Crassula alata

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Crassula alata
Systematics
Nuclear eudicotyledons
Order : Saxifragales (Saxifragales)
Family : Thick-leaf family (Crassulaceae)
Subfamily : Crassuloideae
Genre : Thick leaf ( Crassula )
Type : Crassula alata
Scientific name
Crassula alata
( Viv. ) A. Berger

Crassula alata is a species of thick leaf ( Crassula ) in the family of thick leaf plants (Crassulaceae).

description

Crassula alata is a small, annual , upright, branched, bare plant that can reach heights of up to 12 centimeters. The winged, thin, stem-round shoots are reddish and have a diameter of up to 0.5 millimeters. The white leaves are sessile. Your lanceolate leaf blade is 3 to 7 millimeters long and 1 to 2 millimeters wide. It is pointed and has a thorn tip. The base of the opposite leaves is a non-sagging sheath up to 0.5 millimeters high.

The inflorescence is racemose, leafy and reduced to two flowers per axilla . The three to four-fold flowers are up to 4 millimeters long peduncles . Their pale green, lanceolate sepals that are fused at the base are up to 1.5 millimeters long and 0.2 millimeters wide. They have white bristles at the top. The membranous, white, narrowly egg-shaped, pointed petals are 0.8 millimeters long and 0.3 millimeters wide. The stamens are up to 0.5 millimeters long, the almost round anthers are yellow. The wrong obovate, up to 0.7 millimeters long carpel is in short stylus contracted. Two seeds are formed per carpel . The yellow-brown, longitudinally ribbed seeds are up to 0.4 millimeters long.

Systematics and distribution

The distribution area of Crassula alata extends from southern Europe to the Ukraine , across the Mediterranean area to north and northeast Africa and the Arabian Peninsula to India .

The first description as Tillaea alata by Domenico Viviani was published in 1830. Anthony Peter Druce and Alwin Berger put the species in 1930 in the genus Crassula . The following subspecies are distinguished:

  • Crassula alata subsp. alata
  • Crassula alata subsp. pharnaceoides (Fish. & CAMey.) Wickens & M.Bywater

proof

literature

  • Ernst Jacobus van Jaarsveld: Crassula alata . In: Urs Eggli (Hrsg.): Succulent lexicon. Crassulaceae (thick leaf family) . Eugen Ulmer, Stuttgart 2003, ISBN 3-8001-3998-7 , pp. 33-34 .

Individual evidence

  1. ↑ Plantarum aegyptiarum Part 4, 1830, p. 16.
  2. ↑ The natural plant families . 2nd edition, Volume 18 (a), 1930, p. 389.

Web links

  • Photos of Crassula alata on Open Herbarium