£0 JOURNAL OF THE ARNOLD ARBORETUM [vol. ii 



4. S. humilis Marshall, Arl>ust. Am. 140 (1785); Cat. Arb. Arbriss. 2^23 

 (1788). — Carey apud Gray, Man. 425 (1848), — Andcrssoii in Ofv. 

 Svensk. Vet.-Akad. Forli. xv. 126 (1858); in Svcnsk. Vet.-Akad. llanJl. vi. 

 110 t. VI. fig. 02 (Monog. Salic.) (1867), excb var. pro parte et sub-spec. 

 Ilarhvcgii; in De Candolle, Prodr. xvi.^ 235 (1868), excl. form, pro i)arte et 

 var. Ilartwcgii, — Bebb apud ^Yatson & ConUer, Gray's Man. ed. 6, 483 

 (ISSO). — Ball in Troc. Iowa Acad. Rei. vn. 148, I. 11, fig. 7 (1000); in Elys. 

 Marian, in. 35, t, 7, fig. c (1910), — Britten & Brown, 111. Fl. i. 408, fig. 

 1185 (18<:6);efl. 2, i. COO, fig, 1473 (1913). — Britton, Man. 317 (1901).— 

 Robiiuson & Fernald, Gray's Man. ed. 7, 326, fig. 600 (1908), oxcl. var. — 

 S. conijcra Wangenlieim, Beylr. Forstw. Nordam. Ilolzart. 123, t. 31, fig. 

 72 (1787), pro parte; Willdenow% Si)cc. PI. iv. 705 (1805) pro parte; Berlin, 

 Baumzuchl, ed. 2, 455 (1811) pro parte. — Mulilenberg in Xeue Sclir. Ges. 

 Nat. Freunde Berlin, iv. 240 (1803). — Elliott, Sketch Bot. ii. GO!) (1824). 

 Pursh, Fl. Am. Sept. ii. 612 (1814), pro parte. — ? Sa/lt spec. Schoei)f, 

 Mat. Med. Am. 147 (1787). -- ? S. flora Gmelin, Syst. Nat. (Limi. ed. 13) 

 II. 74 (1791). — S. oecidentaUs Walter, FL Carol. 243 (178S). — .*?. irisiis 

 Muhlenberg in Neue Sclir. 1. c, 241 (1803), pro j)arte et quoad t. vi. fig. 9, 

 ncn Aiton. ■ — S. Miihlenhcrgiana Willdenow% Sp. PI. iv. 093 (1805), pro parte 

 minima. — S. Miihlenhcrgiana Pursh, Fl. Am. S<^])t. II. 609 (1814), excl. 

 synon. ex parte. — Elliott, Sketch Bot. ii. 667 (1824) excl. syn. Walter. 

 Forbes, Salict. Wob. 278 (1829), an excl. fig, 145?. — Torrey, Fl. N.Y. ii. 

 205 (1843).- Barratt, Sal. Am. no. 1 (1840), prob. excl. var. pro parte, 

 S. Jivviilis longifolia Andcrsson in Svensk. Vet.-Akad. Ilandl. vi. Ill 

 (1867), excl. fcrmis pro parte; in De Candolle, Prodr. xvi.^ 236 (1868), excl. 

 formis pro parte. — >S. humilis angnstifolia Andcrsson in Svensk. 1. c. (1867) 

 excl. forniis; in De Candolle, 1. c. (1868), excl. formis, — ? S. tridis glabrata 

 Andcrsson i!i Svensk. 1. c. 113 (1868); in De Candolle, 1. c. 237 (1868). 



This sj.ccies was described by Marshall as follows: "This seldom rises 

 above three c;r four feet, witli greenish, somewhat downy stalks. The leaves 

 are larger than the other kinds [nigra, sericea] entire, oblong, somewhat oval, 

 and g]ai:ccus or whitish underneath. There are some varieties of larger 



growth, belonging either to this or the last mentioned kind" Iscricea]. 

 There is no doubt that this description can oidy be applied to what we now^ 

 call S. humilii^'. Two years later Wangenheim published his S. conifcra 

 restricted to »S. discolor by Willdenow in 1796. Wangenhcim's figure, as I 

 explained already under S. discolor, is very inaccurately dra■\^Tl, and his diag- 

 nosis partly fits iS. discolor (12 to 15 feet high), partly *S. humilis (foliis ovato- 

 lanceolatis acutis , . , subtus tomentosis), as also does his remark '' sic haben 

 kurze Blattsliele.** lie speaks of 2 to 7 stamens which must be an erroneous 

 statement. So far as I can judge by his description he had before him either 



'/' 



Without having seen a 



type (for instance the s])ecimen from w^hich the figure was drawn) I cannot 

 decide \\hat Wangenheim really had in mind. I believe, however, he mixed 

 the two forms just mentioned. Willdenow*s description of 1790 in my 

 opinion, ai)i)lies to S. discolor. Later, in 1805 and 1811, Willdenow added 



