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ASPLENIACEAE SPLEENWORT FAMILY

Alan R. Smith

Rhizome-scale cells with lateral walls dark brown to ± black, surficial walls clear. Leaf: stipe ×-section with 1 X-shaped or 2 back-to-back C-shaped vascular strands; segment veins generally free. Sporangia: in linear [to oblong] sori along veins; indusia linear, opening away from veins; stalk cells in 1 row; spores elliptic, winged.
1 or 2 genera (most segregates now subsumed in Asplenium), 700 species: worldwide, especially tropics. —Scientific Editor: Thomas J. Rosatti.

ASPLENIUM SPLEENWORT
Plant in soil or on rocks; rhizome generally short-creeping to erect. Leaf: often tufted, generally glabrous; rachis often ± winged; blade simple or 1[many]-pinnate or forked; pinnae often more developed acroscopically, often without obvious midrib. Sporangia: indusia persistent, covering sori when young, later reflexed. (Greek: spleen)

Key to Asplenium

A. viride Huds. GREEN SPLEENWORT
NATIVE
Leaf: 1-pinnate, generally few, clustered, 3–20 cm; stipe 2–5 cm, 0.5–1 mm wide, unwinged, red-brown at base, ± green or straw-colored above, dull; blade generally 8–12 mm wide, linear; pinnae 8–15 pairs, 3–7 mm, 3–6 mm wide, ± rhombic or broadly ovate, generally shallowly crenate on acroscopic and distal margins. Sporangia: sori generally 1–1.5 mm, generally 1–3 pairs per pinna.
2n=72. On rocks in limestone seams in metamorphic rocks; 2050 m. n High Sierra Nevada (eastern side of Sierra Buttes, Sierra Co.); to Alaska, eastern North America, Europe, Asia. [Asplenium trichomanes-ramosum L., nom. rej.] [Online Interchange] {CNPS listed}

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Sep 3 2014
Citation for this treatment: [Author of taxon treatment] 2013. Asplenium, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=14610, accessed on Sep 3 2014

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click for enlargement Asplenium viride
See CalPhotos for additional images
© 2007 Dr. Amadej Trnkoczy

Geographic subdivisions indicated for the distribution of Asplenium viride 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.