CATALOGUE OF FOREST TREES. 169 



A form with narrower entire leaves, of the Sacramento valley and the California Coast ranges, is 



var. Hindsiana, Andersson in Ofv. af. Vet. Akad. Forh. 1858, 117 (Proc. Am. Acad. iv, 56). Bebb in Bot. California, ii, 85. 



S. Hindsiana, Bentham, PI. Hartweg. 335. Newberry iu Pacific R. R. Rep. vi, 89. Torrey in Pacific R. R. Rep. iv, 138. 

 Andersson in Kongl. Sven. Akad. Hand!, vi, 56, f. 37 ; De Candolle, Prodr. xvi 2 , 215. Walpers, Ann. v, 746. 



S. Hindsiana, var. tenitifolia, Auderssou iu Kongl. Sven. Akad. Handl. vi, 56; De Candolle, Prodr. xvi 3 , 215. 



Wood light, soft, close-grained, compact; medullary rays thin; color, light red, the sap-wood nearly white; 

 specific gravity, 0.4397 ; ash, 0.50. 



312. Salix discolor, Muhlcnberg, 



Neue Schriften Gesell. Nat. Fr. Berlin, iv, 234, t. 5, f. 1 (Ann. Bot. ii, 62, t. 5, f. 1). Willdenow, Spec, iv, 665. Persoon, Syn. ii, 599. 

 Pursh.Fl. Am. Sept. ii,613. Poiret, Suppl. v, i>6. Nuttall. Genera, ii, 231. Elliott, Sk. ii, 669. Torrey, Compend. Fl. N. States, 

 369; Fl. N. York, ii,206. Sprcugel, Syst. i, 104. Forbes, Sal. Woburn. 279. Eaton, Manual, 6 ed. 319. Smith in Rees' Cycl. No. 

 25. Darlington, Fl. Cestrica, 3 ed. 257. Eaton & Wright, Bot. 408. London, Arboretum, iii, 1530, f. 1317, 1630, f. 147. Bigelow, Fl. 

 Boston. 3 ed. 392. Hooker, Fl. Bor.-Am. ii, 147.--Barratt, Sal. Am. No. 3. Emerson, Trees Massachusetts, 258 ; 2 ed. i, 296 & t. 

 Dietrich, Syu. v, 419. Richardson, Arctic Exped. 312. Darby, Bot. S. States, 506. Andersson in Ofv. af. Vet. Akad. Forh. 

 1858, 114 (Proc. Am. Acad. iv, 63) ; Kongl. Sven. Akad. Handl. vi, 83, f. 49 ; De Candolle, Prodr. xvi s , 225. Walpers, Ann. v, 750. 

 Chapman, Fl. S. States, 430. Gray, Manual N. States, 5 ed. 462. Koch, Dendrologie, ii, 570. Macoun in Geological Rep. Canada,. 

 1874-75, 210. Ridgway in Proc. U. S. Nat. Mus. 1882, 86. 



8. Sensitiva, Barratt, Sal. Am. No. 8. 



GLAUCOUS WILLOW. 



Labrador, west to the valleys of the Peace and Athabasca rivers, southward through the Atlantic region to 

 Delaware and southern Missouri. 



A small tree, rarely exceeding 6 meters in height, with a trunk sometimes 0.30 meter in diameter, or more often 

 a tall, straggling shrub 3 to 6 meters in height; along streams and borders of swamps in low, wet soil; varying 

 greatly in the form of leaves, aments, and nature of pubescence. 



The best marked forms are 



var. eriocephala, Andersson in Kongl. Sven. Akad. Handl. vi, 85; De CaDdolle, Prodr, xvi 2 , 225. Gray, Manual N. States, 



5 ed. 463. 



S. eriocephala, Michaux, Fl. Bor.-Am. ii, 225. Lamarck, Diet, vi, 661. Bigelo-w, Fl. Boston. 3 ed. 391. Eaton, Manual, 



6 ed. 321. Eaton & Wright, Bot. 409. Emerson, Trees Massachusetts, 1 ed. 259 ; 2 ed. i, 196 & t. Carey in Gray's 

 Manual N. States, 1 ed. 426. Andersson in Ofv. af. Vet. Akad. Forh. 1858, 117 (Proc. Am. Acad. iv, 57). Walpers, 

 Ann. v, 746. 



8. crassa, Barratt, Sal. Am. No. 7. 



var. prinoides, Anderssou in Kongl. Sven. Akad. Handl. vi, 86 ; De Candolle, Prodr. xvi 2 , 225. Emerson,Tree8 Massachu- 

 setts, 2ed. i,297. 



8. prinoides, Pursh, Fl. Am. Sept. ii, 613. Ntittall, Genera, ii, 231. Sprengel, Syst. i, 102. Poiret, Suppl. iv, 67. Torrey, 

 Compend. Fl. N. States, 36(i. Smith in Rees' Cycl. No. 26. Forbes, Sal.Wobum. 79, t. 40. Eaton, Manual, 6 ed. 319. 

 Beck, Bot. 319. Eaton & Wright, Bot. 407. W. Koch, Comment. 46. London, Arboretum, iii, 1530, f. 1317, 1612, f. 

 40. Hooker, Fl. Bor.-Am. ii, 150. Emerson, Trees Massachusetts, 1, ed. 259. Dietrich, Syn. v, 419. 



Wood light, soft, close-grained, compact, containing many evenly-distributed, small, open ducts ; medullary 

 rays and layers of annual growth not obscure ; color, brown streaked with orange, the sap-wood light brown ; 

 specific gravity. 0.4261 ; ash, 0.43. 



313. Salix flavescens, Nuttall, 

 Sylva, i, 65; 2 ed. i, 81. Bebb in Bot. California, ii, 86, in part. 



Rocky mountains of Idaho and Montana southward to the Mogollou range, New Mexico (U. L. Greene) ; on the 

 Cascade mountains, Oregon, and the Sierra Nevada, California. 



A small tree, sometimes 6 to 9 meters in height, with a trunk rarely 0.30 meter in diameter; borders of streams, 

 reaching its greatest development in the southern Rocky Mountain region. 



Wood light, soft, not strong, close-grained, compact ; medullary rays numerous, obscure ; color, brown tinged 

 with red, the sap-wood nearly white ; specific gravity, 0.4969 ; ash, 0.61. 



