Jepson eFlora
Key to families | Table of families and genera

Key to Adiantum

View taxon page for Adiantum

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; California Floristic Province ..... 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; Klamath Ranges (Shasta Co.) ..... A. shastense

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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