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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.
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Key based on vegetative characters
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| 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 |
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236 Salix lanifera |
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Shrubs more than 1 m tall; leaf blade longer and larger, not grayish white woolly when young. |
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(2) |
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| 2 (1) |
Leaves abaxially sericeous, pubescent, or tomentose; branchlets brown, usually tomentose. |
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(3) |
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Leaves glabrous; branchlets usually glabrous, red or reddish black, shiny. |
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(4) |
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| 3 (2) |
Leaves serrate at margin, abaxially with prominently raised lateral veins; stipules semiovate |
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238 Salix gracilistyla |
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Leaves entire at margin, abaxially with inconspicuous lateral veins; stipules small or caducous |
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235 Salix obscura |
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| 4 (2) |
Leaves entire at margin, blade elliptic or obovate-elliptic |
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233 Salix rhododendrifolia |
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Leaves usually serrulate at margin, blade obovate-oblong or oblanceolate, rarely obovate-elliptic. |
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(5) |
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| 5 (4) |
Leaf blade 3-6 × 1-2 cm |
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234 Salix myrtillacea |
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Leaf blade 2-4 × 0.5-1 cm |
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237 Salix taoensis |
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List of Keys
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Lower Taxa
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Treatments in Other Floras @ www.efloras.org
Other Databases
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