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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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Perennial herb, in soil or on or among rocks; rhizome creeping to erect, scaly. Leaf: generally all ± alike (or of 2 kinds, fertile, sterile), generally < 50 cm, often < 25 cm; stipe generally thin, wiry, often dark, ×-section with vascular strands generally 1–3, less often many in circle; blade generally pinnate or ± palmate-pinnate (see Adiantum), often >= 2-compound, abaxially often with glands, ± powdery exudate, hairs, or scales; segments round, oblong, fan-shaped, or other, veins generally free. Sporangia: in sori or not, marginal, submarginal, or along veins, covered by recurved, often modified segment margins (false indusia) or not; true indusia 0; spores spheric, sides flat or not, scar with 3 radiating branches.
± 40 genera, 500 species: worldwide, especially dry areas. [Windham 1993 FNANM 2:122–186] California members of Cheilanthes moved to the distantly related Myriopteris; Pellaea breweri to be moved as well, from a to-be-redefined Pellaea; traditional, often untenable limits of genera outside California also being clarified using molecular phylogenetics. —Scientific Editors: Alan R. Smith, Thomas J. Rosatti.
Key to Pteridaceae
Plant in soil or rock crevices; rhizome short-creeping-decumbent, scales lance-elongate, generally dark, with narrow, lighter margin or not. Leaf: ± alike or fertile, sterile ± dissimilar; axes grooved, light to dark brown; blade 3–4-pinnate, ovate-triangular to 5-sided, glabrous, adaxially ± glossy; pinnae long, narrow, tip pointed, sterile. Sporangia: in small clusters or continuous along margin; false indusia scarious, irregularly toothed.Key to Aspidotis
4 species: generally western North America, also eastern Canada, ± dry, mountain areas. (Greek: shield-bearer, from shield-like false indusia in Aspidotis californica)
Leaf: (2)3-pinnate, 15–20(30+) cm, leathery, fertile, sterile ± dissimilar; pinnae pinnately dissected or not, segments linear, ± entire. Sporangia: false indusia continuous along both sides of segment midvein, with many shallow, regular teeth.
2n=60. Slopes, crevices, outcrops, especially serpentine; 100–3400 m. Northwestern California, Cascade Range, Sierra Nevada, Central Western California, Peninsular Ranges; to southwestern Canada, Montana, Wyoming, Utah; also southeastern Can (Gaspé Peninsula). [Online Interchange]
Previous taxon: Aspidotis carlotta-halliae
Next taxon: Astrolepis
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Jan 25 2015
Citation for this treatment: [Author of taxon treatment] 2013. Aspidotis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=14506, accessed on Jan 25 2015
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Gerald and Buff Corsi © 1999 California Academy of Sciences
|Geographic subdivisions indicated for the distribution of Aspidotis densa|| 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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(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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