Salix nivalis Hook.
Salix reticulata, the net-leaved willow, is a dwarf willow, native to the colder parts of Northern Europe, North America, and Northern Asia. It is found in the western United States (Salix reticulata subsp. nivalis), including the Sierra Nevada and Rocky Mountains. In Europe it extends south through the Carpathian Mountains and Alps to the Pyrenees and the mountains of Macedonia.   It is common in Canada, Greenland and Finland, and present but rare in Scotland. 
The plant grows on wet, often slightly calcareous, rocks and ledges. 
Salix reticulata is a dwarf, prostrate, deciduous shrub growing to 8 cm (3 in) tall by 30 cm (12 in) broad, forming loose open mats with extensive, much-branched, underground stems. The exposed stems can rise to 20 cm (7.9 in) high. The twigs are slightly hairy at first, then hairless and dark reddish-brown later.
Leaves are 1.2cm to 5 cm long, 1 to 3.5 cm wide; densely hairy at first, becoming hairless at least on the upper side. The leaves have a conspicuous network of veins.
- Species account from ARS Germplasm Resources Information Network (GRIN) . accessed 5.14.2013
- New Flora of the British Isles; Clive Stace; Third edition; 2011 printing.
- Willows and Poplars of Great Britain and Ireland, BSBI Handbook No. 4; Meikle; 1984.
- RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964.
- "RHS Plant Selector - Salix reticulata". Retrieved 02 June 2013.
|Wikimedia Commons has media related to Salix reticulata.|
- USDA Plants Profile for Salix reticulata (netleaf willow)
- http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?7038,7045,0,7073 Jepson Manual Treatment: Salix reticulata subsp. nivalis]