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Perennial herb from caudex or rhizome, generally ± hairy. Stem: often ± leafy on proximal 1/2, rarely trailing and leafy throughout. Leaf: generally simple, basal and/or cauline, generally alternate, generally petioled; veins ± palmate. Inflorescence: raceme or 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 3, , 5, 8, or 10; pistils 1 (carpels ± fused, ovary lobed, chambers 1 or 2, placentas generally 2(3), axile or parietal or occasionally proximally axile and distally marginal in ovary lobes) or 2 (carpels free, placentas marginal), ovary nearly superior to inferior, occasionally more superior in fruit, styles generally 2(3). Fruit: capsule (generally 2(3)-beaked, valves generally 2(3), generally equal) or 2 follicles. Seed: generally many, small.
± 30 genera, 600 species: especially northern temperate, arctic, alpine; some cultivated (Bergenia, Darmera, Heuchera, Saxifraga, Tellima, Tolmiea). [Soltis et al. 2001 Ann Missouri Bot Gard 88:669–693; Okuyama et al. 2008 Molec Phylogen Evol 46:560–575] California Mitella moved to Mitellastra, Ozomelis, Pectiantia; Suksdorfia ranunculifolia to Hemieva. Parnassia moved to Parnassiaceae. —Scientific Editor: Bruce G. Baldwin.
Unabridged references: [Soltis 1988 Syst Bot 13:64–72]
Key to Saxifragaceae
1 sp. (Greek: like Saxifraga)
Plant 10–25 cm, ± glandular; rhizome thick, woody, branched, scaly; bulblets 0. Leaf: basal and cauline, reduced distally on stem; petiole 1.5–4 cm, base expanded, membranous; blade 1.5–4 cm, obovate, jointed to petiole and falling from it, base tapered, teeth coarse. Inflorescence: panicle, ± open; flowers > 40, crowded near tips; bracts sessile, proximal often leaf-like, becoming linear distally. Flower: hypanthium partly fused to ovary; calyx lobes 2–3 mm, spreading to reflexed, elliptic to ovate; petals 2–3 mm, obovate, white to pink; stamens 10; pistil 1, ovary ± 1/2-inferior, chambers 2, placentas 2, axile, styles generally fused at base, at least in flower. Fruit: capsule. Seed: brown, longitudinally ribbed.
Rock crevices; 1500–3000 m. Klamath Ranges; southwestern Oregon, central Washington. Jul–Sep [Online Interchange]
Previous taxon: Saxifragopsis
Next taxon: Tellima
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Mar 8 2014
Citation for this treatment: [Author of taxon treatment] 2012. Saxifragopsis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=43443, accessed on Mar 8 2014
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