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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

NOTHOLAENA
Plant in soil or granite rock crevices; rhizome short-creeping to ± erect, scales lance-linear. Leaf: stipe generally cylindric, dark brown to black, glabrous to ± scaly; blade 2–4-pinnate, segments generally sessile, ± narrower at base or not. Sporangia: in ± continuous, marginal bands; segment margin recurved, partly covering sporangia, unmodified; spores finely ridged or granular, often ± black.
34 species: generally Mexico, southwestern United States, few in Caribbean, South America. (Greek: false cloak, from leaf blade margin not reflexed as it is in Cheilanthes)
Unabridged references: [Tryon 1956 Contr Gray Herb 179:1–106]

Previous taxon: Cryptogramma cascadensis
Next taxon: Notholaena californica

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Nov 24 2014
Citation for this treatment: [Author of taxon treatment] 2013. Notholaena, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=10418, accessed on Nov 24 2014

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