Jepson eFlora: Key page
Vascular Plants of California
Key to families | Table of families and genera
    Index to accepted names and synonyms:
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Key to Adiantum

View taxon page for Adiantum

(For a list of species in Adiantum, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Leaf ± palmate-pinnate, fan-shaped ..... A. aleuticum

1' Leaf 2–3-pinnate, not fan-shaped

2. Pinnules cut or lobed often > 1/4 way to 2/3 way to base, margins at base converging at 45–90(+)°, sori (and false indusia) without yellowish exudate among sporangia ..... A. capillus-veneris

2' Pinnules cut or lobed often < 1/4 way to base, margins at base converging at 90–180(240)°, sori (and false indusia) with yellowish exudate among sporangia

3. Leaf tissue green; ultimate segments fan-shaped and often semi-crescent-shaped; dark color of stalks ending ± abruptly at base of ultimate segments; mature fronds dying in late spring or early summer, completely dried and largely unseen in late summer, fall, and early winter; CA-FP ..... A. jordanii

3' Leaf tissue green and bluish green; ultimate segments often somewhat rhombus-shaped, dark color of stalks extending into base of ultimate segments; mature fronds persistent and evergreen through summer and into winter and following spring, dead leaves forming thatch at plant base; KR (Shasta Co.) ..... A. shastense



Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, [accessed on ]

Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on .

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