Kadua affinis
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| Cham. & Schltdl. |
Kadua affinis is a plant from the genus Kadua in the family of the Rubiaceae (Rubiaceae). It is endemic to Hawaii .
description
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Vegetative characteristics
Kadua affinis grows as a shrub , liana or small tree that can reach heights of up to 5 meters.
The constantly against arranged on the branches leaves are divided into a petiole and leaf blade. The petiole is 0.2 to 3 inches long. The simple, membrane-like or paper-like to leathery leaf blade is 2 to 23 centimeters long and 0.8 to 8 centimeters wide, from obovate to elliptical and oblong to oblong-lanceolate, occasionally also approximately circular. The top of the leaf blade is glabrous while the underside is glabrous or finely haired, with the hairiness sometimes occurring only along the leaf veins . The base of the spreader is heart-shaped or wedge-shaped, truncated or tapered to a narrow point, the tip of the spreader is blunt, rounded, pointed or pointed, and the edge of the spreader, which is occasionally bent back, has entire margins. Several more or less conspicuous side veins branch off from each side of the central leaf vein. The stipules resemble the deciduous leaves, are fused with the base of the petiole and thereby form a leaf sheath . The leaf sheath is 2.5 to 16 millimeters long.
Generative characteristics
The terminal, rarely axillary, hanging or upright paniculate inflorescences are 3 to 25 centimeters long. Occasionally, shorter inflorescences appear on short, leafy side branches. The bald or finely hairy inflorescence stalk is 0.4 to 3.5 inches long. The inflorescences contain several single stalked flowers. The finely hairy flower stalks are 0.1 to 0.4 inches long.
The four-fold flowers are radial symmetry . The sepals are fused together to form a calyx tube. The more or less ciliate calyx lobes are triangular, triangular-ovoid to elongated-triangular in shape with a length of 0.5 to 2.2 millimeters. The fleshy, bald or finely hairy petals are fused together like a salver. The purple or green corolla tube reaches a length of 0.4 to 1.5 centimeters and has an approximately square cross-section. The four yellowish green and mostly purple speckled corolla lobes reach lengths of 0.2 to 0.7 centimeters and have a fleshy appendage at the tip.
The stone fruit- like capsule fruits reach a diameter of 0.4 to 1.2 centimeters and are dark blue to purple-black in color when ripe. The corolla lobes remain on the fruit for a long time. Each of the fruits contains several seeds.
Chromosome number
The number of chromosomes is 2n = approx. 93 *, 95 *, 96 *, 98 *, 100 *, 102-105 *.
distribution
The natural range of Kadua affinis is on some islands belonging to Hawaii . Kadua affinis is endemic to the islands of Hawaiʻi , Kauaʻi , Lānaʻi , Maui Molokaʻi and Oʻahu .
Kadua affinis thrives at altitudes of 260 to 2040 meters. The species grows there in moderately moist to moist forests, occasionally also in swamps and moderately moist bushland.
Taxonomy
It was first described as Kadua acuminata in 1829 by Adelbert von Chamisso and Diederich Franz Leonhard von Schlechtendal in Linnaea . The specific epithet affinis means as much as adjacent , connected or related .
Individual evidence
- ↑ a b c d e f g Kadua affinis. In: Flora of the Hawaiian Islands. www.botany.si.edu/pacificislandbiodiversity/hawaiianflora, accessed on January 1, 2017 (English).
- ↑ a b Kadua affinis. In: Native Plants Hawaii. www.nativeplants.hawaii.edu, accessed January 1, 2017 .
- ^ Kadua affinis at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed January 1, 2017.
