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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.

 

BACOPA WATER-HYSSOP

Kim R. Kersh & John L. Strother


Annual, ± perennial herb, aquatic or subaquatic. Stem: prostrate to ascending, or floating, generally < 6 dm. Leaf: cauline, opposite, generally < 40 mm, generally narrowly ± obovate to ± round, ± entire. Inflorescence: flowers 1–3 per leaf axil, sessile or pedicelled. Flower: sepals (4)5, unequal; corolla 5-lobed, generally white to pink or blue, throat yellow, occasionally with white; stamens 4; ovary subtended by nectary, stigma weakly 2-lobed. Fruit: loculicidal or septicidal, spheric. Seed: > 30, 0.1–0.3 mm, evenly sculptured with rectangular pits.
± 100 species: tropics, warm temperate. (Presumed to be aboriginal name) [Barrett & Strother 1978 Syst Bot 3:408–419] Bacopa repens (Sw.) Wettst. an historical weed in rice fields, last reported in 1976. Some flowers cleistogamous.

Key to Bacopa

1. Leaf narrowly ± obovate, vein 1; pedicel bractlets 2, near tip ..... B. monnieri

1' Leaf ovate or obovate to ± round, veins > 6, palmate; pedicel bractlets 0

2a. Sepals 4(5), outer narrowly ovate to elliptic, generally ciliate; leaf 10–23 mm, 8–12 mm wide ..... [B. repens]

2a' Sepals 5, outer ovate to ± round, not ciliate; leaf 12–36 mm, 14–20 mm wide

2. Pedicel 15–51 mm, generally >> leaf; corolla 10–14 mm; anthers 1.8–2.8 mm, notably exserted ..... B. eisenii

2' Pedicel 5–18 mm, generally < leaf; corolla 5–8 mm; anthers 0.6–1.3 mm, little, if at all, exserted ..... B. rotundifolia

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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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