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FOC | Family List | FOC Vol. 4 | Salicaceae | Salix

31. Salix Sect. Subviminales (Seemen) C. K. Schneider, Ill. Handb. Laubholzk. 1: 66. 1904.

细柱柳组 xi zhu liu zu

Salix [unranked] Subviminales Seemen, Salic. Jap. 20. 1903; sect. Gracilistylae C. K. Schneider.

Shrubs rarely creeping. Branchlets at first pilose, glabrescent. Leaf blade obovate, narrowly obovate-oblong, or obovate-elliptic, rarely suborbicular, margin serrate, rarely entire. Flowering precocious. Catkins terete or ellipsoid, sessile; bracts 2-colored or nearly black, ovate to narrowly oblong-lanceolate. Male flower: gland solitary, adaxial; stamens 2, rarely connate throughout, or only filaments connate or partly connate; anthers red. Female flower: ovary densely pubescent, sessile; style slender, rarely short; stigma narrowly oblong.

A. K. Skvortsov indicates that this is a very heterogeneous section. Of it, Salix lanifera, S. myrtillacea, and S. taoensis seem to be more related to sect. Caesiae, while S. obscura may belong to sect. Vimen.

Key based on vegetative characters

1 Shrubs creeping or erect, less than 50 cm tall; leaf blade obovate or elliptic 0.8-1.5 × 0.3-0.8 cm, densely grayish white woolly when young   236 Salix lanifera
+ Shrubs more than 1 m tall; leaf blade longer and larger, not grayish white woolly when young.   (2)
2 (1) Leaves abaxially sericeous, pubescent, or tomentose; branchlets brown, usually tomentose.   (3)
+ Leaves glabrous; branchlets usually glabrous, red or reddish black, shiny.   (4)
3 (2) Leaves serrate at margin, abaxially with prominently raised lateral veins; stipules semiovate   238 Salix gracilistyla
+ Leaves entire at margin, abaxially with inconspicuous lateral veins; stipules small or caducous   235 Salix obscura
4 (2) Leaves entire at margin, blade elliptic or obovate-elliptic   233 Salix rhododendrifolia
+ Leaves usually serrulate at margin, blade obovate-oblong or oblanceolate, rarely obovate-elliptic.   (5)
5 (4) Leaf blade 3-6 × 1-2 cm   234 Salix myrtillacea
+ Leaf blade 2-4 × 0.5-1 cm   237 Salix taoensis

List of Keys

Lower Taxa


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