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.
Habit: Plant in soil or rock crevices; rhizome short-creeping, scales variously colored. Leaf: < +- 1 m; stipe cylindric, generally dark red-brown to +- black, shiny, +- scaly at base; blade 2--3-pinnate or +- palmate-pinnate (1st division +- palmate, subsequent ones pinnate), pinnae stalked, fan-shaped or oblong, generally lobed, toothed, or both; axes, blades lacking colored exudate. Sporangia: borne along veins on and covered by highly modified, recurved part of segment margin, appearing to run together at maturity; false indusia +- semicircular to linear; spores generally smooth, tan. Etymology: (Greek: unwettable) Note: Widely cultivated. eFlora Treatment Author: Layne Huiet, Ruth E.B. Kirkpatrick, Alan R. Smith & Thomas Lemieux Reference: [Huiet et al. 2015 PhytoKeys 53:73--81]
Adiantum shastense Huiet & A.R. Sm.
NATIVE Leaf: (18)30--60 cm; stipe red-brown to +- black; blade 2--3-pinnate; pinnules sometimes cut < 1/4 way to base, more common in sterile pinnules, margins at base 90--135°, sterile pinnules more incised than the fertile, dark stalk color passing slightly into base of ultimate segments. Sporangia: sori (and false indusia) 2--7 per pinnule, < 4 mm, with yellowish exudate among sporangia. Chromosomes: 2n=60. Ecology: Shaded forests, rocky or moist banks, northern or eastern exposures; Elevation: < 1600 m. Bioregional Distribution: KR. Note: Described since TJM2. Jepson eFlora Author: Layne Huiet, Ruth E.B. Kirkpatrick, Alan R. Smith & Thomas Lemieux Reference: [Huiet et al. 2015 PhytoKeys 53:73--81] Index of California Plant Names (ICPN; linked via the Jepson Online Interchange) Listed on CNPS Rare Plant Inventory Previous taxon: Adiantum jordanii Next taxon: Argyrochosma
Citation for this treatment: Layne Huiet, Ruth E.B. Kirkpatrick, Alan R. Smith & Thomas Lemieux 2016, Adiantum shastense, in Jepson Flora Project (eds.) Jepson eFlora, Revision 4, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=100476, accessed on April 19, 2024.
Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 19, 2024.
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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).
Data provided by the participants of the
Consortium of California Herbaria.
MAP LEGEND View all CCH records All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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CCH collections by month
Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).
