24 JOUHNAL of the ARNOLD arboretum [vol. II 



Claire, Richland, Clinton, Cook and Mason Counties), Indiana (Clay, St. 

 Joseph, Lagrange, Allen, Winnebago, Steuben and Craw-ford Counties), 

 Ontario (Essex District). 



5. S. tristis Aiton, Ilort. Kew. in. 393 (1789). — Muhlenberg In Neue 

 Sclir. Ges. Nat. Fr. Berlin, iv. 241 (1803) excL t. vi. fig. 9. — ^Yilldeno^v, 

 Spec. PL IV. G03 (1805). — Duniont de Courset, Bot. Cult. ed. 2, vi. 390 

 (1811). — Pursh, Fl. Am. Sept. ii. G09 (18U). — Elliott, Sketch Bot. ii. 

 6G8 (18^4). — Forbes, Salict.Wob. 279 (1829), prob. excl. fig. 1.50.— Bar- 

 ratt, Sal. Am. no. 2 (1840). — Torrey, Fl. N.Y. 205, t. 118 (1S13). — Carey 

 apud Gray, Man. 425 (1847). — Andersson in Ofv. Svensk. Vet.-Akad. 

 F( rh. XV. 12G (1858); in Svensk. Vet.-Akad. Ilandl. vi. 112, t. vi. fig. 03 



(Monog. Salic.) (18G7), excl. var.; in De Candolle, Prodr. x\ i.^ 230 (1808), 

 excL var. — Macoun, Cat. Can. PL in. 455 (1880). — Ball inProc. TowaAcad. 



Sci. VII. 149 (1900); in Elys. Marian, iii. 35, t. 9, fig. a (1910). — Britton & 

 ProAvn, 111. Fl. 1. 499, fig. 1186 (1896); ed. 2, i. COO, fig. 117t (1913). 

 Schneider, 111. Ilandb. Laubh. i. 64, fig. 11 x-y, 12 u (1904). — Rol>inson & 

 Fernald, Gray\s Man. ed. 7, 326, fig. 601 (1908). — S. alpina Walter, Fl. 

 Carol. 243 (1788), nonScopoli (1772) .— Blake in Rhodora,xjn. 130 0915). 

 S. loJigirostrisMichiiux, Fl. Bor.-Am. ii. 226 (1803). — Bigelow, Fl. Bost. 

 ed. 3, 391 (1840). — S. Milhlenhergiana Willdenow, Spec. PI. IV..092 (1805), 

 pro parte et excl. syn. S. incana Michaux. — S, MUhlenhcryiana Pur^h, Fl. 

 Am. Sci>t. II. 609 (1814), pro parte. — Elliott, Sketch Bot. ii. 00? (1824), 

 pro i)arte. — S. conifera Willdenow, Spec. PI. iv. 705 (1805) et Berlin. 

 l?auinzucht, ed. 2, 455 (1811) pro parte, , quoad syn. S. longirostris, non 

 Wangcnhelni. — Pursh, Fl. Am. Se{>t. ii. 009 (1811), pro parte, quoad syn. 

 S. l()ngirof>ins, — Elliott, Sketcli Bot. ii. GG9 (1824), pro parte, quoad syn. 

 iS, lojigirostns. — S, tridris var. /3 monadclpliia Barratt, Sal. Am. no. 2 

 (1840). — S. irhiis microphylla Andersson in Ofv. Svensk. Vet.-Akad. 

 Frosh. XV. 126 (1858). — ? S, iridis lougiflora Andersson in Svensk. Vet.- 

 Akad. Hand!, vi. 113 (1867). — S. humilis var. tridis Griggs in Proc. Ohio 

 Acad. Sci., IV. 301, t. x, partini (1905). 



Walter (1788) was the first to describe this species as S. alpina but this 

 name had been used before by Scopoli for a European Willow.^ Aiton's 

 original diagnosis is: " S. exstipulacea, foliis lineari-lanceolalis peliolatis 

 rugosis siibtus tomentosis. Nat. of Pennsylvania. Mr. Wilhani Yoimg. 

 Introd. 17 65," The type therefore of tristis came from Pennsylvania. 

 Muhlenbi^rg (1803) gave a rather good description of it but Llu^ leaf which 

 lie figured looks more like one of S. hinnilis than of S. iridic. As I have 

 alreacy exi)lained he probably had S. humilis partly in mind, and I have also 

 referred under S. humilis to Willdenow's treatment of 5. tridi.s\ Michaux's 

 S. lougirostris is probably S. tristis because he says "foliis subsessilibus 

 longiuscule laneeolatis *' Forbes (1829) describes the true S. tristis but the 



^ Soo[)oirs S. alpina is a rather uncorfain form. It lias heen referred with a query to S. 

 arh}(\-cula Linnaeus by A. & E. G. CaiBUS, Class. Saules d'Europe, i. 1^24 (190t), wliile v. Seenieii 

 in Ascherson & Graohener, Syn. Mitteleur. Fl. iv. 164 (I90S) i)artly refers it to S. juyrsinifcs 

 var. Jacquiniana Koch. 



