Vincetoxicum creticum

from Wikipedia, the free encyclopedia
Vincetoxicum creticum
Systematics
Family : Dog poison family (Apocynaceae)
Subfamily : Silk plants (Asclepiadoideae)
Tribe : Asclepiadeae
Sub tribus : Tylophorinae
Genre : Schwalbenwurzen ( Vincetoxicum )
Type : Vincetoxicum creticum
Scientific name
Vincetoxicum creticum
Browicz

Vincetoxicum creticum is a plant from the genus of vincetoxicum ( Vincetoxicum ) in the family of Hundsgiftgewächse (Apocynaceae). She is endemic to Crete .

description

Vincetoxicum creticum is an ascending to upright, perennial stem hemicryptophyte that reaches heights of 20 to 45 centimeters. The whole plant is hairy, loosely frizzy. The central stem leaves measure 35 to 75 × 25 to 40 millimeters and are elliptical-egg-shaped, quite thick, dull to yellow-green and almost sessile.

The partial inflorescences are few-flowered, dense and short-stalked. The crown has a diameter of 6 to 8 millimeters and is matt light yellow. The corolla lobes are bearded inside. The tips of the secondary crown are short-stalked. The fruits are bare, slender and spindle-shaped. They are not inflated at the bottom.

The flowering period extends from June to July.

The number of chromosomes is 2n = 22.

Occurrence

Vincetoxicum creticum is endemic to Crete. For a long time the plant was only known from the Dikti Mountains in the Lasithi regional district , but was found in the Krioneritis mountain range in the Rethymno regional district in 1994 . It grows on stony hedgehog cushion heaths , scree slopes and clay surfaces at altitudes of 1150 to 1700 (rarely up to 2100) meters.

Systematics and history of discovery

The species was first collected on July 8, 1817 by Franz Wilhelm Sieber at the foot of the Dikti Mountains and, based on this collection, was described by Kurt Sprengel in 1825 as Cynanchum luteum . Pierre Edmond Boissier put the species in the synonymy of Vincetoxicum canescens . This was generally followed until 1975, when Kazimierz Browicz recognized the species as independent and gave it the nomen novum Vincetoxicum creticum instead of the unavailable name Vincetoxicum luteum .

Individual evidence

  1. ↑ a b c Ralf Jahn, Peter Schönfelder: Excursion flora for Crete . With contributions by Alfred Mayer and Martin Scheuerer. Eugen Ulmer, Stuttgart (Hohenheim) 1995, ISBN 3-8001-3478-0 , p. 233 .
  2. ↑ a b c d Arne Strid: Vincetoxicum NM Wolf. In Arne Strid, Kit Tan (Ed.): Mountain Flora of Greece. Volume Two . Edinburgh University Press, Edinburgh 1991, ISBN 0-7486-0207-0 , pp. 10 ( limited preview in Google Book search).
  3. ↑ Bertrand de Montmollin: Etude cytotaxonomique de la flore de la Crète. III. Nombres chromosomiques. In: Candollea. Volume 41, No. 2, 1986, pp. 431-439.
  4. ^ Lance Chilton, Nicholas J. Turland: Flora of Crete. A supplement . Marengo Publications, Retford, Nottinghamshire 1997, ISBN 1-900802-45-7 , pp. 13 .
  5. ^ John Fielding, Nicholas J. Turland: Flowers of Crete . Royal Botanic Gardens, Kew, Kew 2005, ISBN 1-84246-079-X , pp. 83-84 .
  6. ^ Franz Wilhelm Sieber: Journey to the island of Crete in the Greek Archipelagus in 1817. Vol. 1 . Friedrich Fleischer, Leipzig & Sorau 1823, p. 401 ( preview in Google Book Search).
  7. ^ Kurt Polycarp Joachim Sprengel: Systema vegetabilium. Editio decima sexta. Volume 1, Libraria Dieterichiana, Göttingen 1824-1825, p. 852 (online).
  8. ^ Pierre Edmond Boissier: Flora Orientalis. Vol. 4 (Coralliflorae & Monochlamydeae), part 1 . Basel / Genève 1875, p. 52 ( online ).
  9. ↑ Kazimierz Browicz: Vincetoxicum canescens (Willd.) Decne and V. tmoleum Boiss. - Systematic problems and geographical distribution. In: Fragmenta Floristica et Geobotanica. Volume 21, No. 3, 1975, p. 263.

Web links