Nolana dianae
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Nolana dianae is a plant type from the genus Nolana . It is only known from two locations, which are located near the Pacific in Chile .
description
Vegetative characteristics
Nolana dianae are recumbent to creeping, succulent herbaceous and optional annual plants , which means that the individual individuals are reproductive in the first or in the second year. The plants occupy a soil surface of 30 to 100 cm in diameter. The individual, highly branched shoot axes can reach a length of 30 to 40 cm, they are dark purple and covered with stalked, glandular trichomes .
The leaves are sessile and alternate. The leaf blade is elongated to inversely lanceolate, the length is 10 to 20 mm, the width 3 to 4 (rarely up to 5) mm. The leaves are dark green, succulent, with entire margins, the leaf edges are bent back. The underside is strongly concave, in cross section they are ovate to heart-shaped. The tip of the leaf is blunt to rounded, the base is wedge-shaped and thickened.
blossoms
The flowers appear in October, they stand individually in the axils of the upper leaves, the thread-like flower stalks stand upright and are 10 to 15 (rarely up to 20) mm long. The calyx is bell-shaped, 4 mm wide and 7 to 10 mm long, of which the calyx tube is about 5 mm. The calyx tube is followed by five uniform calyx lobes that are lanceolate, about 4 mm long and 1 mm wide. The crown is narrowly funnel-shaped and reaches a length of 18 to 24 mm, it is white and dark purple in color along the main veins of the petals, creating a star-shaped pattern. The corolla lobes are blunt and 2.5 to 3 mm long and 9 to 10 mm wide. The crown is covered with stalked, glandular trichomes.
The five stamens do not protrude beyond the crown, the stamens start in the lower third of the crown, the base is finely haired. Three of the stamens are 2 to 3 mm long, the other two are slightly longer at 3.5 to 4.5 mm. The purple and hairless anthers consist of two 1.5 to 2 mm long and 1 to 1.5 mm wide counters. The ovary is hairless, it consists of five carpels , at its base nectaries are formed. The stylus does not protrude beyond the crown, the stigma is green and head-shaped.
fruit
The fruits are cluster fruits consisting of four to five partial fruits , which are in an enlarging calyx. The individual partial fruits are spherical and measure 2.5 to 3 mm in diameter, each contains two to three seeds .
Occurrence and locations
The species is only known from two locations, which are in Chile . The type specimen was collected at a height of 300 to 350 m on the lower slopes of a gorge above Playa de los Hornos , about 10 km away from the Pacific . The species grows there in association with other species of the genus, such as Nolana balsamiflua , Nolana linearifolia and Nolana peruviana .
The second location is further north in a ravine near Tocopilla .
etymology
The species was named after Diane O'Donnell Moran Dillon, who accompanied the collector of the species, Michael O. Dillon, during many stays in Chile and Peru. Surprised by the discovery of such a very unusual species, Michael O. Dillon immediately promised when he found it in 1988 that he would name the species after her if it really was a new species. This promise was kept 19 years later by the first description.
literature
- Michael O. Dillon, Gina Arancio and Federico Luebert: Five new species of Nolana (Solanaceae-Nolaneae) from Chile . In: Arnaldoa , Volume 14, Number 2, 2007. Pages 191-212.