| Salix starkeana | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malpighiales |
| Family: | Salicaceae |
| Genus: | Salix |
| Species: | S. starkeana |
| Binomial name | |
| Salix starkeana | |
Salix starkeana is a small, prostrate shrub from the genus of willows (Salix) with red-brown to purple-red, bare branches and olive-green leaf tops. The natural range of the species is in Europe and in northern Asia.
The pale willow is up to 1 meter high, prostrate to arching ascending shrub with thin, red-brown to purple-red, bare branches. Young shoots are initially hairy and shed later. The leaves are broadly elliptic to semi-kidney-shaped stipules . The petiole is about 5 millimeters long. The leaf blade is 5 to 7 centimeters long, 1.5 to 2 centimeters wide, broadly lanceolate to ovoid or obovate, suddenly pointed, with a narrowed base and a glandular serrated leaf margin. The upper side of the leaf is initially slightly hairy, later balding, weakly shiny, olive-green and nervous. The underside is bare and deep to blue-green. Six to eight pairs of nerves are formed. [1] [2]
1 to 3 centimeters long, elliptical catkins are formed as inflorescences on a 1 centimeter long stalk covered with leaves. The bracts are yellowish or brownish, glabrous and long bearded only on the edge. A nectar gland is formed per flower. Male flowers have two almost bare stamens . The ovary of female flowers is long-stalked and densely hairy. The stylus is formed clearly, the scar is divided gabelig. The pale willow flowers from March to April at the same time as the leaves shoot. [1] [2]
The number of chromosomes is 2n = 38 or 44. [3]
The natural distribution area extends from Northern Europe (Finland, Norway, Sweden) through Central Europe (Germany, Poland, Czech Republic, Slovakia) to Romania and the far east of Russia ( Siberia , Primorye region ). [5] In Germany there are stocks in Bavaria and Baden-Württemberg , the populations in Bavaria being listed as threatened with extinction and in Baden-Württemberg as endangered. [4] The pale willow grows in bogs and swamp areas on boggy and wet peaty soils in sunny to light-shaded locations. The circulation area becomes the winter hardiness zone5a assigned to mean annual minimum temperatures of −28.8 to −26.0 ° C (−20 to −15 ° F). [1]
The pale willow thrives in Central Europe in cold winter, frost-rich areas. It is a character species of the Polygono-viviparo-Nestedum sagittalis from the Violion caninae association, but also occurs in the Molinion association or in the Betulo-Salicetum repentis. [3]
The pale willow (Salix starkeana) is a species from the genus of willows (Salix) in the willow family (Salicaceae). [5] It was described in 1806 by Carl Ludwig Willdenow. [5] The generic name Salix comes from Latin and was already used by the Romans for various types of willow. [6] A synonym of the species is Salix livida Wahlenb. Wahlenb. [2]
Salix aegyptiaca, known as the Persian willow, is a large shrub or small tree from the genus of willow (Salix) with red branches that are tomentose in the first two years and leaves up to 15 centimeters long. The natural range of the species is in the Caucasus and in western Asia. It is cultivated in many countries.
Salix argyracea is a large shrub from the genus of willow (Salix) with up to 10 centimeters long leaf blades with a felty hairy and shiny underside. The natural range of the species is in Kazakhstan, Kyrgyzstan, and China.
Salix argyracea, the smooth willow, is a small shrub from the genus of willow (Salix). It is found in the mountainous areas of several European countries.
Salix capusii is a large shrub from the genus of the willow (Salix) with chestnut-brown branches and 4 to 5 centimeters long, gray-blue leaf blades. The natural range of the species is in Afghanistan, Tajikistan, Pakistan, and China.
Salix cathayana is a strongly branched shrub from the genus of the willow (Salix) with brown or gray-brown, young tomentose hairy branches. The leaf blades have lengths of 1.5 to 5.2 centimeters. The natural range of the species is in the north of China.
Salix balfouriana is a shrub or small tree from the genus of willow (Salix) with reddish black and tomentose hairy young twigs and up to 8 leaf blades, rarely 18 centimeters long. The natural range of the species is in China.
Salix appendiculata is a plant from the willow genus (Salix). They can be found in France, Italy, Central and Eastern Europe, and on the Balkan Peninsula.
Salix caesia is a small shrub in the genus Salix, the willows. It is widespread, mainly in Asia.
Salix annulifera is a small shrub from the genus of the willow (Salix) with up to 8 centimeter long leaf blades. The natural range of the species is in China.
Salix boseensis is a shrub from the genus of willow (Salix) with initially brownish, frosted and bare branches and 6 to 9 centimeters long leaf blades. The natural range of the species is in China.
Salix anticecrenata is a low, pillow-shaped shrub from the genus of willow (Salix) with about 1.5 centimeters long leaf blades. The natural range of the species is in Nepal and China.
Salix atopantha is a small shrub from the genus of the willow (Salix) with up to 4 centimeters long, dull brown leaf blades on top. The natural range of the species is in China.
Salix bhutanensis is a shrub or small tree from the genus of willow (Salix) found in Nepal, Bhutan, and Tibet. It has young, densely brownish green tomentose hairy branches and 3 to 5.5 centimeters long leaf blades.
Salix chingiana is a small tree in the willow genus Salix with dull purple-colored, bare branches. The stipules are permanent, the leaf blades are 7 to 10 centimeters long. The natural range of the species is in China.
Salix contortiapiculata is a tall shrub from the genus of willow (Salix) with 5 to 9 centimeter long leaf blades. The natural range of the species is in China.
Salix cavaleriei is a large tree from the genus of willow (Salix) with a gray-brown, furrowed bark. The leaf blades have lengths of 4 to 11 centimeters. The natural range of the species is in China. It is planted for logging and for fastening embankments.
Salix characta is a shrub from the genus of willow (Salix) with initially downy hairy branches. The leaf blades have lengths of 3.5 to sometimes 7 centimeters. The natural range of the species is in China.
Salix cheilophila is a shrub or small tree from the genus of willow (Salix) with initially tomentose hairy and later balding branches. The leaf blades have lengths of 2.5 to sometimes 6 centimeters. The natural range of the species is in China.
Salix cupularis is a small shrub from the genus of the willow (Salix) with 1.5 to 2.7 centimeters long leaf blades. The natural range of the species is in China.
Salix blakii is a willow (Salix) shrub with thin, brownish and bare branches and 4 to 8 centimeters long leaf blades. The natural range of the species extends from Southwest Asia to China.
