Appendix 3 Rare sightings (in Belgium)
Salix appendiculata:
This mountain willow grows up to 6 m high. New twigs are still hairy, later (2 years) they are bare. The hairy buds are often yellow to red-orange and grow up to 6 mm long. Almost no striae. Leaves oblong to inverted ovate. Top bare and shiny, underside downy hairy. L 5-12 (!) cm, W 2-5 (!) cm. Broadest in upper half. Leaf margin smooth, sometimes wavy. Perennial and remarkable supporting leaves on the short petiole. Short male catkins have 2 stamens. Longer female catkins. Catkins develop along with the leaves.
May cross with other taxa of the subgenus vetrix.
Salix bicolor syn. phylicifolia syn. schraderiana
This one will be described soon. Photos already available.
Salix caesia
Photos available.
Salix x calliantha (Salix daphnoides x S. purpurea)
Photos available.
Salix cantabrica
Has striae. Photos available.
Salix (caprea x udensis 'Sekka') x S. x bögelsackii
Photos available.
Salix eleagnos (wild form, syn. Salix incana):
Leaf linear or linear lanceolate; 6-9 cm L; 0.6-1.2 cm W (remarkably broader than ssp. angustifolia); upper surface dark green, lower surface perennially white-dark, visible veins; leaf margin somewhat involute and usually crenate; young twigs pale green and hairy, older twigs dark green and glabrous. Resembles Salix viminalis but it has silky hairs on the underside of the leaves. Has not yet been observed in Belgium, but occurs in France, Slovenia, region Alps.
Salix fargesii
Photos available
Salix glaucophylloides
Photos available
Salix integra (wild form) :
Leaf oblong oval to ovate; 2-4.5 cm L, 0.9-1.8 cm W; leaf margin serrate in upper half; very short petiole, it looks like sessile leaves; leaves much opposite; conspicuous white central vein on older leaves; young leaves have a purple central vein; leaf tip obtuse or very short pointed; young twigs pale green, the older grey-brown; the leaves have a bitter taste. Shrubby to 1.5 m H.
Salix x leucopithecia 'Snowflake' (S. gracilistyla x caprea), syn. 'Winterglory', S. bakko x gracilistyla, 'Giant Pussy Willow', etc.
Upright tree up to 6m high. Young leaves are shiny olive green on top, grayish and softly hairy on the underside; shape long-elliptical. Petioles and twigs reddish on the sunny side, green in the shade. Buds like gracilistyla (larger than caprea), reddish on the sunny side in autumn. Male catkins with red anthers at maturity.
There are several cultivars.
Salix pyrifolia (syn. S. balsamifera Mas) :
Leaf oblong oval to triangular; margin serrate-toothed but scanty towards the apex; greatest width approximately in the middle; length short-lot 28-68 mm; length long-lot 60-112 mm; width short-lot 11-26 mm; width long-lot 30-43 mm; heart-shaped leaf base; remarkably large stipules on long-lot: length up to 21 mm, width up to 11 mm, ear-shaped; no hairs on upper and lower surface; sea-green colour underneath leaf , darker on top; middle vein dirty yellow and conspicuous; turns brown on drying. Bare twigs, pale green young twigs and brown to grey-brown on older twigs. Striae: pointed and 2 mm framing. Creeping shrub up to 2 m high.
Salix repens ssp. rosmarinifolia
Photos available.
Salix x seringeana (a cross of S. caprea with eleagnos) :
The leaves are glossy dark green on top and grey-felted on the underside; the veins underneath are clearly visible; oblong/lanceolate leaf shape with a pointed and short top. The leaf margin is finely serrate or toothed. A tall shrub with felty young twigs.
Salix silesiaca
Photos available.
Salix triandra clone 'Semperflorens' :
Similar to the clone 'Bruingrijze wis' in terms of leaf shape and size. The edges of the mature green-blue leaves are slightly corrugated and pseudo-stipules (often briefly) are visible at the top of the petiole, up to 17 mm long. Branch colour from green-grey on older twigs to light green on long shoots. 'Semperflorens' can reach a height of 6 m.
Because the male catkins are continuous-flowering, these willows are often planted by beekeepers.
Salix 'Swimming pool' willow
With reservations, a triple cross caprea - cinerea or aurita - viminalis or gmelinii. Origin Aalst (Belgium) swimming pool park, hence the provisional name. It could be a 'male S. x calodendron'.
