Pintoa chilensis
| Pintoa chilensis | ||||||||||||
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Pintoa chilensis |
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| Scientific name of the genus | ||||||||||||
| Pintoa | ||||||||||||
| Gay | ||||||||||||
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| Pintoa chilensis | ||||||||||||
| Gay |
Pintoa chilensis is the only kind of the plant genus Pintoa within the family of the zygophyllaceae . This endemic occurs only in the Atacama Desert .
description
Vegetative characteristics
In Pintoa chilensis is low, rich branched shrub to 1.5 m height. Its branches are stiff and tomentose and have thickened nodes. At the base of the opposite leaves there are broad-skinned stipules. The leaves are pinnate in pairs with four to six pairs of lateral leaflets, the central main axis ends in a 1–2 millimeter long tip. The leaflets are asymmetrical, densely hairy and dotted with black dots on the underside.
Generative characteristics
The flowers are solitary in the leaf axils. The inflorescence consists of five sepals and 5 petals . The corollas are bright yellow and about 2 centimeters in diameter. There are 10 unequal stamens with broad basal scales. The five-fan ovary narrows into a style with a simple stigma . The fruit is a five-lobed, spherical-elongated capsule fruit about 1 centimeter in diameter. There are several flattened seeds in each of the five compartments.
The number of chromosomes is 2n = 20.
Occurrence
Pintoa chilensis is endemic to Chile . The main distribution is in the Atacama Desert, especially in the southern part. There are also some disjoint locations.
Systematics
The genus Pintoa was established in 1845/46 with the first description of Pintoa chilensis by Claude Gay in Flora Chilena , Volume 1 (4).
literature
- Mary Clare Sheahan: Zygophyllaceae. In: Klaus Kubitzki (Ed.): The Families and Genera of Vascular Plants. Vol. 9, Springer, 2006, ISBN 3-540-32214-0 , pp. 488-500, here p. 495.
Individual evidence
- ^ M. Hassler: World Plants: Synonymic Checklists of the Vascular Plants of the World (version Apr 2018). In: Y. Roskov et al .: Species 2000 & ITIS Catalog of Life, 31st July 2018. 2018, Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858 . Pintoa chilensis , accessed September 10, 2018.
- ↑ Distribution map of Pintoa chilensis on patagoniawildflowers.org.
- ↑ Claude Gay: Flora Chilena. 1 (4), pp. 479-481. 1845 [1846], first description of Pintoa (p. 479) and Pintoa chilensis (p. 480) on biodiversitylibrary.org.
