Jepson Flora Project: Jepson Interchange    

 
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VERBENACEAE

VERVAIN FAMILY

Dieter H. Wilken

Annual to tree, generally hairy
Leaves cauline, opposite, generally toothed; stipules 0
Inflorescence: raceme, spike, or head, generally elongated in fruit; bract generally 1 per flower
Flower bisexual; calyx generally 4–5-toothed; corolla 4–5-lobed, radial to bilateral, salverform to 2-lipped; stamens 4–5, epipetalous (if 4, generally in unequal pairs); ovary superior, 2- or 4-lobed, generally 2-chambered, style 1, often with 2 unequal lobes, only 1 stigmatic, lateral
Fruit: 2 or 4 nutlets, drupe-like, or capsule
Genera in family: ± 90 genera, ± 1900 species: especially Am tropical. Some cultivated (Clerodendron , Lantana , Verbena , Vitex ); some weedy worldwide (Lantana ); some used for wood (Tectona , teak).

AVICENNIA

RED MANGROVE

Shrub, tree; roots branches spreading, exposed at low tide
Leaves persistent, petioled; blade thick, entire
Inflorescence head-like, clusters terminal; bractlets 3, generally < calyx, outer 1 > inner 2
Flower: sepals 5, fused at base; corolla 4-lobed, radial, rotate; stamens 4, attached at 1 level; ovary generally 1-chambered, ovules generally 4 per chamber, style not lobed, stigma ± spheric, terminal
Fruit: capsule, 2-valved
Species in genus: ± 15 species: temp, subtropical worldwide, generally coastal marshes, lagoons
Etymology: (Avicenna, Persian physician and philosopher, 980–1037)

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