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Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.


Perennial herb; rhizome scaly; caudex short, erect; wood, especially of roots, often yellow. Leaf: 1–few, basal, long-petioled, 1-ternate; leaflets triangular to fan-shaped, bases tapered. Inflorescence: ± scapose, spike, dense; lateral flowers generally unisexual, terminal bisexual. Flower: perianth 0; stamens (8)9(13), anther valves flap-like, curled inward; ovule 1, style 0, stigma ± flat, furrowed. Fruit: achene, curved, furrowed, brown to red-purple.
2 species: western North America, Japan. (Greek: thin mist or obscurity, from inconspicuous flowers)
Unabridged references: [Terabayashi 1981 Bot Mag (Tokyo) 94:141–157]

Key to Achlys

1. Central leaflet (3)6–8(12)-lobed, 7–16 cm, 8–17 cm wide; stamens 4–6 mm; ovary 1.5–2 mm; fruit brown ..... A. californica

1' Central leaflet 3(5)-lobed, 4–11 cm, 4–8 cm wide; stamens 3–4 mm; ovary 1–1.5 mm; fruit red-purple ..... A. triphylla subsp. triphylla


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