Asperula neglecta
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Asperula neglecta is a plant species in the family of the redness plants (Rubiaceae). It can be found in central and southern parts of the Apennines mountain rangein Italy .
description
Appearance and leaf
Asperula neglecta grows as a more or less dense lawn-forming, perennial herbaceous plant . It forms a taproot . With the weak and square as well as more or less hairy , sometimes almost bald stems, it reaches heights of growth of 2 to 7 (rarely up to 10) centimeters. The young and non-flowering plants are colored green. The lower internodes are very short; the mean leaf spacing, however, is shorter or hardly longer than the leaves.
The against-constant , at the top of hyaline designed leaves , along with the similar looking stipules in four-leaf whorls summarized. The basal foliage leaves with simple , ovoid to obovate leaf blades are in dense clusters. The short-haired or bald and very thin, leathery leaf blades of the stem leaves are 5 to 20 millimeters long and 1.3 to 1.5 millimeters wide and lanceolate to lanceolate with a pointed upper end. The edge of the stretcher is slightly rolled down. A midrib extends to a little less than three quarters of the length of the blade.
Inflorescence, flower and fruit
The umbrella-clustered total inflorescences are composed of head-shaped partial inflorescences in which flowers stand together with free or slightly overgrown, broadly lanceolate bracts . The flowers are either sessile or have peduncles up to 1 millimeter long.
The hermaphrodite flowers are radial symmetry and four-fold with a double flower envelope . The four sepals are reduced or completely absent. Four pink petals form the 3 to 3.5 millimeters large, narrowly funnel-shaped and externally short haired or bald crown. The corolla tube is about four to five thirds longer than the corolla lobes. There is only a circle with four stamens that do not protrude above the crown.
Asperula neglecta forms 1 to 1.5 millimeters large and protruding hairy or fine waxy decay fruits .
Systematics
The first description of Asperula neglecta was carried out in 1826 by Giovanni Gussone in Plantae Rariores Quas in Itinere by Oras jonii ac Adriatici Maris et per Regiones Samnii ac Aprutii , pp 69-70, Table 13, Figure 2. synonyms for Asperula neglecta cast. are Asperula neglecta var. nitens ( Guss. ) Nyman and Asperula nitens Guss. . A homonym is Asperula neglecta Moris , which was published in Giuseppe Giacinto Moris ' Stirpium Sardoarum Elenchus , Volume 2, Page 4 in 1828 ; however, it is a synonym for the species Asperula pumila Moris .
Asperula neglecta belongs to the section Cynanchicae within the genus Asperula . There it forms the "Asperula pyrenaica group", in which possibly related, mountainous regions colonizing species with disjoint areas such as Asperula beckiana , Asperula neilreichii , Asperula rupicola and Asperula pyrenaica are placed.
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literature
- Friedrich Ehrendorfer , Franz Krendl : Asperula. 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. 9 (English, limited preview in the Google book search - genus Asperula including key, section Cynanchicae (p. 4–6), Asperula pyrenaica group and Asperula neglecta itself (p. 9), from the unchanged reprint from 2010 ISBN 978- 0-521-15369-0 ).
Individual evidence
- ^ Giovanni Gussone: Plantae Rariores Quas in Itinere per Oras Jonii ac Adriatici Maris et per Regiones Samnii ac Aprutii , 1826: Google Books.
- ↑ a b Asperula neglecta cast. In: Tropicos. Missouri Botanical Garden, accessed January 14, 2012 (with forwarding options).
- ^ The Plant List. A working list of all plant species. 2010, accessed on January 14, 2012 (English, Asperula neglecta var. Nitens (cast.) Nyman - assessment of synonyms).