Salicaceae 



365 



leaves with white-villous petioles about 5 mm. long, the blades 

 lanceolate, to 10 cm. long and 2.2 cm. wide, short-acuminate, 

 serrulate, rounded at base, sparingly pubescent above at first, 

 becoming glabrous, densely pubescent beneath at first, later 

 sparingly so, the lateral nerves many; aments appearing with 

 die leaves, the pistillate 1-1.5 cm. long, short-pedunculate, the 

 bracts ovate, sparsely hairy on outer side, rounded at apex; 

 ovary white-villous, sessile; style elongate, glabrous; staminate 

 aments 1.5-2.5 cm. long, about 7 mm. across, the filaments 

 long-hairy at base. Honshu (Kinki and Chijgoku Distr.). 



8. Salix jessoensis Seemen. S. hotuloensis Koidz. 



Shiro-yanagi. Tree with brownish branches, the branch- 

 lets densely short-pubescent with grayish hairs; leaves with 

 pubescent petioles 2-5 mm. long, the blades lanceolate or 

 narrowly so, 5-10 cm. long, 8-15 mm. wide, long-acuminate, 

 serrulate, the juvenile ones glaucous and densely appressed 

 silky-pubescent but only sparingly so when mature; aments 

 short-pedunculate, the staminate 2-3 cm. long, rather loosely 

 flowered, the bracts oblong, rather densely hairy near base, the 

 filaments hairy below, the pistillate 3^.5 cm. long, densely 

 flowered, the bracts retuse to obtuse; ovary pubescent; style 



very short or almost absent, the stigma oblong, entire. 



Hokkaido, Honshu. 



9. SalLx koreensis Anderss. S. pseudojessoensis Lev. 



KoRAi-YANAGi. Trees with grayish brown or brownish 



green branches, the branchlets glabrous or short-pubescent; 

 leaves with glabrous petioles 5-10 mm. long, the blades lan- 

 ceolate, 8-13 cm. long, 12-25 mm. wide, acuminate, serrulate, 

 rounded to acute at base, glabrous on both sides except the 

 midrib, glaucous beneath; staminate aments 1-3 cm. long, 6-7 

 mm. across, densely flowered, die bracts ovate-oblong, obtuse, 

 about 2 mm. long, long white-hairy; anthers reddish brown, 

 the filaments hairy below, the pistillate aments 7-15 mm. 

 long, densely flowered; ovary villous, sessile, the style relatively 



long, the stigma bifid. Honshu (western distr.), Kyushu. 



Korea and Manchuria. 



10. Salix pauciflora Koidz. Ezo-mame-yanagi. Small 

 prostrate shrub with slender branchlets, short-pubescent, chang- 

 ing to red-brown in age; leaves with pubescent petioles 1-4 

 mm. long, the blades thinly coriaceous, obovate to elliptic, 

 sometimes nearly rounded, 6-12 mm. long, 3-10 mm. wide, en- 

 tire, subacute to obtuse or rounded at base, lustrous and gla- 

 brous above, pale green and sparsely long-pubescent on mid- 

 rib beneath, glabrous or short-pubescent on margin; staminate 

 aments globose, 5- to 30-flowered, terminal on short lateral 

 branchlets, leafy below, 3-10 mm. long, the bracts obovate, 

 rounded at apex, reddish on upper half, hairy on margin and 

 inner side, glabrescent outside, 1.2-2.2 mm. long; filaments 

 free, glabrous; pistillate aments 5- to 30-flowered, 13-17 mm. 

 long in fruit; capsules about 5 mm. long, glabrous, stipitate; 

 style short, the stigmas very short, bifid. July-Aug. Al- 

 pine slopes; Hokkaido (Mount Daisetsu). Forma hebe- 



carpa Kimura. Ovary pubescent. Occurs with the typical 

 phase. 



11. Salix hidakamontana Hara. Hidaka-mine-yanagi. 

 Low shrub 10-20 cm. high, with decumbent branches, the 

 branchlets silky-pubescent while young; leaves with petioles 

 1-2.5 cm. long, the blades rounded to elliptic, 2-4 cm. long, 

 1.5-3.5 cm. wide, sometimes retuse at apex, rounded to shal- 

 lowly cordate at base, entire or with obsolete undulate teedi, 

 glabrous, glaucous, the veins and veinlets raised reticulate be- 

 neath, impressed above; pistillate aments terminal on short 



leafy branchlets, densely flowered, 2-5 cm. long in fruit, the 

 bracts ovate or oblong, obtuse or subacute, 1-1.5 mm. long, 

 silky villous; capsules narrowly ovoid, 4-6 mm. long, glabrous, 

 subscssile. Alpine regions; Hokkaido (Hidaka mt. range). 



