Coprosma nephelephila
| Coprosma nephelephila | ||||||||||||
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| Scientific name | ||||||||||||
| Coprosma nephelephila | ||||||||||||
| J.Florence |
Coprosma nephelephila 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 nephelephila grows as a shrub or small tree that can reach heights of 2.5 to 6 meters. The bark of the branches is bare.
The alternate arranged on the branches leaves are divided into a petiole and leaf blade. The petiole has narrow wings and is 0.3 to 1.2 inches long. The simple, leathery leaf blade is 5 to 16.5 centimeters long and 2 to 5.5 centimeters wide and is inverted-lanceolate to oblong to elliptical. The base of the spade tapers to a point, the tip of the spreader is pointed and the edge of the spread is entire. Both the top and bottom of the leaf are bare, but conspicuous raphids can be seen on the underside . Eight to thirteen secondary nerves branch off from each side of the narrow central leaf nerve . Small domatia can be found along the secondary nerves and occasionally along the central leaf nerve . The interpetiolaren stipules resemble the true leaves, 0.4 to 0.6 centimeters long and are about grown-half to four-fifths of its total length to each other. Both the upper and lower sides of the stipules are glabrous and they have toothed and ciliate leaf margins. The tip of the stipules is blunt and has an appendage.
Generative characteristics
The lateral, triple branched, zymous inflorescences contain 6 to 15 individual flowers. The upper end of the inflorescences is formed by a three-flowered umbel . The lower branches of the inflorescence have no or one or two flowers each. The flower stalks are 0.1 to 0.7 millimeters long in the female flowers.
The unisexual flowers are radial symmetry and five to seven-fold with a double flower envelope . The five or seven sepals are fused like a bell in the male flowers and the 2.3 to 3.7 millimeter long calyx is 0.3 to 1.2 millimeters long on the calyx tube and 2 to 2.5 millimeters on the calyx teeth. The 0.4 to 0.8 millimeter long calyx is tubular in the female flowers. The five to seven petals are fused together in a funnel shape and the corolla tube ends in five to seven corolla lobes. In the male flowers, the corolla tube is 6 to 7 millimeters and the corolla lobes about 3 to 3.5 millimeters long, while they reach lengths of 0.25 to 0.4 millimeters and 1.5 to 2.1 millimeters in the female flowers . The five to twelve stamens inserted at the base of the corolla tube are 0.7 to 1 centimeter long. The stylus is 0.7 to 0.9 inches long.
The juicy drupes are elliptical with a length of 1 to 1.1 centimeters and a diameter of 0.5 to 0.6 centimeters. There are permanent calyx teeth at its tip. The stone cores are about 1 centimeter long and 0.4 to 0.45 centimeters wide, flattened and obovate in shape. Each stone core houses a single seed.
distribution
The natural range of Coprosma nephelephila is on the Marquesas Islands in the southern Pacific . Coprosma nephelephila is endemic , only on the, on the island of Nuku Hiva located Toovii occurs -Plateau.
Coprosma nephelephila thrives at altitudes of 970 to 1100 meters. This species grows scattered in wet montane forests. Various species of Alsophila , Crossostylis , holly ( Ilex ), ironwoods ( Metrosideros ) and Weinmannia grow in the forests .
Taxonomy
The first description of Coprosma nephelephila was made in 1986 by Jacques Florence in Bulletin du Muséum National d'Histoire Naturelle, Section B, Adansonia. sér. 4, Botanique Phytochimie 8 . The specific epithet nephelephila refers to the occurrence in cloud forests .
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 nephelephila at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed November 11, 2016.