Cuscuta planiflora

Cuscuta planiflora
	Cuscuta planiflora , spherical inflorescence
Systematics
	Asterids
	Euasterids I
Order :	Nightshade (Solanales)
Family :	Bindweed family (Convolvulaceae)
Genre :	Silk ( cuscuta )
Type :	Cuscuta planiflora
Scientific name
	Cuscuta planiflora
	Ten.

Cuscuta planiflora (on Tenerife)

Cuscuta planiflora is a plant from the genus silk ( Cuscuta ) in the family of wind plants (Convolvulaceae). Like all species in this genus, it is a parasite .

description

Cuscuta planiflora has thin and highly branched stems .

The flowers are about 1.5 to 2.5 mm in size and five-fold. They stand in spherical, compact balls with a diameter of 5 to 6 mm. The calyx is white or rarely pink, as long as the corolla tube and deeply split. The calyx lobes are longer than the calyx tube and clearly swollen, so that they are almost semicircular in cross section. They are elongated or, more rarely, egg-shaped. The crown is colored white, the corolla lobes are protruding, pointed, often with a hood tip, and about as long as the bell-shaped corolla tube. The anthers protrude beyond the crown. The scales at the base of the crown are elongated, usually reach the stamens and are briefly fringed. The styles , including the stigma , are about as long as the ovary .

The fruits are pressed-in spherical capsules that are covered by the remains of the crown. The seeds are shorter than 1 mm.

The chromosome number is 2n = 14, 26, 28 or 34.

Occurrence

The range of the species includes Macaronesia, Madagascar, Eritrea to South Africa and extends from the Mediterranean area to northwestern India. The species parasitizes on dwarf shrubs and annual plants .

Systematics

The following varieties can be distinguished:

Cuscuta planiflora var. Algeriana Yunck. : It occurs in Spain, Algeria and Morocco.
Cuscuta planiflora var. Ambigua (Trot.) Yunck. : It occurs in Morocco.
Cuscuta planiflora var. Globularis Balf.f. : It occurs on Socotra .
Cuscuta planiflora var. Globularis Balf.f. : It occurs in France, Greece and Sicily.
Cuscuta planiflora var. Holstii Baker & Rendle : It occurs from Ethiopia to Tanzania .
Cuscuta planiflora var. Madagascariensis (Yunck.) Verdc. : It occurs from Kenya to South Africa and Madagascar.
Cuscuta planiflora var. Papillosa Engelm. : It occurs in Morocco, Algeria, Tunisia and Iran. The chromosome number is 2n = 34.
Cuscuta planiflora var. Planiflora
Cuscuta planiflora var. Sicula (Tineo ex Engelm.) Trot. ex Yunck. : It occurs from the Mediterranean area to Iran. The chromosome number is 2n = 28.

literature

Naomi Feinbrun: Cuscuta. In: TG Tutin, VH Heywood, NA Burges, DM Moore, DH Valentine, SM Walters, DA Webb (eds.): Flora Europaea . Volume 3: Diapensiaceae to Myoporaceae . Cambridge University Press, Cambridge 1972, ISBN 0-521-08489-X , pp. 77 (English, limited preview in Google Book search).

Individual evidence

↑ ^a ^b ^c Cuscuta planiflora at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Rafaël Govaerts (Ed.): Cuscuta planiflora. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved February 4, 2016.

Web links

Commons : Cuscuta planiflora - Collection of images, videos and audio files

[IPCN-1] Cuscuta planiflora at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis

[WCSP-2] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Rafaël Govaerts (Ed.): Cuscuta planiflora. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved February 4, 2016.