Blackstonia imperfoliata (L. fil.) Samp.

Spice In the field

Family: GENTIANACEAE

Genus: Blackstonia

Sinònims: Blackstonia perfoliata (L.) Huds. subsp. imperfoliata (L.f) Franco et Rocha Afonso

Catalan common name: Centaura groga.

Province distribution: Balearic Islands. Barcelona. Castelló. Tarragona.

Distribution in the islands: Menorca. Formentera.

General distribution (Phytogeography): Mediterranean

IUCN Category: LCLeast concern

Flowering time: JanFebMarAprMayJunJulAugSepOctNovDec

Life-forms: Terophyte.

Habitats: Litoral marshes and riparian. Cultivated fields, path and road sides, disturbed zones. Rocky coastlines. Coastal areas and road sides.

Characteristics: Can be distinguished from the characteristic subspecies as the cauline leaves are attenuated at the base (the widest part of the leaf is above the basal zone) and the calyx segments are trienervate (normally the characteristic subspecies perfoliata are unienervate) and twice as large as the tube.

Observations: Usually found in saline soils.