Directory       News       Site Map       Home
    Jepson eFlora
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.


Rhizome shallowly horizontal or deeply ± vertical, plants spreading or clumped; roots gingery-aromatic. Leaf: from rhizome, generally evergreen; blade cordate to reniform. Inflorescence: flower terminal, at ground level. Flower: generally dark colored; sepals forming tube, persistent; stamens 12, free from style, tips generally appendaged. Fruit: fleshy capsule. Seed: with fleshy appendage, ant-dispersed.
90 species: northern temperate. (Greek: derivation unknown) [Kelly 2001 Syst Bot 26:17–53]

Key to Asarum

1. Leaf blade generally ± white along major veins; rhizomes deep, ± vertical; plants clumped; stamen tip > pollen sacs

2. Calyx tube white inside with red stripes covered with white hairs; leaf margin hairs curved toward leaf tip; stamen tips pale ..... A. hartwegii

2' Calyx tube dark red-maroon inside with scattered dark hairs; leaf margin hairs ± erect-spreading; stamen tips dark ..... A. marmoratum

1' Leaf blade all green; rhizomes near soil surface, horizontal; plants generally spreading; stamen tip < pollen sacs

3. Calyx lobes spreading in flower, long-tapered ..... A. caudatum

3' Calyx lobes strongly reflexed in flower, obtuse to acute or abruptly pointed ..... A. lemmonii


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].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.