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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
Plant glandular; rhizome scaly; bulblets 0. Leaf: basal and cauline, distal reduced, becoming bract-like; stipules inconspicuous to leaf-like; blade round to ovate, base cordate to reniform, occasionally truncate, obtuse, or tapered, primary lobes 3–many, shallow to deep, teeth sharp-tipped. Inflorescence: ± flat-topped or ± tapered to tip, > 15-flowered, generally 1-sided; bracts sessile to short-petioled, proximal leaf-like. Flower: hypanthium partly fused to ovary; petals often ephemeral; stamens 5; pistil 1, ovary > 1/2-inferior, chambers 2, placentas 2, axile. Fruit: capsule.Key to Boykinia
8 species: North America, Asia. (S. Boykin, Georgia naturalist, 1786–1848) [Gornall & Bohm 1985 Bot J Linn Soc 90:1–71]
Plant 1.5–6(10) dm. Leaf: 6–45 cm; stipules <= 0.4 cm, generally green, distal brown-bristled; petiole 3–30 cm; leaf < 12 cm wide, divided 1/4–1/3 to base, lobes and teeth ± round-sided. Inflorescence: ± tapered to tip; branches occasionally coiled at tip; flowers not crowded. Flower: calyx lobes 1–3 mm, triangular, tapered; petals 3–4 mm, obovate.
2n=14. Shady wet banks; < 1500 m. Northwestern California (except High North Coast Ranges), Cascade Range Foothills, n High Sierra Nevada, Central Coast, San Francisco Bay Area, n Outer South Coast Ranges, Western Transverse Ranges (Santa Monica Mtns); to British Columbia. May–Aug [Online Interchange]
Previous taxon: Boykinia major
Next taxon: Boykinia rotundifolia
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Dec 20 2014
Citation for this treatment: [Author of taxon treatment] 2013. Boykinia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=16007, accessed on Dec 20 2014
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© 2003 Michael Charters
|Geographic subdivisions indicated for the distribution of Boykinia occidentalis|| Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).
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