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 2017. Bensoniella oregona, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on October 21, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on October 21, 2017.

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. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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).

View elevation by latitude chart
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.