Alluaudia humbertii

Alluaudia humbertii
	Alluaudia humbertii
Systematics
	Eudicotyledons
	Nuclear eudicotyledons
Order :	Clove-like (Caryophyllales)
Family :	Didiereaceae
Genre :	Alluaudia
Type :	Alluaudia humbertii
Scientific name
	Alluaudia humbertii
	Choux

Alluaudia humbertii is a species of the genus Alluaudia in the Didiereaceae family. The specific epithet honors the French botanist and connoisseur of the flora of Madagascar Jean-Henri Humbert (1887–1967).

description

Alluaudia humbertii grows first as a shrub with spreading shoots and later as a 5 to 6 meter high tree with a slender and smooth trunk and a densely branched crown . The individually standing gray thorns are 5 to 10 millimeters long, sometimes up to 23 millimeters long. The leaves , usually appearing in pairs below the thorns, are ovate to obovate and point with the narrow side up. They are 5 to 16 millimeters long and 5 to 10 millimeters wide.

The flowers appear in small zymous inflorescences . The male flowers are greenish in color and about 10 millimeters in diameter, the female flowers are white and 4 to 6 millimeters in diameter. The elongated fruits are 5 millimeters long.

The number of chromosomes is . ${\ displaystyle 2n = 48}$

Distribution and systematics

Alluaudia humbertii is distributed in the south and southwest of Madagascar on silicate soils in the coastal plains.

The first description of Alluaudia humbertii was in 1934 by Pierre Choux (1890-1983).

A synonym of the species is Alluaudia decaryi hort. ex Jacobsen (1954) (nom. inval., ICBN -Article 36.1, 37.1).

literature

DG Rowley : Alluaudia . In: Urs Eggli (Ed.): Succulents Lexicon Volume 2 Dicotyledonous plants (dicotyledons). Ulmer, Stuttgart 2002, ISBN 3-8001-3915-4 , p. 100.

Individual evidence

↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Birkhäuser 2004, ISBN 3-540-00489-0 , p. 112.
↑ Alluaudia humbertii at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
^ In: Mémoires de l'Académie Malgache . Volume 18, 1934, pp. 30-32, pp. 60-61

Web links

Commons : Alluaudia humbertii - collection of images, videos and audio files

[1] Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Birkhäuser 2004, ISBN 3-540-00489-0 , p. 112.

[IPCN-2] Alluaudia humbertii at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis

[3] In: Mémoires de l'Académie Malgache . Volume 18, 1934, pp. 30-32, pp. 60-61