2 JOURNAL OF THE ARNOLD ARBORETUM [vol. i! 



I^can or Asiatic species as one might judge by the conclusions of Andcrsson 

 and more recent authors. 



As may lie seen by tlic synonymy given below Uarratt referred S. discolor 

 and ^, Sanilcricuia to different grouj)s but he, apj)arently, was not well ac- 

 quainted with S, Scoiileriaua. On the other hand, he did, in 1810, recognize 

 S. discolor as the type of a distinet section, of which the synonymy is as 

 follows: 



Sect. Discolores Rarratt apud Hooker, Fl. Bor.-Am. ii. 1 17 (1830), [Discol- 

 orac], pro i)artc, excl. S. Richardsorn'i; Sal. Am. sect. ii. (1840). — Scct.(V/- 

 preae Koch, Do Sahc. Eur. Comm. 81 (1828), quoad S. prinoidcs in nota. — 



Ball a})ud Coulter & Nelson, N. Man. Rocky Mts. Bot. 137 (1909).— 



Sect. Cincrcae Barratt apud Hooker, FL Bor.-Am. ii. 144 (1838), pro parte 

 quoad .S. Scaidcriana, non Fries 1828. — Sect. Cinerasccntes Andersson in 

 Ofv. Svensk. Vet.-Vkad. Forh. xv, 120 (18;58), pro parte. - Sect. Ciner- 

 asccntes vcl Capreae Andersson in Svensk. Vet.-Akad. Ilandl. vi. 82 

 (Monog. Salic.) (1867); apud De Candolle, Prodr. XVL^ 215 (1868), pro 

 inirlc, quoad S. hrachystachys et S. discolor, — Sect. Phijlicifoliac Schneider, 

 III. Ilandb. Laubh. i. 54 (1904), i)ro parte, quoad S, discoh)r. 



To the same group seem to belong the Mexican species 8, paradoxa, S. 

 oxylcpis and S. Roivlcei, Not having seen enough material of those and not 

 yet having been able to reach a final conclusion regarding the differences be- 

 tween certain forms of *S. Scoulcriana and S, discolor I do not give now a key 

 for tliis grou]). The differences of tlicse two species as pointed out by such 

 an eminent salicologist as Ball (1909) do not always prove right. As a 

 whole it is nmch easier to distinguish l>oth in the herbaria by their aj)i)ear- 

 anee than to describe the characters by which they may be separated. 



1. S. discolor Muhlenberg in Neue Schrift. Ges. Nat. Fr. Berlin, iv. 234, 

 t. VI, fig. 1 (1803). — Willdenow, Spec. PI. iv. QG5 (1805). — Pursh. Fl. Am. 

 Se[)t. II. G13 (1804). — Poirct in Lamarck, Enc. Suppl. vi. 57 (1817). — El- 

 liott, Sketch Bot. II. G69 (1824). — Bigelow, Fl. Bost. ed, 2, 301 (1824). 

 Forbes, Salic. Wob. 279, fig. 147 (1892). — Hooker, Fl. Bor.-Am. ii. 147 

 (1839), excl. var. i3 — Bebb apud Coulter & Watson, Gray's Man. cd. 6, 

 482 (1890). — Sargent, Silva, ix. 133, t. 478 (1896). — Schneider, III. Ilandb. 

 Laul»h. I. 54, fig. 11 u-uS 26 a (1904). — Britton & Brown, 111. Fl. i. 499, 

 fig. 1187 (1896); ed. 2, i. 599, fig. 1472 (1913). — Robinson & Fernald, 

 Gray's Man. 325, fig. 658 (1908). — Ball apud Coulter & Nelson, N. Man. 

 Rocky Mts. Bot. 137 (1909); in Elys. Mar. iii. 32, f. 7, fig. a (1910).— 

 S. conifera "Wangenheim, Beytr. Forstw. Nordam. Ilolzart. 123, t. 31, fig. 

 72 (1787),exparte. — AYilldcnow,Berl. Baumz.347(1790);ed.2, 455 (1811), 

 ex i)arte; Sp. PI. iv. 705 (1805), ex parte. — Pursh, Fl. Am. Sept. 612 (1814), 

 ex parte; — ? S. sensiiiva Barratt, Sal. Am. no. 8 (1840). — S, prinoidcs 

 Forbes, Salict. Wob. 79, t. 40 (1829). — S. {phyliciJoUa'') discolor Andersson 

 In Ofv. Svensk. Vet.-Akad. Forli. xv. 123 (1858), pro jxartc. — S, discolor 

 rircscens Andersson in Svensk. Vet.-Akad. Handl. vi. 85 (1867). — S. hal- 

 saniifcra itdcrmcdia Barratt nom. nud. in herb. sec. Bebb in Bot. Gaz, iv. 



