Agave asperrima
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Agave asperrima is a plant from the genus of the Agave ( agave ). An English common name is "Rough Agave, Maguey Cenizo".
description
Agave asperrima forms open rosettes, sprouts abundantly and sometimes forms sparse runners. It reaches heights of growth of 70 to 100 centimeters and a diameter of up to 200 centimeters. The variable, runny, roughened, lanceolate, light green to bluish leaves are 60 to 110 cm long and 12 to 16 cm wide. The rarely horny leaf margins are serrated variably. The brown end thorn is 3.5 to 6 cm long.
The paniculate, slender, broad, straight inflorescence becomes 4 to 6 m high. The narrow yellow flowers are 60 to 80 mm long and appear on the upper part of the inflorescence on irregularly arranged, small branches. The flower tube is 13 to 20 mm long.
The elongated three-chamber capsule fruits are 40 to 50 mm long and 17 to 20 mm wide. The flat, black seeds are up to 5 mm long and 6 to 7 mm wide.
The flowering period extends from April to July.
Systematics and distribution
Agave asperrima grows in Texas in the United States and in northern Mexico in the states of Durango , Zacatecas , Chihuahua , Coahuila and Nuevo León , distributed on stony slopes, in various soil formations, in grasslands and open woodlands at an altitude of 500 to 1900 m. It is associated with Yucca linearifolia and numerous cacti and succulent species.
The first description by Georg Albano von Jacobi was published in 1864. Synonyms are Agave scabra Salm-Dyck and Agave caeciliana Berger . The following subspecies are distinguished:
- Agave asperrima subsp. asperrima
- Agave asperrima subsp. maderensis
- Agave asperrima subsp. potosiensis
- Agave asperrima subsp. zarcensis
Agave asperrima is a representative of the Americanae group . Together with Agave lechuguilla, it is the most common species in the Chihuahua Desert in Mexico. The variability within the populations is correspondingly high. Due to various differences in size, shape, leaf and flower structure, Ullrich created the subspecies. The species is related to Agave americana and Agave marmorata . Transitional forms are known. It hybridizes with Agave salmiana and Agave americana in Arizona.
The species can tolerate short periods of frost down to minus 5 ° C when dry. Agave asperrima is grown in the Desert Botanical Garden in Arizona.
literature
- August J. Spreading: Agave asperrima. In: The Agaves. The Cactus & Succulent Journal Yearbook. 1968, p. 78.
- Howard Scott Gentry: Agaves of Continental North America. University of Arizona Press, 1982, ISBN 0-8165-0775-9 , pp. 296-301.
- Thomas Heller: Agaves . Ntv, Münster 2006, ISBN 3-937285-59-8 , pp. 65-66.
- Mary & Gary Irish: Agaves, yuccas, and related plants. A Gardener's Guide . Timber Press, 2000, ISBN 0-88192-442-3 .
- James L. Reveal, Wendy C. Hodgson: Flora of North America Agavaceae . Oxford University Press, 2002, pp. 452, 156-159, Pl. 36, Figs. 1-1, 4-1 .
- J. Thiede: Agave asperrima. In: Urs Eggli (Hrsg.): Succulent lexicon. Monocotyledons . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , p. 13.
- B. Ullrich: On the history of Agave asperrima and Agave scabra (Agavaceae) as well as some taxa of the Parryanae. In: Sida. Vol. 15, No. 2, 1992, pp. 241-261.
Individual evidence
- ^ Jacobi In: Hamburger Garten-Blumenzeitung. 1864, Volume 20, p. 56.
- ↑ Urs Eggli (Ed.): Succulents Lexicon. Monocotyledons . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , pp. 13-14 .
- ↑ Howard Scott Gentry: Agaves of Continental North America . 1982, p. 376 .
- ^ B. Ullrich: On the history of Agave asperrima and Agave scabra (Agavaceae) as well as some taxa of the Parryana . 1992, p. 254 .
