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Published In: Diagnoses Plantarum Orientalium Novarum, ser. 1 3: 12. 1843. (Diagn. Pl. Orient., ser. 1,) Name publication detail

Project Name Data (Last Modified On 7/15/2012)
Acceptance : Accepted
Project data     (Last Modified On 9/17/2015)
Area distribution:

One species, Saharo-Arabian.


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Annual herbs. Stems rigid, branched. Leaves opposite, fleshy, terete-linear; stipules scarious. Heads 4-7-flowered, spherical, becoming detached from plant when ripe together with the short, jointed peduncle. Floral leaves united with flowers, indurated, spiny in fruit. Calyx cup-shaped at base, adnate to bracts; lobes 5, hooded and sub-spinescent. Petals O. Stamens 2-5, short, inserted at the discoid margin of calyx tube. Ovary adnate at base to calyx tube, free above, 1-celled, 1-ovuled; ovule suspended from basal funicle; style 2-fid into 2 somewhat recurved stigmas. Urticle membranous, adnate to calyx tube, irregularly lacerate at apex. Seeds somewhat compressed, ovoid, with annular embryo.    


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