Asteracaeae

Asteraceae

Taraxacum crepidiforme DC.
subsp. kurdicum (HAND.-MAZ. EX NAB.)
VAN SOEST

Taraxacum WIGGERS
Taraxacum crepidiforme DC. subsp. kurdicum (HAND.-MAZ. EX NAB.) VAN SOEST
Ömür: Çok yıllık
Yapı: ot
Hayat formu:
İlk çiçeklenme zamanı: 6
Son çiçeklenme zamanı: 8
Habitat: nemli alpin çayır, eriyen kar örtü yakını
Minimum yükseklik: 1500
Maksimum yükseklik: 3650
Endemik: -
Element: İran-Turan
Türkiye dağılımı: GD. Anadolu
Genel dağılımı: K. Irak
Bulunduğu iller
Bulunduğu kareler : A7 A8 A9 B5 B7 B8 B9 B10 C5 C6 C9 C10

T. crepidiforme DC, Prodr. 7:149 (1838).
Plant glabrous or nearly so. Leaves mostly lingulate, rarely very narrowly obovate, ± non-dentate, with a pale, often ± winged petiole. Involucre dark green, outer bracts adpressed or nearly so, without gibbosities, often with a broad, white margin, but sometimes green with a narrow, black, small central field, the latter rarely very narrow and ± restricted to the central nerve. Ligules ± purple or dark violet on outside; pollen present; stigmas and styles black (exceptionally dirty yellow). Achenes straw-coloured, with a rather thick and rather short beak, or rarely beakless; pappus white. 2n = 16. Fl. 6-8. Damp alpine pastures, often near melting snow, 1500-3650 m.
1. Beak present subsp. crepidiforme
1. Beak absent subsp. kurdicum
subsp. kurdicum (Hand.-Mazz. ex Náb.) van Soest in Acta Bot. Neerl. 17:487 (1968). Syn: T. paradoxum Hand.-Mazz. in Ann. Nat. Hofmus. Wien 37:457 (1913) non Somes (1907) nec Palmgren (1910); T. kurdicum Hand.-Mazz. ex Náb. in Publ. Fac. Sci. Univ. Masaryk Brno 52:52 (1925) non G.Hagl. (1939).
Type: [Turkey C9] distr. Hakkari: Ğelo-Dar (Cilo Da.) dit. Ğulamerik (Cölemerik), ad tentoria aestiva Djezra, in alveolis nivalibus et in pascuis alpinis alt. 2700-2900 m, 3 ix 1910, Nábélek 3760!
B9 Siirt: Meleto (Meretug) Da., 2700-3100 m, Hand.-Mazz. 2715!
N. Iraq. Ir.-Tur. element. Handel-Mazzetti was very surprised to find this form without a beak, certainly a rare phenomenon in Taraxacum, known in T. glaciate Huet, T. primigenium Hand.-Mazz. and T. assemanii Blanche. A closer study of T. crepidiforme shows, however, that in this species the length of the (always short) beak is variable. Also in other characteristics T. crepidiforme is a variable species, for instance in the colour of the outer phyllaries. I have not been able to find a correlation between other characteristics and the length of the beak. Many specimens in herbaria are without achenes, which complicates a closer study. The variability of T. crepidiforme, in which I prefer to include T. kurdicum as a subspecies, is not surprising, as diploidy, and therefore probably sexuality, is found in this species.