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Mitellastra caulescens

Higher Taxonomy
Family: SaxifragaceaeView DescriptionDichotomous Key

Common Name: SAXIFRAGE FAMILY
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: MitellastraView Description 


Species In Genus: 1 sp. Etymology: (Latin: small cap, from fruit; star, from flower outline)
eFlora Treatment Author: Michael S. Park & Douglas E. Soltis

Mitellastra caulescens (Nutt.) Howell
NATIVE
Habit: Plant 1.5--4.5 dm; rhizome scaly; bulblets 0. Leaf: basal and 1--few cauline; petiole glabrous to +- hairy; blade 2--7 cm wide, +- round, lobes 3--7, teeth sharp. Inflorescence: blooming from tip to base; pedicel 2--8 mm. Flower: hypanthium 2.5--4 mm wide, saucer-shaped, +- fused to ovary; petals yellow-green, lobes 4--7, alternate, linear; stamens 5, alternate petals; filaments >> anthers, +- 2/3 calyx lobes; pistil 1, ovary > 1/2-inferior, chamber 1, placentas 2, parietal, styles 2, +- 0.2 mm, stigmas unlobed, head-like. Fruit: capsule, becoming widely dehiscent, forming splash cup. Seed: many, red-brown (to black), shiny. Chromosomes: 2n=14.
Ecology: Wet shaded areas; Elevation: < 1700 m. Bioregional Distribution: NW (exc NCoRI); Distribution Outside California: to British Columbia, Montana. Flowering Time: May--Jul
Synonyms: Mitella caulescens Nutt.
eFlora Treatment Author: Michael S. Park & Douglas E. Soltis
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Mitellastra
Next taxon: Ozomelis

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botanical illustration including Mitellastra caulescens

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Citation for this treatment: Michael S. Park & Douglas E. Soltis 2016. Mitellastra caulescens, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=33852, accessed on February 13, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 13, 2016.


Mitellastra caulescens
click for enlargement
© 2014 Dana York
Mitellastra caulescens
click for enlargement
© 2014 Dana York
Mitellastra caulescens
click for enlargement
© 2014 Dana York
Mitellastra caulescens
click for enlargement
© 2014 Dana York
Mitellastra caulescens
click for enlargement
© 2014 Dana York
Mitellastra caulescens
click for enlargement
© 2014 Dana York

More photos of Mitellastra caulescens in CalPhotos


Geographic subdivisions for Mitellastra caulescens:
NW (exc NCoRI);
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.