Solanum albornozii

Solanum albornozii is a species of the section Petota in the genus of the nightshade (Solanum ).

Description

Vegetative characteristics

Solanum albornozii is a 0.4 to 1 m tall, herbaceous plant. The stems are thick, glabrous at the base of 3 to 5 cm and may be winged with up to 0.21 mm wide wings. The sympodial units have three to many leaves, they never are, however, in pairs. The leaves are pinnate odd. The leaf blade has a length of 10.5 -26cm and a width of 6.6 to 14 cm, it is leathery and glossy. The underside is pale green in color and glabrous or initially staffed with very short trichomes and later glabrous, colored the top dark green and hairless. On each side of the leaf axis are five to seven part leaves first order, where the average is greatest are. The outer part leaves have a length of 3 to 8.5 cm and a width of 0.7 to 2.2 cm, are elliptic, acuminate to acute forward, the base is short -stalked or sessile and slightly decurrent at the base. You are at the base side facing slightly larger. The terminal portion of sheet is almost equal to or smaller than the side portion sheets, reaching a length of 3.7 to 6.5 and a width from 0.9 to 2 cm, is elliptical, forwardly pointed or tapered and the base of wedge-shaped. Between the main part leaves are 14-85 ovate to circular inserted leaflets, which are sessile or shortly stalked. The petiole has a length of 1 to 5.5 cm and is hairless. The pseudo- stipules are 3-5 mm long and fully or nearly hairless.

Inflorescences and flowers

The inflorescences are terminal and are accompanied by an axillary bud and are usually only in the outer half of the plant. They reach a length of 6 to 10 cm, are usually forked and consist of 22-86 flowers. The inflorescence axes are smooth, the peduncle is 0.5 to 10.4 cm long, the flower stems are 5 to 10 cm apart and are both flowering and for fruit ripening from 10 to 24 mm long and are bent articulated in the upper half.

The five petals do not occur with different styluses built. The calyx is 4-9 mm long, of which the calyx tube make up about 1 to 3 mm and the calyx lobes 2 to 5 cm. The latter are ovate to lanceolate, provided with 0.4 to 3 mm long, strongly narrowed tips and hairless. The Crown measures 2 to 3.7 mm in diameter, is pentagonal to wheel-shaped - pentagonal, white in color and provided with a purple stripe on the back of the Corolla lobe. The corolla tube is 1.2 mm long, the coronary band is provided with 0.5 to 0.8 mm long points, the corners of Kronsaums are flat and easily folded back.

The stamens consist of 1 to 2 mm long stamens, and 4 to 8 mm long anthers. The anthers are lanceolate, colored yellow and are inclined together. They open at first by pores at the tips, but later expand to slits. The ovary is smooth, the straight, hairless pen is 3 to 10 mm long, 1 mm wide and rises above the stamens to about 0.9 to 4 mm. The scar is clavate to capitate.

Fruit and seeds

The fruits are ovoid, 1.1 to 1.4 cm in diameter, hairless and medium green berries. The seeds are oval and about 2 mm long, whitish to greenish and brownish -drying. They are densely covered with hair- like outgrowths of the outer seed wall cells, so that the seeds are mucilaginous when they are wet.

Occurrence

The species is known only from four sites from the Ecuadorian provinces of Loja and Azuay. It grows among shrubs on slopes at altitudes 2350-3400 meters.

Endangering

Due to the relatively small area of ​​distribution and the associated risk of destroying the sites, the species in the Red List of Threatened Species IUCN as "endangered " is ( endangered ) classified.

Documents

• D. M. Spooner and M. Ames: Solanum albornozii. In: PBI Solanum: A worldwide treatment, online, accessed on April 28, 2009.
• Montúfar R. and N. Pitman: Solanum albornozii. In: 2008 IUCN Red List of Threatened Species, online, accessed on April 28, 2009.

• Nightshade
• Solanum