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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
Rhizome scaly; bulblets 0. Leaf: basal (occasionally 1 cauline); blade ± ovate to round, base ± cordate, ± lobed, generally toothed. Inflorescence: raceme or spike, ± 1-sided, blooming from base to tip; bracts generally scale-like. Flower: hypanthium saucer-shaped, ± fused to ovary; petals pinnately lobed, not clawed; stamens 5, filaments < anthers; pistil 1, ovary generally > 1/2-inferior, chamber 1, placentas 2, parietal; styles 2, <= 0.3 mm; stigmas 2-lobed. Fruit: capsule, becoming widely dehiscent, forming splash cup. Seed: many, red-brown to black, shiny.Key to Pectiantia
± 13 species: temperate western North America, Japan, Taiwan. (Latin: comb, from petals; opposing, for stamens opposite petals in Pectiantia pentandra)
Plant 1–4 dm. Leaf: petiole generally glabrous; blade 1.5–8 cm wide, ovate, lobes 5–9, teeth sharp. Inflorescence: pedicel 1–4 mm. Flower: hypanthium 3–5 mm wide; petals green, lobes 5–10, generally opposite, linear; stamens opposite petals; stigmas unlobed or each shallowly 2-lobed, ± sessile.
2n=14. Streambanks, wet meadows; 1500–2500 m. Klamath Ranges, High North Coast Ranges, High Cascade Range, High Sierra Nevada, Warner Mountains; to Alaska, Colorado. [Mitella pentandra Hook.] Jun–Aug [Online Interchange]
Previous taxon: Pectiantia ovalis
Next taxon: Saxifraga
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Mar 9 2014
Citation for this treatment: [Author of taxon treatment] 2012. Pectiantia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=36527, accessed on Mar 9 2014
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