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PTERIDACEAE BRAKE FAMILY

Ruth E.B. Kirkpatrick, Alan R. Smith & Thomas Lemieux, except as noted

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] Definition of Cheilanthes, related genera problematic; traditional limits often untenable. —Scientific Editors: Alan R. Smith, Thomas J. Rosatti.

Key to Pteridaceae

ASPIDOTIS
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.
4 species: generally western North America, also eastern Canada, ± dry, mountain areas. (Greek: shield-bearer, from shield-like false indusia in Aspidotis californica)

Key to Aspidotis

A. carlotta-halliae (W.H. Wagner & E.F. Gilbert) Lellinger CARLOTTA HALL'S LACE FERN
NATIVE
Leaf: 3-pinnate, 8–15(25) cm, leathery; pinnae pinnately dissected, segments narrowly lanceolate to triangular, teeth few. Sporangia: false indusia ± as wide as or wider than long, generally fused at bases, 3–5(7) per segment, with many coarse or deep, irregular teeth or lobes.
2n=120. Generally serpentine slopes, crevices, outcrops; 100–1400 m. Central Western California. Fertile hybrid between Aspidotis californica and Aspidotis densa; sometimes backcrosses. [Online Interchange] {CNPS list}

Previous taxon: Aspidotis californica
Next taxon: Aspidotis densa

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Apr 23 2014
Citation for this treatment: [Author of taxon treatment] 2012. Aspidotis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=14505, accessed on Apr 23 2014

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click for enlargement Aspidotis carlotta-halliae
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2011 Neal Kramer

Bioregions in which Aspidotis carlotta-halliae occurs 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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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.