Puya mirabilis
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Puya mirabilis |
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| ( Mez ) LBSm. |
The Puya mirabilis is a species of the bromeliad family (Bromeliaceae). It occurs in Bolivia and northwest Argentina .
description
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Appearance and leaf
Puya mirabilis grows as an evergreen, perennial herbaceous plant that reaches heights of 1 to 1.5 meters with its inflorescence. It lives terrestrially and is somewhat xerophytic . Many leaves stand together in a leaf rosette without a trunk being formed. After the seed and child development , the mother plant slowly dies.
The tough, parallel- veined leaves are divided into leaf sheath and leaf blade. The white to brownish, relatively thick, durable leaf sheath is 3 to 4 centimeters wide and egg-shaped with a length and width of 3 to 4 centimeters with a finely serrated edge. The leaf sheaths are preserved for a long time and form a bulbous protective covering on the plant base. The simple, early balding leaf blade is 60 to 70 centimeters long and 1 to 1.5 centimeters wide at the base of the blade and is narrow-linear with a long, pointed upper end. The leaf margin is coarse, prickly serrated. The underside and the upper side of the leaf are only covered with gray when pressed on the lower half.
Inflorescence and flower
For Puya species, an inflorescence is formed after a relatively few years. The upright, strong inflorescence stem has a length of 90 centimeters and a round cross-section with a diameter of about 1 centimeter. The initially green, but early drying bracts on the inflorescence stem are similar to the foliage leaves and prickly on the edge, the lower ones being long and turned back and the upper ones being upright and short, but longer than the axis segments in between. The upright, simple, so unbranched, loose, racemose inflorescence has a length of 30 to 50 centimeters and a diameter of 16 centimeters and some flowers. The early drying, almost upright to spreading bracts are triangular, broadly ovate-elliptical with a pointed upper end, long pointed with a thorny edge and with a length of 3 to 4 centimeters shorter than the sepals, but longer than the flower stalks. The 1.2 to 1.5 cm long peduncle is initially almost upright and curves downwards after pollination .
The hermaphrodite flower is threefold with a double flower envelope . The three green, gray-scaled, relatively thick, leathery sepals are somewhat asymmetrical, about 5 to almost 6 centimeters long and about 1 centimeter wide and almost triangular with an indistinctly pointed upper end. The three greenish-yellow, bare petals are about 10 centimeters long and about 2 centimeters wide and twist in a spiral as they fade. The six free stamens have about 15 millimeters long, yellow anthers and are slightly shorter than the petals. Three fruit leaves are to a semi Upper permanent ovary grown.
Fruit and seeds
The capsule fruits contain many seeds. The small seeds are capable of flying.
Occurrence
The home of Puya mirabilis are the Bolivian departments of Cochabamba and Tarija and the Argentine provinces of Salta and Tucumán . Puya mirabilis rocky slopes at altitudes between 750 and 2590 meters.
Systematics
The first description was made in 1906 under the name ( Basionym ) Pitcairnia mirabilis by Carl Christian Mez in repertory specierum Novarum Regni Vegetabilis , volume 3, page 6. with the bus number 2320 in the Herbarium Berolinense deposited Holotypusmaterial was from Karl Fiebrig (1869-1951) on Collected February 4, 1904 on the Bermejo River in the Arce Province in the Tarija Department in Bolivia. The new combination to Puya mirabilis (Mez) LBSm. was published in 1968 by Lyman B. Smith in Phytologia , Volume 16, Issue 6, p. 461. Another synonyms for Puya mirabilis is Pitcairnia mirabilis var. Tucumana A.Cast., Because it differed from the nominate form only in its height, but there are transitional forms in all sizes. The specific epithet mirabilis means “wonderful” and refers to the relatively large flowers.
Puya mirabilis belongs to the subgenus Puyopsis in the genus Puya .
use
Puya mirabilis is one of the few Puya species that are cultivated in many botanical gardens and some private collections. The seeds germinate well, it is easy to care for in bright locations and also blooms.
swell
- Eric J. Gouda, Derek Butcher & Kees Gouda: Encyclopaedia of Bromeliads , Version 3.1 (2012). In “Species Index” click on Puya , then on the species; last viewed on September 2, 2013 (sections systematics and distribution)
literature
- Werner Rauh : Bromeliads - Tillandsias and other culturally worthy bromeliads , Verlag Eugen Ulmer, Stuttgart 1990, ISBN 3-8001-6371-3 . P. 439 (Sections Description, Occurrence and Use)
- Lyman Bradford Smith & Robert Jack Downs: Pitcairnioideae (Bromeliaceae) in Flora Neotropica , Volume 14, 1, Hafner Press, New York, 1974, p. 124 (sections description, occurrence and systematics)
- Lyman Bradford Smith: The Bromeliaceae of Bolivia , In: Rhodora , Volume 71, 1969, p. 50. scanned at biodiversitylibrary.org . (Sections Description, Occurrence and Systematics)
- SE Gómez Romero & A. Grau: Las especies de Puya (Bromeliaceae) en la Argentina , In: Boletín de la Sociedad Argentina de Botánica , Tomo 44, 2009, pp. 175-208.
- Carl Christian Mez : Repertorium Specierum Novarum Regni Vegetabilis , Volume 3, p. 6. scanned at biodiversitylibrary.org . (Sections Description and Systematics)
Individual evidence
- ↑ First publication scanned at biodiversitylibrary.org .
- ↑ New combination scanned at biodiversitylibrary.org .
- ↑ Puya mirabilis at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed September 2, 2013.
