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Genista segonnei (Maire) P.E. Gibbs

Adenocarpus segonnei Maire, Cytisus segonnei (Maire) Maire, Teline segonnei (Maire) Raynaud, G. pseudoumbellata Caball.

Shrub up to 1.5 m in height, spinescent, hermaphrodite, highly branched from the base and somewhat intricate, with divaricate stems, not highly foliose. Stems and old branches with brown-blackish bark, fissured longitudinally, turning glabrous, with a rigid spinescent tip. Young branchlets striated-ribbed longitudinally, green, sericeous. Leaves alternate, trifoliolate, with persistent stipules, subsessile or petiolate —petiole sericeous—, with leaflets 5-10 × 2.5-6 mm, less than 5 times longer than wide, subequal or with the central leaflet somewhat larger, obovate or oblong-obovate, flat, attenuated at the base, rounded or acute, and mucronate, green, with some hairs applied at least on the underside. Inflorescence capituliform or umbelliform, axillary, with 2-9 pedicellate flowers, with pedicel up to 2 mm, villous. Calyx c. 8 mm, densely villous, split up to halfway into 2 lips, the upper lip divided up to the base into 2 ovate segments, and the lower lip tridentate, with subulate teeth. Corolla 10-12 mm, papilionoid, yellow, marcescent, with a suborbicular standard, emarginate, sericeous on the dorsal side, longer than the wings and the keel. Androecium monadelphous, with 10 stamens. Ovary villous, and capitate stigma. Pod c. 18 × 6 mm, linear-oblong, compressed, green at first and then turning brownish, densely villous or cottony, with 2-3 seeds. Seeds 2.8-4 mm, ± ovoid or somewhat compressed, smooth, brownish, with an aril.

Flowering:

March to April.

 

Fruiting:

May to July.

Habitat:

Mountainous forests and thickets, on siliceous substrates, between 1,000 and 2,000 m above sea level. In areas with semiarid to subhumid bioclimate, on inframediterranean to mesomediterranean floors.

Distribution:

Endemic to Morocco, on the wettest mountains of the western Anti-Atlas.

Conservation status:

Always a rare species and with a small distribution range; however it is not considered threatened. Currently, it has not been assessed at a global level in the IUCN Red List of Threatened Species. In the Livre Rouge de la flore vasculaire du Maroc (Fennane, 2021) it has been considered as Endangered (EN).

Genista segonnei. 1. Joaquin Molero
Genista segonnei. General aspect and habitat in the Anti Atlas (Morocco). Joaquín Molero.
Genista segonnei. 2. Bernadette Baud. Teline
Genista segonnei. General aspect in bloom. Bernadette Baud. Teline.
Genista segonnei. 3. Joaquin Molero
Genista segonnei. Twigs with leaves and flowers. Joaquín Molero.
Genista segonnei. 4. Ralph Mangelsdorff. Teline
Genista segonnei. Detail of inflorescences. Ralph Mangelsdorff. Teline.
Genista segonnei. 5. Jesús Charco
Genista segonnei. Twigs with leaves and fruits (pods -legumes-). Jesús Charco.
Genista segonnei. 6. Bernadette Baud. Teline
Genista segonnei. Twigs with leaves and fruits (pods -legumes-). Bernadette Baud. Teline.
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