Agave turneri
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| RHWebb & Salazar-Ceseña |
Agave turneri is a plant from the genus of the Agave ( agave ). An English common name is "Turner's Agave".
description
Agave turneri grows solitary with a height of 40 to 120 cm and is 80 to 190 cm wide. The lanceolate, stiff, gray-green to bluish, curved leaves are 40 to 90 cm long, 6 to 13 cm wide and have variable imprints on both sides. The leaf margins are white and serrated irregularly. The gray end thorn is up to 5.5 cm long.
The paniculate, straight to curved inflorescence becomes 2 to 4 m high. The yellow to green colored flowers appear in the upper half of the inflorescence on short, irregularly arranged branches and are 18 to 24 mm long. The cup-shaped flower tube is 2 to 9 mm long.
The elongated, brown three-chambered capsule fruits are 36 to 45 mm long. The shiny, black seeds are 5 to 8 mm long.
The flowering period extends from February to August.
Systematics and distribution
Agave turneri grows in limited regions in Mexico, North Baja California, on deep rocky slopes and cliffs on different soils at an altitude of 180 to 400 m. It is associated with Echinocereus engelmannii , Ferocactus cylindraceus , Cylindropuntia ramosissima and other cacti and succulent species.
The first description by Robert H. Webb and J. Mario Salazar-Ceseña was published in 2011.
Agave turneri is a representative of the Deserticolae group . It grows endemically in Mexico, North Baja California, in exposed locations in various soil formations of the Sierra Cucapa and Sierra El Mayor. Precipitation in the region is extreme and is less than 100 mm per year. The medium-sized, solitary plants have a 2 to 4 m high and narrow inflorescence. Agave turneri is closely related to Agave moranii and Agave desertii var. Simplex , which however differ significantly in inflorescence, flower and leaf structure. The species is extremely endangered. Climate changes in recent years and numerous activities are disturbing this unique location. Brief frosts occur sporadically in the region.
proof
- A. Navarro-Quezada, R. Gonzalez-Chavet, F. Mollina-Freaner, L .E. Eguiarte: Genetic differentation in the Agave deserti (Agavaceae) complex of the Sonoran desert . In: Heredity . Volume 90, 2003, pp. 220-227.
- Robert H. Webb, J. Mario Salazar-Ceseña: Agave turneri (Agavaceae), a new species from northeastern Baja California, Mexico . In: Brittonia . Volume 63, Number 2, 2011, pp. 203-210 ( DOI: 10.1007 / s12228-010-9151-3 ).