Coprosma meyeri
| Coprosma meyeri | ||||||||||||
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Branches with leaves and male flowers |
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| Scientific name | ||||||||||||
| Coprosma meyeri | ||||||||||||
| WLWagner & Lorence |
Coprosma meyeri is a plant from the genus Coprosma in the family of the Rubiaceae (Rubiaceae). It occurs endemically only on one island of the Marquesas Islands in the southern Pacific.
description
Vegetative characteristics
Coprosma meyeri grows as a shrub that can reach heights of 2 to 3 meters. The bark of young twigs is sparsely hairy.
The constantly against arranged on the branches leaves are divided into a petiole and leaf blade. The leaf stalk is around 0.1 centimeters long. The simple, thick leathery leaf blade is 4 to 7.2 centimeters long and 1.2 to 2 centimeters wide and is inverted-lanceolate. The base of the spreading tapers in a wedge shape, the tip of the spreader is pointed to pointed and the edge of the spreading is entire. Both the top and bottom of the leaves are bare and domatia are completely absent. The interpetiolaren stipules are similar to the foliage leaves, 0.25 to 0.3 centimeters in length and are fused into about four fifths of its total length to each other. Both the upper and lower side of the stipules are bare and they have toothed and ciliate leaf margins.
Generative characteristics
The lateral, triple branched, zymous inflorescences have very short internodes and contain six to twelve semi-perched single flowers.
The unisexual flowers are radial symmetry and five or six-fold with a double flower envelope . The five or six sepals are fused together like a bell in the male flowers and about 1.5 millimeters from the approximately 2 millimeter long calyx are attributable to the calyx tube and about 0.5 millimeters to the triangular calyx teeth. The five or six petals are fused together in a funnel shape and the corolla tube ends in five or six corolla lobes. In male flowers, the corolla tube is about 3.3 millimeters and the corolla lobes between 2.1 and 2.4 millimeters long. The stamens are 2.5 to 3.1 millimeters long while the stamens reach lengths of up to 1.1 centimeters. Nothing is known about the female flowers.
Nothing is known about the stone fruits or the seeds.
distribution
The natural range of Coprosma meyeri is on the Marquesas Islands in the southern Pacific . Coprosma meyeri is an endemic that only occurs on the island of Hiva Oa . As far as is known, this includes one, along the path according to Hanamenu located ridge in the region FEANI .
Coprosma meyeri thrives at altitudes of around 1090 to 1113 meters. This species grows there along a mountain ridge, in cloud-covered, low and humid forests and bushland. Various species of Alsophila , Alstonia , Ascarina , rib ferns ( Blechnum ), Cheirodendron , Crossostylis , Cyrtandra , Dicranopteris , Freycinetia , Myrsine , Oparanthus , crushed shrubs ( Psychotria ), Reynoldsia and Trimenia grow in the forest and scrubland .
Taxonomy
The first description of Coprosma meyeri was made in 2011 by Warren L. Wagner and David H. Lorence in phytokeys . The specific epithet meyeri honors the biologist Jean-Yves Meyer, who has made an outstanding contribution to the research and conservation of the biodiversity of French Polynesia .
Individual evidence
- ↑ a b c d e f g h Warren L. Wagner, David H. Lorence: Revision of Coprosma (Rubiaceae, tribe Anthospermeae) in the Marquesas Islands . In: PhytoKeys . No. 4 , 2011, ISSN 1314-2003 , p. 109-124 , doi : 10.3897 / phytokeys.4.1600 .
- ^ Coprosma meyeri at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed November 11, 2016.
