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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.

 

ALISMA WATER-PLANTAIN
Perennial herb; roots not septate; flowers bisexual. Leaf: blade linear to ovate, tapered to base or petioled, base tapered to truncate, rounded, or ± lobed. Inflorescence: peduncle generally smooth; pedicels < 45 mm in fruit. Flower: receptacle ± flat; sepals generally 1–4 mm; petals entire to ± cut, white or pink; stamens generally 6; pistils many, free, in 1 whorl on margin of ± flat receptacle. Fruit: body generally 1.5–3 mm, erect, generally strongly compressed, lateral walls opaque to translucent, abaxially thin-ridged; beak < body, generally lateral.
± 9 species: generally northern temperate. (Greek: ancient name) North American species need study.
Unabridged references: [Bjorkqvist 1968 Opera Bot 19:1–138]

Key to Alisma

1. Inflorescence < to ± > leaves; style ± coiled; leaf blade linear to narrowly lanceolate, base tapered; pedicels generally recurved to spreading ..... A. gramineum

1' Inflorescence generally >> leaves; style ± erect, tip recurved; leaf blade generally lanceolate to ovate, base tapered or truncate to ± lobed; pedicels generally ascending to erect

2. Petals pink; leaf blade generally lanceolate, base tapered; fruit lateral walls generally thin, translucent ..... A. lanceolatum

2' Petals white; leaf blade lanceolate to ovate, base truncate to ± lobed; fruit lateral walls thick, opaque ..... A. triviale

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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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