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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.

 

HYDROCOTYLE MARSH PENNYWORT

Robert E. Preston & Lincoln Constance


Perennial herb, creeping or sprawling, glabrous [hairy]; rhizomes or stem rooting at nodes. Leaf: simple; petiole scarious-stipuled, not sheathing; blade ± round, peltate or not, entire to deeply lobed. Inflorescence: simple umbels, occasionally spikes, open or dense; bracts 0 or inconspicuous; pedicels 0–many, spreading. Flower: calyx lobes 0 or minute; petals obtuse or acute, ± green to ± yellow-white or ± purple, tip not incurved. Fruit: elliptic to round, very compressed side-to-side; ribs ± equal, thread-like, distinct or not; oil tubes 0, fruit wall with individual oil cells; fruit central axis not obvious. Seed: face flat to convex.
± 100 species: worldwide, especially southern hemisphere. (Greek: water cup, apparently from leaf shape) Hydrocotyle moschata G. Forst., Hydrocotyle ranunculoides, and Hydrocotyle sibthorpioides Lam. occasionally reported as lawn weeds.

Key to Hydrocotyle

1. Leaf blade round-reniform, not peltate ..... H. ranunculoides

1' Leaf blade round, peltate

2. Flowers long-pedicelled; inflorescence of open umbels ..... H. umbellata

2' Flowers ± sessile; inflorescence of spikes, flowers whorled ..... H. verticillata

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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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