Solanum fusiforme
| Solanum fusiforme | ||||||||||||
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| Solanum fusiforme | ||||||||||||
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Solanum fusiforme is a plant type from the genus Solanum ( Solanum ) in the family of the nightshade family (Solanaceae).
description
Solanum fusiforme is a 0.5 to 2 m high shrub . The twigs are hairless to sparsely downy. The hair consists of unbranched trichomes . The sympodial units usually have four leaves . The leaf blades are almost leathery, 7 to 20 cm long and 3 to 17 cm wide. They are simple and elliptical-egg-shaped or pinnate composed of seven to eleven leaflets. The ratio between length and width for simple leaves is 2: 1 to 3: 1. The leaves are pointed or acuminate towards the front, cut off at the base to wedge-shaped. In the composite leaves, the upper lateral sub-leaflets often run down towards the base of the leaf. Both leaf sides are hairless to sparsely hairy, especially along the leaf axis. The petioles are 1 to 7 cm long and hairless or sparsely (rarely moderately) hairy with fine fluffy hair.
The inflorescences are unbranched, 6 to 18 cm long and consist of six to twelve flowers . The inflorescence stalk is 3 to 7 cm long, the often zigzag-shaped inflorescence axis 1 to 11 cm and the flower stalks 10 to 25 mm. The flower stalks are 1 to 10 mm (rarely up to 30 mm) apart, are articulated at or slightly above the base and leave residues up to 1 mm long. The inflorescences are not or only barely hairy.
The calyx is hairless and measures 3 to 5 mm in diameter. It is covered with 1 to 2 mm long and 1 to 3 mm wide, triangular and often irregularly shaped calyx lobes, the tips of which can be blunt to pointed. The crown is pink to dark purple in color, membranous and star-shaped. It measures 10 to 15 mm in diameter, the corolla tube is 2 to 3 mm long. The corolla lobes are 8 to 13 mm long and 3 to 4 mm wide at the base. They are narrowly triangular, pointed towards the front and hairless on both sides. The anthers are usually inclined and narrowly triangular. Their length is 5 to 7 mm, their width 1.5 to 2.5 mm. On the outside there is a noticeable strip of scaly papillae . The pores are directed outwards. The ovary is hairless. The stylus is glabrous hairy to sparse downy, cylindrical and 7 to 8 mm long, and from 0.5 to 1 mm by measuring. He has a cut-off scar .
The fruits are 3 to 5 cm long and 0.5 to 1.5 cm in diameter. They are elliptical-pear-shaped and pointed towards the front. The surface is hairless and yellow when ripe. There are several small aggregations of stone cells in the pulp. The seeds are 2.5 to 3 mm long and 2 mm wide, strongly flattened and hairy with short felts.
The number of chromosomes is 2n = 24.
Occurrence and locations
The species occurs in Argentina , Paraguay and the southeast of Brazil . It can be found along the outflows of the Paraná and Uruguay rivers , in Araucaria forests, in clearings and in thickets of the Mata Branca area and in alluvial forests and disturbed locations. It grows at altitudes of 500 to 850 m.
Systematics
Within the nightshade ( Solanum ) the species is classified in the section Cyphomandropsis .
literature
- Lynn Bohs: Revision of Solanum Section Cyphomandropsis (Solanaceae) . Systematic Botany Monographs, Volume 61, The American Society of Plant Taxonomists, August 2001. ISBN 0-912861-61-4
Individual evidence
- ↑ Solanum fusiforme at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis