Agave parrasana
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Agave parrasana |
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| A. Berger |
Agave parrasana is a plant from the genus of the Agave ( agave ). An English common name is "Parrasana Agave".
description
Agave parrasana grows solitary and forms compact rosettes with a diameter of 30 to 50 cm. The light gray to bluish, oval, briefly pointed, stiff leaves are 20 to 30 cm long and 10 to 12 cm wide. The leaf margins are serrated irregularly. The dark brown to gray terminal spine becomes 2 to 4 cm long.
The panicley, straight inflorescence is covered by succulent, purple bracts and is 3 to 4 m high. The red to purple-colored, yellow flowers appear on the upper part of the inflorescence on loosely arranged, variable, branches and are 50 to 60 mm long. The cylindrical flower tube is 10 to 15 mm long.
The flowering period extends from August to October.
Systematics and distribution
Agave parrasana grows in Mexico in the state of Coahuila on limestone slopes and in woodland at an altitude of 1400 to 2500 m. It is associated with Agave gentryi , Yucca carnerosana and Dasylirion species.
The first description by Alwin Berger was published in 1906. A synonym of Agave parrasana Berger is Agave wislizeni subsp. parrasana Gentry (1975).
Agave parrasana is a member of the Parryanae group and grows in a limited, widely scattered manner on limestone slopes in the southeast of Coahuila in inhospitable areas of the Sierra de Parras, Sierra Paila, Sierra San Marcos, Sierra Gavia and Sierra Maderos. The compact rosettes with the briefly pointed leaves are typical. The succulent, large bracts, the Parryanae representatives, which protect the flowers from the winter cold, are unique . Agave parrasana is closely related to Agave montana and Agave gentryi , but differences in size, shape, leaf and flower structure can be seen.
Agave parrasana can withstand short periods of frost down to minus 15 ° C when it is dry.
proof
- August J. Spreading: Agave parrasana . In: The Agaves . The Cactus & Succulent Journal Yearbook, 1968, pp. 78-79.
- Howard Scott Gentry: Agave parrasana . In: Agaves of Continental North America . The University of Arizona Press, 1982, pp. 537-538.
- J. Thiede: Agavaceae . In: Urs Eggli (Hrsg.): Succulent lexicon. Monocotyledons . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , pp. 52 .
- Bernd Ullrich: Agave parrasana . In: Cacti and other succulents . Volume 43, Number 5, 1992, index card 15.
Individual evidence
- ^ In: Notes of the Royal Botanical Garden and Museum in Berlin . Volume 4, number 38, 1906, p. 250 (online) .
