Yellow-wort grows 10–50 cm (3.9–19.7 in) tall, with stiff, branching stems. The leaves are glaucous, opposite and entire, the upper ones perfoliate, being united at the base. It bears terminal cymes of bright yellow, stalked flowers, 1–1.5 cm (0.39–0.59 in) across. The calyx is deeply divided into 6–10 linear lobes or sepals, spirally arranged, free or nearly free from each other at the base and shorter than the corolla. The petals number six to ten and form a short tube. There are six to ten adherent stamens and a two-lobed stigma.[2]
Ecologyedit
This species is found in chalk or limestone turf and on dunes. It flowers from June to October in Britain where it is widespread but not common.[2] Pathogens affecting B. perfoliata include Peronospora chlorae.[3]
blackstonia, perfoliata, more, commonly, known, yellow, wort, species, flowering, plant, family, gentianaceae, found, around, mediterranean, basin, extending, into, northwestern, europe, scientific, classification, kingdom, plantae, clade, tracheophytes, clade. Blackstonia perfoliata or more commonly known as the yellow wort is a species of flowering plant in the family Gentianaceae found around the Mediterranean Basin but extending into northwestern Europe Blackstonia perfoliata Scientific classification Kingdom Plantae Clade Tracheophytes Clade Angiosperms Clade Eudicots Clade Asterids Order Gentianales Family Gentianaceae Genus Blackstonia Species B perfoliata Binomial name Blackstonia perfoliata L Huds Synonyms Chlora perfoliata 1 Description editYellow wort grows 10 50 cm 3 9 19 7 in tall with stiff branching stems The leaves are glaucous opposite and entire the upper ones perfoliate being united at the base It bears terminal cymes of bright yellow stalked flowers 1 1 5 cm 0 39 0 59 in across The calyx is deeply divided into 6 10 linear lobes or sepals spirally arranged free or nearly free from each other at the base and shorter than the corolla The petals number six to ten and form a short tube There are six to ten adherent stamens and a two lobed stigma 2 Ecology editThis species is found in chalk or limestone turf and on dunes It flowers from June to October in Britain where it is widespread but not common 2 Pathogens affecting B perfoliata include Peronospora chlorae 3 nbsp nbsp Capsules and seeds MHNTReferences edit Blackstonia perfoliata L Huds Plants for a future a b McClintock D and Fitter R The Pocket Guide to Wildflowers Collins 1956 Hall G Peronospora chlorae IMI Descriptions of Fungi and Bacteria nbsp This Gentianales related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Blackstonia perfoliata amp oldid 1170034094, wikipedia, wiki, book, books, library,
