Agave parviflora
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Agave parviflora in southern Arizona |
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Agave parviflora is a plant from the genus of the Agave ( agave ). The specific epithet parviflora is derived from the Latin words parvus for 'small' and -florus for '-blütig'. Agave parviflora has the smallest flowers in the genus. An English common name is "Smallflower Century Plant".
description
Agave parviflora grows solitary or with many heads. With a diameter of 15 to 40 centimeters, the small rosette of leaves reaches heights of 10 to 15 centimeters. The green leaf blade is 6 to 15 inches long and 0.8 to 1.6 inches wide. It is drawn with striking white stripes. There are white fibers on the leaf margins. The weak awkward end thorn is 5 to 8 millimeters long.
The loosely to densely flowered, "eared" inflorescence in the upper half reaches a height of 1 to 2.1 meters. The partial inflorescences bear 12 to 18 millimeters long pale yellow to light greenish-yellow flowers . The 4 to 8 millimeter long ovary has a 1 to 2 millimeter long neck. The perigon tube has a length of 5 to 7 millimeters. Their tips are 2 to 3 millimeters long and 1.5 to 4 millimeters wide.
The spherical, sessile to short stalked, short beaked capsule fruits are 6 to 8 millimeters long and 6 to 10 millimeters wide. They contain seeds 3 to 3.5 millimeters long and 2 to 2.5 millimeters wide.
Systematics and distribution
Agave parviflora is common in the United States in the state of Arizona and in the Mexican state of Sonora on stony slopes, in grasslands and open woodlands at altitudes of 650 to 1500 meters. It is associated with Yucca schottii and various types of cacti.
The first description by John Torrey was published in 1859. A synonym is Agave hartmanii S. Watson (1891).
The following subspecies are distinguished:
- Agave parviflora subsp. parviflora
- Agave parviflora subsp. densiflora G.D. Starr & T. Van Devender
- Agave parviflora subsp. flexiflora Gentry
The species belongs to the subgenus Littaea and is assigned to the Parviflorae group there.
Danger
At the request of the United States, Agave parviflora was included in Appendix I of the Washington Convention on Endangered Species on July 29, 1983 .
proof
literature
- Howard Scott Gentry : Agave parviflora . In: Agaves of Continental North America . The University of Arizona Press, 1982, pp. 200-201.
- Greg Starr, Thomas R. van Devender: Agave parviflora subspecies densiflora. A newly found treasure from the Sierra Madre in Eastern Sonora, Mexico . In: Cactus and Succulent Journal . Volume 83, Number 5, Cactus and Succulent Society of America, 2011, p. 227 ( DOI: 10.2985 / 0007-9367-83.5.224 ).
- Joachim Thiede: Agave parviflora . In: Urs Eggli (Hrsg.): Succulent lexicon. Monocotyledons . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , pp. 53-54 .
Individual evidence
- ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 178.
- ↑ John Torrey: Botany of the Boundary . In: Report on the United States and Mexican boundary survey, made under the direction of the secretary of the Interior, by William H. Emory . Volume 2, Washington 1859, p. 214 ( online ).
- ^ Sereno Watson: Contributions to American Botany . In: Proceedings of the American Academy of Arts and Sciences . Volume 26, 1891, pp. 156-163 ( online ).
- ^ Greg Starr, Thomas R. van Devender: Agave parviflora subspecies densiflora. A newly found treasure from the Sierra Madre in Eastern Sonora, Mexico . In: Cactus and Succulent Journal . Volume 83, Number 5, Cactus and Succulent Society of America, 2011, pp. 224-231 ( DOI: 10.2985 / 0007-9367-83.5.224 ).
- ^ Proposals for amendment of Appendices I and II: Agave parviflora . CoP4 Prop. 59 ( online , accessed December 28, 2015).
- ↑ Entry ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. in the CITES species database (accessed June 11, 2012).
Further literature
- August J. Spread: Agave parviflora . In: The Agaves . The Cactus & Succulent Journal Yearbook, Abbey Garden Press, 1968, p. 28.
- James L. Reveal, Wendy C. Hodgson: Agave parviflora . In: Flora of North America . Oxford University Press, 2002, pp. 446-447 ( online ).
