Macrosyringion
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Macrosyringion is a plant genus in the family of Broomrape family (Orobanchaceae).
description
Macrosyringion species are annual herbaceous plants . The stems are covered with downy, short-haired and glandular trichomes . The leaves have a linear, entire leaf blade , which is short-haired on both sides and very hairy with glands.
The zygomorphic and autogamous flowers stand in inflorescences that bloom from top to bottom. Compared to most tooth rust species, the flowers of the genus Macrosyringion are noticeably long at 10 to 25 mm. The calyx is covered with stalk glands, the heads of which consist of 40 to 50 cells, the upper cells being pulled out like papillae . The crown is colored yellow, the corolla tube is significantly longer than the coronet. The corners of the coronet are hairy on the outside, the hem is clearly divided into the helmet and lower lip. The helmet is clearly outlined, the central tip of the lower lip is almost half as long as the entire lower lip.
The stamens are hairy; the stamens covered with papillae; the counters of the anthers are hairy with beards and have spiral-shaped hairs at the upper, blunt end and clearly pronounced awns at the lower end. The pollen grains are 36 to 40 × 38 µm in size and have a circular equatorial outline. The pollen grain wall (exine) is evenly thick and is sculptured retipilat. The scar is clearly club-shaped, two-lobed and covered with cylindrical papillae. The ovary is 17 to 40 ovules .
The capsule fruits are narrow-elliptical and their outline is almost rectangular.
Systematics
The genus Macrosyringion was established in 1943 by Werner Hugo Paul Rothmaler in the Mittheilungen der Thuringische Botanische Verein , ns, 50, page 227. The type species is Macrosyringion longiflorum (Vahl) Rothm.
The genus Macrosyringion occurs in northern and western Spain and in the higher mountains of the Balkans and Anatolia to the east of the Caucasus .
The two species from the genus Macrosyringion are also assigned to the tooth rusts ( Odontites ) by some authors , but the genus Macrosyringion can be differentiated from Odontites by the morphology of the pollen (Bolliger 1996).
Two species are distinguished within the genus Macrosyringion :
- Macrosyringion glutinosum (Bieb.) Rothm. (Syn .: Odontites glutinosa (M.Bieb.) Benth. ): The number of chromosomes is 2n = 24. It occurs in southeast to eastern Europe and western Asia.
- Macrosyringion longiflorum (Vahl) Rothm. (Syn .: Odontites longiflora (Vahl) Webb ): The number of chromosomes is 2n = 24 or 26. It occurs in Spain and Morocco .
literature
- Markus Bolliger: Monograph of the genus Odontites (Scrophulariaceae) and the related genera Macrosyringion, Odontitella, Bornmuellerantha and Bartsiella. In: Willdenowia: Annals of the Botanic Garden and Botanical Museum Berlin-Dahlem , Volume 26, 1996. pp. 37-168. (Online: Part 1 (PDF; 2.4 MB), Part 2 (PDF; 1.2 MB), Part 3 (PDF; 1.2 MB), Part 4 ; PDF; 2.1 MB)
Individual evidence
- ↑ Macrosyringion at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed January 30, 2018.
- ↑ a b c Karol Marhold (2011+): Macrosyringion L. = Synonym of Odontites : Datasheet In: Euro + Med = Plantbase - the information resource for Euro-Mediterranean plant diversity .
- ↑ a b Macrosyringion at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis