Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
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SAXIFRAGACEAE

SAXIFRAGE FAMILY

Patrick E. Elvander

Perennial or subshrub from caudex or rhizome, generally ± hairy
Stem often ± leafy on lower half, rarely trailing and leafy throughout
Leaves generally simple, basal or sometimes cauline, generally alternate, generally petioled; veins ± palmate
Inflorescence: 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 generally 5 or 10; pistils 2 and simple or 1 and compound (chambers 1–2, placentas 2–4, axile or parietal), ovary superior to inferior, sometimes more superior in fruit, styles generally 2
Fruit: 2 follicles or 2–4-valved capsule
Seeds generally many, small
Genera in family: 40 genera, 600 species: especially n temp, arctic, alpine; some cultivated (Bergenia , Darmera , Heuchera , Saxifraga , Tellima , Tolmiea )
Reference: [Soltis 1988 Syst Bot 13:64–72]

MITELLA

BISHOP'S CAP

Rhizome scaly; bulblets 0
Leaves basal, sometimes a few cauline or arising from rhizome; blade ovate to round, base ± cordate, ± lobed, generally toothed
Inflorescence: raceme or spike, ± 1-sided; bracts generally scale-like
Flower: hypanthium ± fused to ovary; petals 5, pinnately lobed, not clawed; stamens generally 5; pistil 1, ovary generally > half inferior, chamber 1, placentas 2, parietal
Fruit: capsule, ± circumscissile
Species in genus: 12 species: temp to arctic North America, Asia
Etymology: (Latin: small cap, from fruit)

Native

M. trifida Graham


Leaves basal; petiole glabrous to sometimes sparsely hairy; blade 2–8 cm wide, ± round, lobes 5–7, shallow, teeth generally round
Inflorescence 1.5–4.5 dm, blooming bottom to top; pedicels 0.5–2 mm
Flower: hypanthium 2.5–3.5 mm wide, cup-shaped; petals white or ± purple, lobes 3, at tip, elliptic; stamens alternate petals; styles unlobed
Ecology: Uncommon. Wet shaded slopes
Elevation: 900–2000 m.
Bioregional distribution: Klamath Ranges, Outer North Coast Ranges
Distribution outside California: to British Columbia, Alberta
Horticultural information: IRR, DRN: 4, 5, 17 &SHD: 2, 3, 6, 14, 15, 16.

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