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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 hairy, glands few; rhizome scaly; bulblets 0. Leaf: simple or compound, basal and cauline, distal reduced; stipules minute on cauline leaves, membranous, with marginal bristles; blade ovate, base cordate, lobes 3–5, ± deep, or leaflets 3, teeth sharp. Inflorescence: generally raceme-like panicle. Flower: hypanthium minute, free of ovary; petals thread-like; stamens 10; pistil 1, ovary superior, chamber 1, placentas 2, parietal. Fruit: capsule, valves unequal.
2 species: North America, Asia. (Greek: small tiara) [Kern 1966 Madroño 18:152–160]
Plant 15–40 cm. Leaf: stipules on basal leaves < 1 cm, on cauline leaves < 1 mm; petiole > blade. Inflorescence: glandular hairs dense. Flower: calyx lobes 1.5–2.5 mm; petals 3–4 mm. [Online Interchange]Key to Tiarella trifoliata
Previous taxon: Tiarella
Next taxon: Tiarella trifoliata var. trifoliata
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Nov 20 2014
Citation for this treatment: [Author of taxon treatment] 2013. Tiarella, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=46560, accessed on Nov 20 2014
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|Geographic subdivisions indicated for the distribution of Tiarella trifoliata|| 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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