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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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Perennial 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 n 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] CA 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 generally ± hairy, often glandular; caudex or rhizome generally not woody, generally scaly.Key to Micranthes
Leaf: basal ( cauline); blade linear to (ob) ovate or ± round, base tapered to reniform, margin entire or toothed.
Inflorescence: flowers few to many; bracts scale-like.
Flower: generally radial; hypanthium free or ± fused to ovary; petals 5, white, sometimes with yellow spots at base; stamens 10, filaments flat or variously inflated; pistils 1 ( chambers 2, placentas 2, axile or occasionally proximally axile and distally marginal) or 2, ovary superior to ± inferior (sometimes more superior in fruit), styles free throughout.
Fruit: capsule or 2 follicles.
± 80 species: North America, Eurasia, South America, especially cool temperate n hemisphere. (Latin: small flower) [Elvander 1984 Syst Bot Monogr 3:1–44] Intermediates common between Micranthes integrifolia, Micranthes nidifica, Micranthes fragosa, Micranthes aprica; some may be vegetatively reproducing, sterile hybrids. Study needed.
Unabridged references: [Small & Rydberg 1905 N Am Fl 22:132–150]
Plant 12–35 cm; caudex with short rhizomes, occasionally with bulblets.
Leaf: 2–7 cm; petiole 0.5–4 cm; blade ± ovate, base tapered, entire or minutely toothed.
Inflorescence: generally 1 head-like cluster at tip or sometimes 1–3-branched, lateral branches ± open; pedicel densely glandular.
Flower: sepals generally ± erect to ascending, < petals, ovate; petals 2–4 mm, obovate; filaments ± flat, narrowed toward tip; nectaries disk-like, lobed; pistils 2, ovary >> 1/2-inferior in flower.
Fruit: 2 follicles.
2n=38. Uncommon. Vernally moist meadows; 100–1700 m. Klamath Ranges, Outer North Coast Ranges, Inner North Coast Ranges, Cascade Range Foothills, Sacramento Valley;
Previous taxon: Micranthes howellii
Next taxon: Micranthes marshallii
Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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|Bioregions in which taxon occurs||Red area (if present) is the part of the bioregion lying between the upper and lower elevation limits of the taxon;|
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 have georeferencing or identification issues.
Chart based on elevation range in Manual and elevations and coordinates of CCH records.
Data provided by the participants of the Consortium of California Herbaria.
Note: About half of the CCH records include both elevation and coordinates.
|Map made in collaboration with Scott Loarie. Data provided by the participants of the Consortium of California Herbaria.
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