Cressa L.

Alkaliweed (en), Cresse (fr)

Genus

Angiosperms > Solanales > Convolvulaceae

Characteristics

Low, much-branched, grey-pilose, perennial plants, often suffrutescent at the base. Leaves small, sessile, entire. Flowers small, shortly pedicelled or subsessile in the upper leaf-axils, in terminal clusters or spikes; bracteoles 2, small, at the base of the calyx. Sepals 5, subequal, obovate, imbricate, about as long as the corolla-tube, not enlarged in fruit. Corolla regular, funnel-shaped, white or rose; lobes 5, spreading or reflexed, about as long as the tube, pilose outside. Stamens 5, exserted; filaments adnate to the corolla-tube, filiform, glabrous; pollen globular, smooth. Ovary hairy, 2-celled, 4-ovuled; styles 2, exserted, free, filiform, each with a capitate stigma. Capsule exceeding the calyx, opening by valves, usually 1-seeded; seed smooth, glabrous.
More
A much-branched, short-lived, perennial, subshrubby herb. Leaves small, sessile, entire. Flowers small, subsessile in bracteate clusters at the tips of the branchlets. Sepals obovate, subequal, imbricate. Corolla-tube campanulate; lobes ovate, imbricate, spreading. Stamens and styles exserted; filaments filiform. Ovary 2-locular, 4-ovuled. Styles 2, distinct to the base; stigmas large, capitate. Capsule 2–4-valved, usually one-seeded. Seed glabrous and shining, dark brown.
Flowers small, subsessile, aggregaged in bracteate clusters at the ends of the branchlets.
Corolla 5-lobed; tube campanulate; lobes ovate, imbricate in bud, spreading.
Styles 2, exserted, distinct from the base; stigmas large, capitate.
A much-branched, small, short-lived, perennial, subshrub-like herb.
Stamens exserted; filaments filiform, glabrous, anthers oblong.
Sepals 5, obovate, subequal, imbricate, coriaceous.
Capsule 2–4-valved, usually single-seeded.
Seed glabrous and shining, dark brown.
Leaves small, entire, sessile.
Ovary 2-locular, 4-ovuled.
Life form perennial
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Sexuality hermaphrodite
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Environment

Generally in sandy, maritime or saline terrain.
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Hardiness (USDA) 5-12

Usage

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Cultivation

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Images

Cressa unspecified picture

Distribution

Cressa world distribution map, present in Timor-Leste and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:11835-1
WFO ID wfo-4000009685
COL ID 3VNK
BDTFX ID 86243
INPN ID 191253
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Cressa Carpentia

Lower taxons

Cressa nudicaulis Cressa truxillensis Cressa australis Cressa cretica