Albuca bakeri
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Onion and inflorescence of Albuca bakeri |
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| Albuca bakeri | ||||||||||||
| Mart.-Azorín & MBCrespo |
Albuca bakeri is a plant of the genus Albuca in the family of asparagaceae (Asparagaceae). It occurs only in the Capensis in southern South Africa .
description
Vegetative characteristics
Albuca caudata grows as an evergreen or deciduous, perennial herbaceous plant . The mostly single, underground onion is egg-shaped to spherical with a length of 3.2 to 7 centimeters and a diameter of 2.5 to 6.5 centimeters. The upper part of the onion is extended to an above-ground neck up to 10 centimeters long and 2 centimeters thick and is covered with membranous lower leaves . These lower leaves are whitish in the upper part and pale to dark brown in the lower part. The whitish outer skin of the onions is fleshy. The white, narrow, fleshy roots are up to 9 inches long and 0.2 inches thick.
The two to six leaves that appear before the flowering period are arranged in a rosette and are initially upright, but bend down with increasing age. The rolled up leaf blade is linear-lanceolate to oblong with a length of 9 to 40 centimeters and a width of 0.4 to 1.3 centimeters. The leaf blades are pale green to blue-green in color and, with the exception of the fine and warty hairy leaf veins and leaf margins, glabrous.
Inflorescence and flower
The flowering period of Albuca bakeri extends from July to September. The inflorescence stem is 9 to 22 inches long. The upright, racemose to almost umbrella- shaped inflorescence is 3 to 15 centimeters long. 0.2 to 7.5 centimeter long pedicels are at the base of the inflorescence is longer at the top. The white bracts are ovate-lanceolate to triangular with a length of 0.9 to 2.7 centimeters and a width of 0.4 to 1 centimeter.
The upright, hermaphrodite flowers are radial symmetry and threefold. The six bracts are white and have a 0.2 to 0.3 centimeter wide, green central stripe and, occasionally, a yellowish tip. The outer bracts are elongated-lanceolate with a length of 1.9 to 2.3 centimeters and a width of 0.5 to 0.7 centimeters and have a somewhat cap-shaped upper end. The inner bracts are egg-shaped with a length of 1.3 to 1.7 centimeters and a width of 0.6 to 0.7 centimeters and have a strongly cap-shaped upper end. All six stamens are fertile. The outer stamens are linear-lanceolate to approximately elongated with a length of 1 to 1.35 centimeters. The inner stamens are linear-elongated with a length of 1.05 to 1.45 centimeters. The outer anthers are 1.5 to 3 millimeters and the inner anthers are 4 to 6 millimeters in size. The stalked draft tube ovary is oblong to obovate, with a length of 0.6 to 0.7 centimeters and a width of 0.2 to 0.35 centimeters. The club-shaped or inverted-conical-pyramidal stylus is 0.7 to 1.1 centimeters long. The scar is yellowish green.
Fruit and seeds
The triangular, loculicidal capsule fruits are triple and egg-shaped with a length of 1.4 to 1.6 centimeters and a diameter of 1.1 to 1.2 centimeters. When they ripen in late September to November, the fruits are pale brown in color. The flat, dark brown to black seeds are 0.4 to 0.5 inches long and 0.3 to 0.4 inches wide.
Occurrence
The natural range of Albuca bakeri is in the South African provinces of the Eastern Cape and Western Cape . It extends in the Eastern Cape from Jansenville in the west to Alice and the Keiskamma River in the east. The deposits in the Western Cape are far removed from those in the Eastern Cape and are located near Calitzdorp .
Albuca bakeri thrives at altitudes of up to 650 meters. Albuca bakeri mostly grows in the Karoo on open, dry and stony areas.
Taxonomy
The first description as Albuca bakeri was in 2011 by Mario Martínez-Azorín and Manuel Benito Crespo in PhytoKeys . The specific epithet bakeri honors the British botanist John Gilbert Baker .
swell
- Mario Martínez-Azorín, Manuel B. Crespo1, Anthony P. Dold, Nigel P. Barker: The identity of Albuca caudata Jacq. (Hyacinthaceae) and a description of a new related species: A. bakeri . In: PhytoKeys . No. 5 , 2011, ISSN 1314-2003 , p. 5-19 , doi : 10.3897 / phytokeys.5.1166 .
Individual evidence
- ↑ a b c d e f g h Mario Martínez-Azorín, Manuel B. Crespo, Anthony P. Dold, Nigel P. Barker: The identity of Albuca caudata Jacq. (Hyacinthaceae) and a description of a new related species: A. bakeri . In: PhytoKeys . No. 5 , 2011, ISSN 1314-2003 , p. 5-19 , doi : 10.3897 / phytokeys.5.1166 .
