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Vascular Plants of California
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Micranthes nidifica


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: MicranthesView DescriptionDichotomous Key


Common Name: SAXIFRAGE
Habit: Plant generally +- hairy, often glandular; caudex or rhizome generally not woody, generally scaly. Leaf: basal (cauline); blade linear to (ob)ovate or +- round, base tapered to reniform, margin entire or toothed. Inflorescence: flowers few to many; bracts scale-like. Flower: generally radial; hypanthium free or +- fused to ovary; petals 5, white, sometimes with yellow spots at base; stamens 10, filaments flat or variously inflated; pistils 1 (chambers 2, placentas 2, axile or occasionally proximally axile and distally marginal) or 2, ovary superior to +- inferior (sometimes more superior in fruit), styles free throughout. Fruit: capsule or 2 follicles.
Species In Genus: +- 80 species: North America, Eurasia, South America, especially cool temperate northern hemisphere. Etymology: (Latin: small flower) Note: Intermediates common between Micranthes integrifolia, Micranthes nidifica, Micranthes fragosa, Micranthes aprica; some may be vegetatively reproducing, sterile hybrids. Study needed.
eFlora Treatment Author: Michael S. Park
Reference: Elvander 1984 Syst Bot Monogr 3:1--44
Unabridged Reference: Small & Rydberg 1905 N Am Fl 22:132--150
Micranthes nidifica (Greene) Small
NATIVE
Habit: Plant 10--50 cm; caudex with rhizomes and generally bulblets. Leaf: 3--10 cm; petiole 1.5--5 cm; blade ovate, base generally tapered, entire or minutely toothed. Inflorescence: generally open between +- head-like clusters. Flower: sepals +- reflexed, <= petals, triangular to ovate; petals 1--2 mm, narrowly elliptic to round; filaments +- flat, narrowed near tip; nectaries disk-like, lobed; pistils 2, ovary > 1/2-inferior in flower. Fruit: 2 follicles. Chromosomes: 2n=38.
Ecology: Open wet meadows, slopes; Elevation: (1000)1800--3500 m. Bioregional Distribution: KR, NCoRO (Buck Mtn, Humboldt Co.), SNH, MP; Distribution Outside California: to British Columbia, Montana, Nevada. Flowering Time: May--Aug Note: Variable. Intergrades with Micranthes integrifolia and Micranthes fragosa in KR, CaR, MP. Plants in SNH with open inflorescence that are similar to Micranthes californica and Micranthes fragosa may be distinct (Micranthes montana Small).
Synonyms: Saxifraga nidifica Greene var. nidifica
Jepson eFlora Author: Michael S. Park
Reference: Elvander 1984 Syst Bot Monogr 3:1--44
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Citation for this treatment: Michael S. Park 2012, Micranthes nidifica, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=91948, accessed on October 18, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on October 18, 2019.

Micranthes nidifica
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© 2015 Barry Breckling
Micranthes nidifica
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© 2006 George W. Hartwell
Micranthes nidifica
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© 2008 Aaron Schusteff
Micranthes nidifica
click for enlargement
© 2006 George W. Hartwell
Micranthes nidifica
click for enlargement
© 2015 Barry Breckling
Micranthes nidifica
click for enlargement
© 2008 Aaron Schusteff

More photos of Micranthes nidifica in CalPhotos



Geographic subdivisions for Micranthes nidifica:
KR, NCoRO (Buck Mtn, Humboldt Co.), SNH, MP
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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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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.