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Selaginella hansenii

Higher Taxonomy
Family: SelaginellaceaeView Description 

Stem: wiry, generally rooting adventitiously [or not] from downward-growing leafless shoot-like structures (rhizophores), branching variable, generally not fragile when dry. Leaf: many, simple, overlapped, appressed, small, +- scale-like, 1-veined, generally grooved abaxially [or not] nearly to tip, generally +- of 2 kinds ("under-leaves" under main stem, "over-leaves" over it). Cone: paired or 1, terminal, generally 4-sided, fertile leaves not like sterile, generally strongly keeled. Sporangia: 1 per leaf axil, 2 kinds, male (generally more distal in cones, spores many, small), female (spores (1)4, large, generally orange-yellow).
Genera In Family: 1 genus, +- 700 species: worldwide, generally tropics, warm temperate.
Unabridged Note: Despite recent progress in understanding relationships (Zhou et al. 2016 Cladistics 32:360--389; Weststrand & Korall 2016 Amer J Bot 103:2136--2159), future taxonomic changes in the family are likely.
eFlora Treatment Author: Paul Wilson & Thomas J. Rosatti
Scientific Editor: Alan R. Smith, Thomas J. Rosatti, Bruce G. Baldwin.
Genus: SelaginellaView DescriptionDichotomous Key

Common Name: SPIKE-MOSS

Etymology: (Latin: small Selago, ancient name for some Lycopodium) Note: Some cultivated as groundcover, curiosity: Selaginella kraussiana; Selaginella lepidophylla (Hook. & Grev.) Spring, resurrection plant. Hand lens, generally at +- 20×, required for leaves (shape, margin, awn at tip), cones.
Unabridged Note: All native California taxa are in the Rupestrae clade (Weststrand & Korall 2016 Amer J Bot 103:2160--2169), also treated as section Homoeophyllae (Zhou et al. 2015 Taxon 64:1117--1140) or, formerly, the nomenclaturally ambiguous subgenus Tetragonostachys (Jermy 1986 Fern Gazette 13:117--118). Selaginella shared a common ancestor with Isoetes, +- 380 million years ago (Larsén & Rydin 2016 Int J Pl Sci 177:157--174).

Selaginella hansenii Hieron.
Habit: Plant a sprawling mat, loosely spreading at margins where branching +- pinnate; green aging tan then gray, some leaves red, pink-red, or red-streaked. Leaf: 1--4.5 mm, 0.4--0.7 mm wide, not decurrent; under-leaves lance-linear, grading to linear-deltate over-leaves; base glabrous; awn 0.4--1.4 mm, in tufts at stem tips. Cone: Sparse, 4--8 mm.
Ecology: Rocks of outcrops, river gorges, foothill woodland; Elevation: 250--1700 m. Bioregional Distribution: s NCoRI, CaR, SN, ScV (Sutter Buttes), SnJV, n SCoR.
eFlora Treatment Author: Paul Wilson & Thomas J. Rosatti
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botanical illustration including Selaginella hansenii


Citation for this treatment: Paul Wilson & Thomas J. Rosatti 2012, Selaginella hansenii, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on July 22, 2018.

Citation for the whole project: Jepson Flora Project (eds.) 2018, Jepson eFlora,, accessed on July 22, 2018.

Selaginella hansenii
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© 2015 Barry Breckling
Selaginella hansenii
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© 2016 Neal Kramer
Selaginella hansenii
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© 2006 John Game
Selaginella hansenii
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© 2009 Barry Rice
Selaginella hansenii
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© 2015 Barry Breckling
Selaginella hansenii
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© 2016 Julie Kierstead Nelson

More photos of Selaginella hansenii in CalPhotos

Geographic subdivisions for Selaginella hansenii:
s NCoRI, CaR, SN, ScV (Sutter Buttes), SnJV, n SCoR.
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).

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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, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.