Adoxa
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Musk herb ( Adoxa moschatellina ) |
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| Adoxa | ||||||||||||
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Adoxa is a genus inthe musk herb family (Adoxaceae). The three to four species are common in the temperate zones of the northern hemisphere .
description
Appearance and foliage leaf
The Adoxa species are perennial herbaceous plants with one or two bare stems . Creeping and thread-like rhizomes with terminal white tubers are formed as persistence organs.
The leaves are stalked. There are one to three basal leaves and two opposite and rarely alternate stem leaves. The leaf blades are pinnate one to two-fold; the end sections are trilobed. Stipules are absent.
Inflorescence, flower and fruit
The flowers are in terminal, mostly head-shaped dense, rarely grape-like elongated, zymous inflorescences .
The seated flowers are four or five-fold, radial symmetry and hermaphroditic. The light green calyx is weakly cup-shaped and has two calyx tips on the terminal flowers and three on the side flowers. The four or five light to yellowish green petals each form wheel-shaped corollas with a short corolla tube at an angle of 90 degrees. The terminal flowers have three to six and the lateral flowers four to six corolla lobes. The corolla lobes are covered on the inside with papillary growths.
Only the outer circle of the stamen contains four or five fertile stamens . The stamens inserted on the corolla tube are half or completely split. The shield-shaped outwardly curved anthers have only one theka and open in a longitudinal slot. The inner circle of the stamen is reduced to glandular outgrowths. The four or five carpels are fused into a subordinate to semi-subordinate, four- or five- chamber ovary. There are four or five styluses attached to the base . The scars are heady.
The berry-like, almost spherical stone fruits are fleshy and partially enclosed in the perennial calyx.
Chromosome number
The basic chromosome number is x = 9; were tetraploid , hexaploid and dodekaploide found plants with chromosome numbers of 2n = 36, 54, and 108th
Systematics and distribution
The genus Adoxa was first published in 1753 by Carl von Linné in Species Plantarum . Synonyms for Adoxa L. are Moscatella Adans. , Moschatellina Mill. And Tetradoxa C.Y.Wu .
The species Adoxa moschatellina is widespread in the temperate zones of the northern hemisphere . Two species are found only in the mountains of China .
The genus Adoxa contains three or four species :
- Musk herb ( Adoxa moschatellina L. , Syn .: Adoxa inodora ( Falc. Ex CBClarke) Nepomn. , Adoxa moschatellina var. Inodora Falc. Ex CBClarke ): It is widespread in Eurasia and North America .
- Adoxa omeiensis H.Hara (Syn. Tetradoxa omeiensis (H.Hara) CYWu ): It is an endemic that onlythrivesin the southwestern Chinese province of Sichuan in humid locations in forests or sometimes on rocks at altitudes of about 2300 meters.
- Adoxa xizangensis G.Yao : It grows on stony or rocky soils over limestone, forests, forest edges, meadows and shady slopes at altitudes between 3400 and 3900 meters in the southwest Chinese provinces of Sichuan and Yunnan as well as in the Tibet Autonomous Region .
Literature / sources
- Qiner Yang, David E. Boufford: Adoxaceae. In: Wu Zheng-yi, Peter H. Raven, Deyuan Hong (Eds.): Flora of China . Volume 19: Cucurbitaceae through Valerianaceae, with Annonaceae and Berberidaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 2011, ISBN 978-1-935641-04-9 , Adoxa , p. 613 (English, online ). (Sections Description, Distribution and Systematics)
- Yasin J. Nasir: Adoxaceae . In: SI Ali & M. Qaiser (eds.): Flora of Pakistan . tape 151 . Department of Botany, University of Karachi u. a., Karachi et al. a. 1983, OCLC 174168218 , Adoxa, p. 1 ( online - section description).
- SM Walters: Adoxa. In: TG Tutin, VH Heywood, NA Burges, DM Moore, DH Valentine, SM Walters, DA Webb (eds.): Flora Europaea . Volume 4: Plantaginaceae to Compositae (and Rubiaceae) . Cambridge University Press, Cambridge 1976, ISBN 0-521-08717-1 , pp. 48 (English, limited preview in Google Book search).
