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Genus Plagiobothrys Family Boraginaceae

Description: Annual herbs.

Leaves opposite in the rosette, usually with a sheathing base, becoming alternate and sessile along stems.

Inflorescence terminal, of elongated scorpioid cymes, bracteate; flowers widely spaced, pedicellate. Sepals fused at the base or in the lower half. Corolla actinomorphic, cylindrical, glabrous. Stamens included; anthers subsessile, lacking an appendage. Ovary 4-lobed; style short; stigma capitate.

Fruit of 2–4 mericarps splitting from a conical gynobase.


Distribution and occurrence: World: c. 100 species, mostly America. Australia: 5 species (4 species endemic, 1 species naturalised), N.S.W., Vic., S.A., W.A.

Text by Peter G. Wilson
Taxon concept:

 Key to the species 
1Sepals 5–8, becoming thickened and twisted or recurved in fruitPlagiobothrys plurisepaleus
Sepals 5, not thickened, remaining erect in fruit2
2Sepals barely fused at the base; mericarps coarsely and irregularly reticulatePlagiobothrys elachanthus
Sepals fused for about one-third of their length; mericarps regularly reticulate
                       Back to 1
Plagiobothrys canescens

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