Asperula laevigata

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Asperula laevigata
Systematics
Subfamily : Rubioideae
Tribe : Rubieae
Sub tribus : Rubiinae
Genre : Meier ( Asperula )
Section : Glabella
Type : Asperula laevigata
Scientific name
Asperula laevigata
L.

Asperula laevigata is a species ofthe red family (Rubiaceae). It is common in the Mediterranean area.

description

Appearance and leaf

Asperula laevigata grows as a perennial herbaceous plant with heights of 15 to 80 centimeters. It forms a "rootstock-like" stem axis system with slender runners . The more or less weak, square, ascending to upright stems rarely branch at the base and are hairless. Asperula laevigata does not turn black when dry.

The leaves are arranged in four whorls on the stem. The simple, hairless leaf blade has a length of 4.9 to 25 millimeters and a width of (rarely 3.5 to) 4 to 10 (rarely up to 11) millimeters elliptical to ovate, narrows to a stalk-like, slightly lighter colored Base and has a more or less rounded tip. It has a prickly main vein and a distinct, reticulate leaf vein . The leaf margins are sparsely hairy in several rows.

Inflorescence and flower

The flowers with 0.5 to 2 millimeter long pedicels are in elongated pyramidal total inflorescences and somewhat zymous partial inflorescences with lanceolate to thread-like bracts . The hermaphroditic flowers are radial symmetry and four-fold. The chalice is reduced. The four white, 1.3 to 2 millimeter long petals are hairless and fused together in a funnel shape. The crown consists of the 0.7 to 1.2 millimeter long corolla tube and the corolla lobes, which are 0.5 to 0.7 millimeters long and wide. The stamens have 0.2 to 0.4 millimeter long filaments and egg-shaped to spherical, yellow anthers that are 0.2 to 0.3 millimeters in size and do not protrude beyond the crown.

Fruit and seeds

The 1 to 1.5 millimeter large fruits are dry, grainy and hairless.

Chromosome number

The number of chromosomes is 2n = 44.

Occurrence and endangerment

Asperula laevigata inhabits wooded areas in the Mediterranean and reaches altitudes of the montane zone. In Europe , Asperula laevigata occurs in Spain (also on the Balearic Islands ), France (also on Corsica ), Italy (also on Sardinia and Sicily ), in former Yugoslavia (here at least in today's Croatia ), Romania (the species is considered endangered here ), Albania and Greece . In North Africa , Asperula laevigata is common in Algeria and Tunisia .

Systematics

Asperula laevigata was first published in 1767 by Carl von Linné in Mantissa Plantarum , p. 38 . Synonyms for Asperula laevigata L. are Asperula fallax Ehrh. , Asperula rotundifolia L. and Galium rotundatum Griseb. . Asperula laevigata belongs to the Glabella section in the genus Asperula .

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literature

  • Friedrich Ehrendorfer & Franz Krendl: Flora Europaea . Plantaginaceae to Compositae (and Rubiaceae). Ed .: TG Tutin et al. 1st edition. Vol.4. Cambridge University Press, Cambridge 2010, ISBN 978-0-521-15367-6 , CXLIV Rubiaceae, pp. 12–13 ( Asperula laevigata L. in soft-cover edition).
  • Gheorghe Dihoru & Ilie Goga: Asperula laevigata . (Rubiaceae) - a new species to the flora of Romania. In: Bulgarian Academy of Sciences (ed.): Phytologia Balcanica . tape 10 (2-3) , 2004, ISSN  1310-7771 , p. 183–185 ( online [PDF; 156 kB ]).

Individual evidence

  1. ↑ Details for: Asperula laevigata. (No longer available online.) In: The Euro + Med Plantbase Project. Botanic Garden and Botanical Museum Berlin-Dahlem, July 21, 2010, formerly in the original ; accessed on September 9, 2011 .  ( Page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.@1@ 2Template: Toter Link / ww2.bgbm.org  
  2. ^ The Plant List. A working list of all plant species. January 1, 2010, accessed September 9, 2011 ( Asperula laevigata L.).

Web links