Lycium exsertum
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Lycium exsertum |
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Lycium exsertum is a plant type from the genus of Lycium ( Lycium ) in the family of the nightshade family (Solanaceae).
description
Lycium exsertum is a 1 to 4 m tall, openly branched shrub . Its leaves are 5 to 25 mm long, 3 to 8 mm wide and densely hairy with glands.
The flowers appear in two forms and are five-fold. The calyx is tubular-bell-shaped and densely hairy. The calyx tube has a length of 2.5 to 6 mm. The length of the calyx lobes corresponds to 1/4 to half the length of the calyx tube. The crown is broadly ovate or, conversely, ovate, whitish, greenish or purple, brown or pale lavender-colored. The length of the corolla tube is 7 to 12 mm, that of the corolla lobes 1 to 2 mm. The anthers are densely tomentose in the lower two thirds of the free-standing area.
The fruit is an egg-shaped berry with a length of 6 to 8 mm. It contains around 20 to 30 seeds .
The number of chromosomes is 2n = 24 or 48.
Occurrence
The species is distributed in North America and occurs there in the Mexican states of Baja California and Sonora , as well as in the US state of Arizona .
Systematics
Within the box thorn ( Lycium ) the species is grouped according to phylogenetic studies in a clade with other North and South American species of the genus. The species is closely related to Lycium americanum , Lycium infaustum , Lycium Fremontii , Lycium parishii , Lycium texanum , Lycium torreyi , Lycium berlandieri , Lycium andersonii , Lycium elongatum , Lycium athium and Lycium minimum .
literature
- JS Miller and RA Levin: Lycium exsertum . In: Project Lycieae
- Rachel A. Levin et al .: Evolutionary Relationships in Tribe Lycieae (Solanaceae). In: DM Spooner, L. Bohs, J. Giovannoni, RG Olmstead and D. Shibata (eds.): Solanaceae VI: Genomics meets biodiversity. Proceedings of the Sixth International Solanaceae Conference, ISHS Acta Horticulturae 745, June 2007. ISBN 978-90-6605-427-1 . Pp. 225-239
Individual evidence
- ^ Lycium exsertum at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
