Isoplexis

Canary foxglove ( Isoplexis canariensis)

As Canary foxgloves ( Isoplexis ) a genus within the family of the plantain family ( Plantaginaceae ) is called. The four species occur exclusively in zentralmakaronesischen on the archipelago.

Description

Vegetative characteristics

The Canary foxgloves are shrubby and evergreen plants ( bushes? ). The leathery leaves are dark green.

Generative features

The flowers are borne in inflorescences aged men. The hermaphrodite flowers are zygomorphic. The petals are orange - brown. The Kronoberlippe is longer than the other types of thimble and more or less upward with them. The lower lip is shorter and dreizipflig.

Occurrence and risk

The genus is native Isoplexis exclusively on the zentralmakaronesischen archipelago, that is in the Canary Islands and Madeira (including the offshore islands of Porto Santo and Deserted Islands ). The species are rarely found in their home and partly also threatened with extinction ( Isoplexis chalcantha ). They are typical elements of the laurel forest region. Isoplexis types of love sunny locations.

Use and health risk

Isoplexis canariensis is sometimes offered as an ornamental plant, but must be kept as a container plant, as all Isoplexis species are not hardy.

Canary foxgloves contain cardiac glycosides, such as Canarigenin or uzarigenin as aglycone. As sugar components occur in particular D -glucose, D -fucose and D- digitoxose in appearance. An extensive therapeutic use, such as in the native foxgloves, is not given solely on the basis of rare occurrence. Canary foxgloves are among the most poisonous plants.

System

Isoplexis ( Lindl. ) Loudon is treated by some authors as a synonym of L. digitalis. Isoplexis is therefore a section within the genus Digitalis. See: C. Brauchler, H. Meimberg & G: Heubl: Molecular Phylogeny of the genera Digitalis. L and Isoplexis ( Lindley ) Loudon ( Veronicaceae ) based on ITS and trnL -F sequences, In: Plant Systematics and Evolution, Volume 248, Issue 1-4, 2004, pp. 111-128.

The genus belongs to the tribe Isoplexis Digital ideae in the family Plantaginaceae and was formerly classified in the family Scrophulariaceae or Veronicaceae.

The four Isoplexis types are:

• Canary foxglove ( Isoplexis canariensis (L.) Loudon ): It occurs on La Palma, La Gomera and Tenerife.
• Canary Dwarf Foxglove ( Isoplexis isabel liana ( Webb) mASF. ): It occurs on Gran Canaria.
• Made Irish Foxglove ( Isoplexis sceptrum ( L. f ) Loudon )
• Canarian mountain foxglove ( Isoplexis chalcantha Svent & O'Shan. . ): It occurs on Gran Canaria.

Pictures

Isoplexis sceptrum