Agave sebastiana
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Agave sebastiana in Islas San Benito in South Baja California |
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| Agave sebastiana | ||||||||||||
| Greene |
Agave sebastiana is a plant from the genus of the Agave ( agave ). An English common name is "Cedros Island Agave".
description
Agave sebastiana grows individually, forms a short trunk up to 1.5 m in height, or forms large, compact groups. The broad, linear, egg-shaped, tapering, stiff, green, gray to bluish leaves are 25 to 45 cm long and 8 to 25 cm wide and have imprints of the bud. The dark brown leaf margins are horny. The strong teeth are arranged irregularly. The black to gray terminal mandrel is 2 to 3 cm long.
The paniculate, straight, widely spread, flat inflorescence becomes 2 to 3 m high. The numerous yellow-colored flowers appear in the upper half to the end of the inflorescence on short, variable branches and are 70 to 90 mm long. The funnel-shaped flower tube is 14-25 mm long.
The egg-shaped to elongated three-chamber capsule fruits are 6 to 8 cm long and up to 3 cm wide. The shiny, black seeds are 7 to 11 mm long.
The flowering period extends from March to May.
Systematics and distribution
Agave sebastiana is common in Mexico in central Baja California south in Cedros Island and the surrounding area in arid regions. It is associated with numerous succulent and cactus species.
The first description by Edward Lee Greene was published in 1885. Some of the numerous synonyms of Agave sebastiana Greene are Agave shawii var. Sebastiana (Trel.) Gentry (1949) and Agave disjuncta Trel. (1912).
Agave sebastiana is a member of the Umbelliflorae group . It grows in Mexico in central Baja California south in Cedros Island and the surrounding area. The region's precipitation is less than 100 mm per year. The solitary or group-forming, short stem-forming plants are typical. It is similar to the nearby agave shawii subsp. Agave goldmaniana , which, however, has a wider inflorescence. It is closely related to the agave shawii found in the northern part of the peninsula , but differences in leaf and flower structure are recognizable.
proof
- Alwin Berger: The agaves. Contributions to a monograph. Jena 1915, p. 172.
- August J. Spread: Agave sebastiana . In: The Agaves . The Cactus & Succulent Journal Yearbook, 1968, pp. 75-76.
- Howard Scott Gentry: Agave sebastiana . In: Agaves of Continental North America . The University of Arizona Press, 1982, pp. 645-647.
- J. Thiede: Agave sebastiana . In: Urs Eggli (Hrsg.): Succulent lexicon. Monocotyledons . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , pp. 61-62 .
Individual evidence
- ↑ In: Bull. Calif. Acad. Sci. Volume 1, 1885, p. 214.
