Fendlera
| Fendlera | ||||||||||||
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Fendlera rupicola |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Fendlera | ||||||||||||
| Engelm. & Gray |
Fendlera is a genus of plants inthe hydrangea family (Hydrangeaceae). The only two species are native to the southern United States and Mexico.
description
Fendlera species grow as deciduous shrubs with ascending to spreading main branches. The bark of its branches is furrowed lengthways. The against-constantly arranged on the branches leaves are stalked recognizable to little. The simple, herbaceous or leathery leaf blades have entire margins.
The stalked flowers stand individually on the branches. The hermaphrodite flowers are radial symmetry and four-fold with a double flower envelope . The four sepals touch each other like a flap (valvat). The four petals , arranged like roof tiles , are spatulate and white.
There are eight stamens . The free stamens are widened, broadly linear, they narrow continuously upwards and have a bilobed upper end. The connective protrudes at the top. The anthers are elongated. The four carpels form a medium-sized, vierkammerigen ovary in which hanging in parietal placentation, anatrope ovule are. The four durable branches of the style are not grown.
The capsule fruit opens at maturity scheidewandspaltig, about 15 to 25 (each subject but less than six) 4 long to 5.5 mm, release not winged seeds.
The number of chromosomes is n = 11.
Occurrence
The distribution area of the genus Fendlera extends from the southwest of the USA to northern Mexico. Fendlera species can be found between bushes or pinyon juniper-pine plant communities on steep slopes or on canyon walls in deserts.
Systematics
The first description of the genus Fendlera was made in 1852 by George Engelmann and Samuel Frederick Gray in Smithsonian Contributions to Knowledge , Volume 3 (5), pp 77-78, Table 5. The generic name Fendlera honors the German-American botanist August Fendler (1813-1883 ).
The genus Fendlera belongs to the subfamily Jamesioideae within the family of Hydrangeaceae . The revision of the genus Fendlera takes place in Volume 12 of the Flora of North America , with the four to five species becoming only two.
There are only two Fendlera species left:
- Fendlera linearis Rehder (Syn .: Fendlera tamaulipana B.L. Turner ): It occurs in the Mexican states of Chihuahua, Coahuila, Nuevo León and Tamaulipas and thrives at altitudes between 1,100 and 1,900 meters in Texas .
- Fendlera rupicola A.Gray (Syn .: Fendlera falcata Thornber , Fendlera wrightii (Engelm. & A.Gray) A.Heller ): It occurs in two varieties in the southwestern USA and in Mexico.
proof
- Craig C. Freeman: Hydrangeaceae preliminary version of 2010 of the not yet published Volume 12, Flora of North America , Provisional Publication of the Flora of North America Association (PDF): Ronald L. McGregor: Fendlera (section description, distribution and systematics)
- L. Hufford: Hydrangeaceae. In: Klaus Kubitzki (Ed.): The Families and Genera of Vascular Plants - Volume VI - Flowering Plants - Dicotyledons - Celastrales, Oxalidales, Rosales, Cornales, Ericales , 2004, p. 209, ISBN 978-3-540-06512- 8th
Individual evidence
- ↑ First publication scanned at biodiversitylibrary.org .
- ^ Fendlera at Tropicos.org. Missouri Botanical Garden, St. Louis
