, arctic, alpine; some cultivated (Bergenia , Darmera , Heuchera , Saxifraga , Tellima , Tolmiea )
Reference: [Soltis 1988 Syst Bot 13:64–72]

SUKSDORFIA

Caudex scaleless, bearing bulblets
Leaves basal and cauline, reduced and merging into linear bracts upward; petiole base expanded, membranous, entire, ± sheathing, ± stipule-like; blade ovate, base cordate to reniform, primary lobes 3, deep, teeth coarse, round, with sharp tips
Inflorescence: cyme, open or sometimes a few dense clusters
Flower: hypanthium partly fused to ovary; stamens 5; pistil 1, ovary > half inferior, chambers 2, placentas 2, axile
Fruit: capsule
Species in genus: 2 species: w North America
Etymology: (W.N. Suksdorf, WA botanist and collector, 1850–1932)
Reference: [Gornall & Bohm 1985 Bot J Linn Soc 90:1–71]

Native

S. ranunculifolia (Hook.) Engl.


Leaf: blade 1–4 cm wide, ± glabrous
Inflorescence 1–3 dm; hairs yellow-tipped; pedicels generally < 3 mm
Flower: calyx lobes 1–3 mm, elliptic to triangular; petals 2–4 mm, elliptic to obovate
Ecology: Uncommon. Moist rocky slopes
Elevation: 1500–2500 m.
Bioregional distribution: Klamath Ranges, High Cascade Range, n High Sierra Nevada (Plumas Co.)
Distribution outside California: to British Columbia, Montana

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