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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- to long-creeping, scales overlapped, narrowly linear, light- to red- or medium-brown, often with dark mid-stripe. Leaf: erect, persistent, < 1 m; stipes ± cylindric, generally dark or red-brown to ± black, ± shiny, glabrous; blade 1–4-pinnate; segments generally stalked, generally free, linear to rounded, lobed or not, often folded lengthwise when dried; veins generally free. Sporangia: in ± continuous, submarginal bands, among a ± white to ± yellow exudate or not; segment margin generally recurved, generally modified; spores tan to light yellow.Key to Pellaea
± 35 species: tropics, temperate, few in Europe, 0 in Asia. (Greek: dusky, from blue-gray leaves) [Kirkpatrick 2007 Syst Bot 32:504–518] Occasionally cultivated; as defined by Tryon (1957), polyphyletic (Kirkpatrick, 2007).
Unabridged references: [Kirkpatrick, R.E.B. 2007. Investigating the monophyly of Pellaea (Pteridaceae) in the context of a phylogenetic analysis of cheilanthoid ferns. Syst Bot 32:504–518; Tryon 1957 Ann Missouri Bot Gard 44(2):125–193]
Unabridged note: Occasionally cultivated. Molecular data suggest Pellaea in the sense of Tryon (1957) is polyphyletic with monophyletic Astrolepis and Pellaea sect. Platyloma, as well as elements of Paragymnopteris and Paraceterach nested within (Kirkpatrick, 2007).
Rhizome short-creeping, many-branched, > 15 cm, 0.5 cm wide; scales light to medium brown, mid-stripe dark. Leaf: clustered, 12–25(35) cm, 1.5–2(3.5) cm wide, blue-green; stipe < 1.5 mm wide; blade 1-pinnate, oblong; pinnae < 2 cm, < 1.5 cm wide, rounded, unlobed, often folded lengthwise. Sporangia: in marginal bands mixed with yellow exudate; segment margin modified, not recurved.
2n=58. Generally granite rock crevices, slopes; 1200–3200 m. High Sierra Nevada; to Oregon, Idaho. Hybrids with Pellaea mucronata (Pellaea ×glaciogena W.H. Wagner et al.) sterile, ± common, central and southern High Sierra Nevada, 1500–2400 m, intermediate between parents (Wagner et al. 1983 Madroño 30:69–83). [Online Interchange]
Previous taxon: Pellaea breweri
Next taxon: Pellaea mucronata
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Jun 30 2015
Citation for this treatment: [Author of taxon treatment] 2013. Pellaea, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=36779, accessed on Jun 30 2015
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|Geographic subdivisions indicated for the distribution of Pellaea bridgesii|| 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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