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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.

 

ELATINACEAE WATERWORT FAMILY

Gordon C. Tucker & Evanielis U. Grissom


Annual, short-lived perennial herb, in or near water; roots fibrous, from taproot or not, generally from lower leaf axils also. Stem: generally soft. Leaf: simple, opposite, ± 4-ranked; stipules scarious. Inflorescence: flowers in upper axils, 1 or few in clusters. Flower: small, inconspicuous, radial, bisexual; sepals, petals 2–5, equal in number, generally free; ovary spheric, styles 3–5, short. Fruit: capsule, septicidal, ± spheric, ovoid, or depressed-ovoid, walls thin; chambers 2–5, each several to many-seeded. Seed: small; surface net-like or glossy.
2 genera, 50 species: ± worldwide. [Yang & Tucker 2007 Fl China 13:55–56] —Scientific Editor: Thomas J. Rosatti.
Unabridged references: [Tucker 1986 J Arnold Arbor 67:471–483]

Key to Elatinaceae

1. Plant glandular-hairy; sepals, petals 5; sepals acute, midvein rib-like ..... BERGIA

1' Plant glabrous; sepals, petals 2–4; sepals obtuse, midvein not apparent ..... ELATINE

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