Agave bulliana

Agave bulliana
Systematics
Order :	Asparagales (Asparagales)
Family :	Asparagaceae (Asparagaceae)
Subfamily :	Agave family (Agavoideae)
Genre :	Agaves ( agave )
Subgenus :	Manfreda
Type :	Agave bulliana
Scientific name
	Agave bulliana
	( Baker ) Thiede & Eggli

Agave bulliana is a species of plant from the genus of agaves ( Agave ) in the subfamily of the agave family (Agavoideae). The specific epithet bulliana honors the plant dealer William Bull (1828–1902) from Chelsea .

description

Agave bulliana usually grows individually. Their semi-fleshy roots have a wiry center. The cylindrical rhizomes are 1 to 3 inches long and 1.5 to 2.5 inches wide. The two to four (rarely one to five) paper-like, thin and fibrous leaves are erect or occasionally bent back slightly from the center. Often they are twisted. The leaves have a clear central rib and are slightly runny above this. The flat, broadly wavy or rolled back leaf blade is linear-lanceolate to inverted lanceolate and narrowed towards its base. It is 20 to 47 (rarely up to 62) centimeters long and 1.3 to 5.2 (rarely 0.7 to 6.9) centimeters wide. Their light to dark green surface is matt, often spotted magenta towards the base and can be spotted. The papillate leaf veins protrude slightly on both leaf sides. The fibers on the old leaf bases are 7 to 10 (rarely up to 12.5) centimeters long. The very narrow leaf margins are hyaline, papillate to gnawed papillate or papillate-serrate.

The "eared" inflorescence reaches a height of 90 to 200 centimeters and more. The elongated flower-bearing part is 17.5 to 47 (rarely 9 to 83.5) centimeters long and has four to 22 blooming nodes with flowers arranged in pairs . Your flower stalk has a length of 3 to 46 (rarely up to 68) millimeters. The flowers are functionally drooping due to an abrupt bend in the perigone tube. The ellipsoid ovary is 4 to 8 (rarely up to 12) millimeters long. The tepals are white, gray-green or cloudy green and tinged with red on the outside. Inside they are white or cream colored. The tube is curved in the middle or a third above the ovary. It is narrow at the bottom, expanded abruptly above the bend and 15 to 27 (rarely from 11) millimeters long. The spread, broadly triangular tips have a length of 4 to 9 (rarely 3 to 10) millimeters. The stylus is as long as the tube, or longer. The flowering period extends from late July to early September.

The fruits have a length of 1 to 1.9 centimeters and a width of 1 to 1.4 centimeters. They contain seeds 2.5 to 3 millimeters long and 3.4 to 4 millimeters wide .

Systematics and distribution

Agave bulliana is widespread in the Mexican states of Durango , Aguascalientes , Jalisco , Nayarit , Michoacán and Zacatecas on dry rock slopes and cuttings, in pine-oak grasslands or in shady, moist ravines at altitudes of 1150 to 3100 meters.

The first description as Polianthes mexicana by Joseph Gerhard Zuccarini was published in 1837. Joachim Thiede and Urs Eggli placed the species in the genus Agave in 1999 . Since the species Agave mexicana Lam. (1783) existed, they derived the new name from the second oldest synonym Bravoa bulliana Baker (1884). Further synonyms are Prochnyanthes bulliana (Baker) Baker (1895), Prochnyanthes mexicana (Zucc.) Rose (1903) and Prochnyanthes viridescens S. Watson (1887).

The species belongs to the subgenus Manfreda and is the only species assigned to the Prochnyanthes group.

proof

literature

Joachim Thiede: Agave bulliana . In: Urs Eggli (Hrsg.): Succulent lexicon. Monocotyledons . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , pp. 18-19 .

Individual evidence

↑ Plantarum novarum vel minus cognitarum, quae in horto botanico herbarioque regio Monacensi servantur. Secundus fasciculus . In: Treatises of the Mathematical-Physical Class of the Royal Bavarian Academy of Sciences . Volume 2, Munich 1837, pp. 319-320 (online) .
↑ Joachim Thiede, Urs Eggli: Inclusion of Manfreda Salisbury, Polianthes Linné and Prochnyanthes S. Watson in Agave Linné (Agavaceae) . In: Cacti and other succulents . Volume 50, Number 5, 1999, pp. 109-113 (online) .
^ Jean-Baptiste de Lamarck: Encyclopédie Méthodique: Botanique . Volume 1, Part 1, Paris 1783, p. 52 (online) .
^ The Gardeners' Chronicle: A weekly illustrated Journal of Horticulture and allied Subjects . 2nd episode, Volume 22, 1884, p. 328 (online) .
^ Curtis's Botanical Magazine . Volume 121, number 608, 1895, plate 7427 (online) .
^ Joseph Nelson Rose: Studies of Mexican and Central American Plants - No. 3 . In: Contributions from the United States National Herbarium . Volume 8, Part 1, 1903, p. 14 (online) .
^ Sereno Watson: Contributions to American Botany . In: Proceedings of the American Academy of Arts and Sciences . Volume 22, 1887, pp. 457-458 (online) .

Web links

photos

[1] Plantarum novarum vel minus cognitarum, quae in horto botanico herbarioque regio Monacensi servantur. Secundus fasciculus . In: Treatises of the Mathematical-Physical Class of the Royal Bavarian Academy of Sciences . Volume 2, Munich 1837, pp. 319-320 (online) .

[2] Joachim Thiede, Urs Eggli: Inclusion of Manfreda Salisbury, Polianthes Linné and Prochnyanthes S. Watson in Agave Linné (Agavaceae) . In: Cacti and other succulents . Volume 50, Number 5, 1999, pp. 109-113 (online) .

[3] Jean-Baptiste de Lamarck: Encyclopédie Méthodique: Botanique . Volume 1, Part 1, Paris 1783, p. 52 (online) .

[4] The Gardeners' Chronicle: A weekly illustrated Journal of Horticulture and allied Subjects . 2nd episode, Volume 22, 1884, p. 328 (online) .

[5] Curtis's Botanical Magazine . Volume 121, number 608, 1895, plate 7427 (online) .

[6] Joseph Nelson Rose: Studies of Mexican and Central American Plants - No. 3 . In: Contributions from the United States National Herbarium . Volume 8, Part 1, 1903, p. 14 (online) .

[7] Sereno Watson: Contributions to American Botany . In: Proceedings of the American Academy of Arts and Sciences . Volume 22, 1887, pp. 457-458 (online) .