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SAXIFRAGACEAE SAXIFRAGE FAMILY

Michael S. Park & Patrick E. Elvander, except as noted

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, [4], 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

BENSONIELLA

Michael S. Park, Gerald D. Carr & Patrick E. Elvander


1 sp. (G.T. Benson, Stanford botanist, 1896–1928) [Abrams & Bacigalupi 1929 Contr Dudley Herb 1:95]

B. oregona (Abrams & Bacig.) C.V. Morton BENSONIELLA
NATIVE
Plant 20–40 cm; rhizome scaly; bulblets 0. Leaf: basal; petiole 2–15 cm, hairs dense, long, brown; blade 4–20 cm, round-ovate, base cordate, unevenly crenate, ± glabrous adaxially, veins hairy abaxially. Inflorescence: spike-like raceme, glandular; bracts 0; pedicel < 1 mm. Flower: strongly bilateral, hypanthium free of ovary; calyx lobes 1.5–2.5 mm, obovate; petals 2, alternate upper sepals, > calyx lobes, narrowly awl-like, recurved; stamens 5, opposite and > calyx lobes; pistil 1, ovary superior, chamber 1, placentas 2, parietal, styles 1.5–2.5 mm, stigmas ± unlobed, disk-like to head-like. Fruit: capsule, opening before seeds mature, becoming widely dehiscent, forming splash cup. Seed: red-brown to black.
Wet meadows, bogs; > 750 m. n Outer North Coast Ranges (Humboldt Co.), expected Klamath Ranges; southwestern Oregon. May–Jun [Online Interchange] {CNPS list}

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Sep 30 2014
Citation for this treatment: [Author of taxon treatment] 2013. Bensoniella, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=15571, accessed on Sep 30 2014

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click for enlargement Bensoniella oregona
See CalPhotos for additional images
© 2003 Norman Jensen

Geographic subdivisions indicated for the distribution of Bensoniella oregona 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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map of distribution 1
(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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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.