Jepson eFlora: Taxon page
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Bensoniella oregona

Higher Taxonomy
Family: SaxifragaceaeView DescriptionDichotomous Key

Habit: 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.
Genera In Family: +- 30 genera, 600 species: especially northern temperate, arctic, alpine; some cultivated (Bergenia, Darmera, Heuchera, Saxifraga, Tellima, Tolmiea). Note: California Mitella moved to Mitellastra, Ozomelis, Pectiantia; Suksdorfia ranunculifolia to Hemieva. Parnassia moved to Parnassiaceae.
eFlora Treatment Author: Michael S. Park & Patrick E. Elvander, except as noted
Scientific Editor: Bruce G. Baldwin.
Genus: BensoniellaView Description 

Species In Genus: 1 sp. Etymology: (G.T. Benson, Stanford botanist, 1896--1928)
eFlora Treatment Author: Michael S. Park, Gerald D. Carr & Patrick E. Elvander

Bensoniella oregona (Abrams & Bacig.) C.V. Morton
Habit: 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.
Ecology: Wet meadows, bogs; Elevation: > 750 m. Bioregional Distribution: n NCoRO (Humboldt Co.), expected KR; Distribution Outside California: southwestern Oregon. Flowering Time: May--Jun
Synonyms: Bensonia oregona Abrams & Bacig.
eFlora Treatment Author: Michael S. Park, Gerald D. Carr & Patrick E. Elvander
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

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botanical illustration including Bensoniella oregona


Citation for this treatment: Michael S. Park, Gerald D. Carr & Patrick E. Elvander 2016. Bensoniella oregona, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 29, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on April 29, 2016.

Bensoniella oregona
click for enlargement
© 2010 John Game
Bensoniella oregona
click for enlargement
© 2010 John Game
Bensoniella oregona
click for enlargement
© 2010 John Game
Bensoniella oregona
click for enlargement
© 2010 John Game
Bensoniella oregona
click for enlargement
© 2010 John Game

More photos of Bensoniella oregona in CalPhotos

Geographic subdivisions for Bensoniella oregona:
n NCoRO (Humboldt Co.), expected KR;
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.
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.