Fendlera

Fendlera rupicola

Fendlera is a genus of flowering plants in the family of hydrangea plants ( 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 längsgefurcht. The constantly against arranged on the branches leaves are inaudible or barely recognizable stalked. The simple, herbaceous or leathery leaf blades are entire.

The stalked flowers are terminally singly on the branches. The hermaphrodite flowers are radial symmetry and cruciform double perianth. The four sepals touch klappig ( valvat ). The four imbricated petals are spatulate and white.

There are eight stamens present. The free stamens are widened, broadly linear, narrowing it continuously up and have a bilobular upper end. The connective stands out at the top. The anthers are oblong. The four carpels form a medium-sized, vierkammerigen ovary where in parietal placentation hanging, anatrope ovule are. The four branches are non- durable stylus grow.

The fruit capsule opens at maturity scheidewandspaltig to release the 15 to 25 ( per subject but less than six ) 4 to 5.5 mm long, not winged seeds.

The chromosome number is n = 11

Occurrence

The distribution of the genus Fendlera ranges from the southwestern United States to northern Mexico. Fendlera species can be found between shrubs or pinyon juniper - pine plant communities on steep slopes or on canyon walls in deserts.

System

The first description of the genus Fendlera in 1852 by George Engelmann and Samuel Frederick Gray in the Smithsonian Contributions to Knowledge, Volume 3 (5 ), pp. 77-78, Table 5 The genus name Fendlera honors the German-American botanist August Fendler.

The genus belongs to the subfamily Fendlera Jamesioideae within the family of Hydrangeaceae. The revision of the genus Fendlera takes place in Volume 12 of the Flora of North America, there are from four to five species, only two.

There are only two types of Fendlera:

• Fendlera linearis Rehder ( Syn: Fendlera tamaulipana BLTurner ): It occurs in the Mexican states of Chihuahua, Coahuila, Nuevo León, and Tamaulipas and thrives at altitudes 1100-1900 meters in Texas.
• Fendlera rupicola A. Gray ( Syn: Fendlera falcata Thornber, Fendlera wrightii ( Engelm. & A. Gray ) A.Heller ): It occurs with two varieties in the southwestern United States and Mexico.

Evidence

• Craig C. Freeman: Hydrangeaceae prerelease version of 2010 not yet published Volume 12, Flora of North America, Provisional Publication of the Flora of North America Association - Full Text 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, pp. 209, ISBN 978-3-540-06512 - 8