Jepson eFlora: Taxon page
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Aspidotis densa
DENSE LACE FERN

Higher Taxonomy
Family: PteridaceaeView DescriptionDichotomous Key

Common Name: BRAKE FAMILY
Habit: 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.
Genera In Family: +- 40 genera, 500 species: worldwide, especially dry areas. Note: CA 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 CA also being clarified using molecular phylogenetics.
eFlora Treatment Author: Ruth E.B. Kirkpatrick, Alan R. Smith & Thomas Lemieux, except as noted
Scientific Editor: Alan R. Smith, Thomas J. Rosatti.
Genus: AspidotisView DescriptionDichotomous Key

Habit: 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.
Species In Genus: 4 species: generally western North America, also eastern Canada, +- dry, mountain areas. Etymology: (Greek: shield-bearer, from shield-like false indusia in Aspidotis californica)

Aspidotis densa (Brack.) Lellinger
NATIVE
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. Chromosomes: 2n=60.
Ecology: Slopes, crevices, outcrops, especially serpentine; Elevation: 100--3400 m. Bioregional Distribution: NW, CaR, SN, CW, PR; Distribution Outside California: to southwestern Canada, Montana, Wyoming, Utah; also southeastern Can (Gaspé Peninsula).
Synonyms: Onychium densum Brack.
eFlora Treatment Author: Ruth E.B. Kirkpatrick, Alan R. Smith & Thomas Lemieux
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Citation for this treatment: Ruth E.B. Kirkpatrick, Alan R. Smith & Thomas Lemieux 2016. Aspidotis densa, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=14506, accessed on July 28, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on July 28, 2016.


Aspidotis densa
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© 2015 Aaron Schusteff
Aspidotis densa
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© 2008 Steve Matson
Aspidotis densa
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© 2010 Keir Morse
Aspidotis densa
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© 2015 Aaron Schusteff
Aspidotis densa
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© 2016 Julie Kierstead Nelson
Aspidotis densa
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© 1999 California Academy of Sciences

More photos of Aspidotis densa in CalPhotos


Geographic subdivisions for Aspidotis densa:
NW, CaR, SN, CW, PR;
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.
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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.