Alectra rigida (Hiern) Hemsl.

Species

Angiosperms > Lamiales > Orobanchaceae > Alectra

Characteristics

Leaves sessile, all opposite, erect, subappressed, 10–20(30) x 1.5–3 mm., linear-lanceolate or oblong, obtuse, broadly caudate to rounded at base, fine appressed retrorse hirsute especially beneath; margin thickened, bristly with short tubercle-based coarse hairs, 2–3(4) thickened teeth on each side, subprominently 1-nerved.
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Calyx 6.5–7 mm. long, clearly 10-nerved, subglabrous to finely retrorse pubescent especially on nerves; lobes 2.5–3 mm. long, shorter than tube, triangular, obtuse, coarsely hairy on margin.
Flowers in subcompact spike-like racemes at ends of branches, shortly pedicellate, solitary in axils of leaf-like bracts, inflorescence becoming lax at fruiting.
Erect annual herb, 10–50(250) cm. tall; stems slender, erect, simple or branched from about midway or above, hispid with retrorse hairs.
Corolla yellow with purplish venation, to c. 12 mm. long, narrow at base widening into limb of short, rounded, subequal lobes.
Bracts 5–18 x 2–3.75 mm., ovate, acute or obtuse, 1-nerved, leaf-like, entire or with 1 or 2 teeth towards apex.
Filaments all glabrous, anther thecae apiculate.
Bracteoles 3–5 x 0.5–1.75 mm., linear.
Capsule 5–6 x c. 3 mm., oblong-ovoid.
Pedicels 1–1.5 mm. long.
Life form annual
Growth form herb
Growth support parasite
Foliage retention -
Sexuality hermaphrodite
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Environment

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Hardiness (USDA) 9-12

Usage

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Edible -
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Cultivation

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Distribution

Alectra rigida world distribution map, present in Angola, Congo, Ethiopia, Mali, Malawi, Senegal, Tanzania, United Republic of, Zambia, and Zimbabwe

Identifiers

LSID urn:lsid:ipni.org:names:798788-1
WFO ID wfo-0000525429
COL ID BM3K
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Alectra rigida Melasma rigidum Melasma rigida

Lower taxons

Alectra rigida subsp. paludosa