12. Salix nakamurana Koidz. Renge-iwa-yanagi, Ta- 

 KANE-rwA-YANAGi. Small prostrate shrub with rooting 

 branches, the branchlets at first slightly silky, soon glabrate, 

 changing to dark purple-brown in age; leaves with glabrous 

 petioles, the blades elliptic or obovate, sometimes oblong, 

 2-A cm. long, 1-3 cm. wide, rounded or sometimes obtuse at 

 apex, obtuse to acute at base, entire or with remote obsolete 

 teeth, glaucous beneath, the lateral nerves prominently arcuate 

 above; aments 2.5-4 cm. long, on short lateral branches, the 

 bracts narrowly ovate or oblong, subobtuse to nearly rounded 

 at apex, black-brown above, hairy on both sides; filaments 

 short-connate below; ovary glabrous, short-stipitate; style dis- 

 tinct, the stigma short-linear, bifid. July. Alpine slopes; 



Honshu (high mountains of Kai and Shinano Prov.) ; rare. 



Var. eriocarpa Kimura. Ovary hairy. Occurs with the 

 typical phase. 



13. Salix yezoalpina Koidz. S. cyclophylla Seemen, non 

 Rydb. Maruba-yanagi. Low shrub with prostrate, root- 

 ing branches, the branchlets glabrous or sometimes slightly 

 pubescent while young, becoming purple-brown in age; leaves 

 with glabrous petioles 5-15 mm. long, the blades variously 

 elliptic or rounded, 2-4.5 cm. long, 1-3.5 cm. wide, essentially 

 entire, slightly silky while young, glaucous beneath, rounded, 

 barely mucronate or retuse, broadly cuneate to shallowly 

 cordate, the lateral nerves and reticulate veinlets slightly raised 

 beneath; staminate aments 15-30 mm. long, densely flowered, 

 the pistillate slightly elongate after anthesis, to 2-5 cm. long, 

 the bracts elliptic, nearly half as long as the capsule, rounded 

 at apex, densely long-hairy; capsules subsessile, glabrous; style 

 slender, the stigmas rather slender, bifid, the filaments gla- 

 brous. July. Alpine slopes; Hokkaido. 



Var. neoreticulata (Nakai) Kimura. S. neoreticulata Na- 

 kai Inu-maruba-yanagi. Distinguished from the typi- 

 cal phase by the leaves lustrous above and the prominently 

 raised reticulate veinlets beneath, and silky ovaries. Hok- 

 kaido (Mount Daisetu and Mount Rishiri). 



14. Salix bakko Kimura. S. caprea sensu auct. Japon., 



non L.- Bakko-yanagi. Tree with grayish brown 



branches pubescent at first, the sapwood with elevated, short, 

 longitudinal striations; leaves with petioles 1-2 cm. long, the 

 blades oblong or elliptic, 6-13 cm. long, 3-4 cm. wide, acumi- 

 nate to acute, undulate-serrate or nearly entire, acute to 

 rounded at base, vivid green and glabrous above, glaucous 

 and densely white crisped-pubescent; staminate aments 3-5 

 cm. long, rather broad, short-pedunculate, very densely 

 flowered, the bracts narrowly oblong to lanceolate, 3-4 mm. 

 long, subacute, densely long-hairy on both surfaces; stamens 2, 

 the filaments free, hairy below; pistillate aments to 10 cm. 

 long in fruit, 15-20 mm. across; ovary villous, long-stipitate; 

 style and stigmas very short, glabrous. Mountains; Hok- 

 kaido (western distr.), Honshu (Kinki Distr. and eastw.). 



SalLx leucopithecia Kimura. Furi-sode-yanagi. An al- 

 leged hybrid of S. baWo X S. gracilistyla; sometimes culti- 

 \'ated for ornament in early spring; only the staminate plant is 

 known. 



15. Salix hultenii Floderus var. angustifolia Kimura. 

 S. caprea sensu auct. Japon., pro parte, non L. — — Ezo-no- 

 bakko-yanagi, Ezo-no-yamaneko-yanagi. Small tree or large 



