"ses^ 



74 JOURNAL OF THE ARNOLD ARBORETUM [vol. n 



iana is the form with pruinose branchlets of which those of the year bear a 

 fine silky tomeutum. The statement of Andersson that the pedicel is six 

 times longer than the gland is not correct as it is only 2 to 21 times longer. 

 The stigmas are not sessile but they show a short style which often is bifid 

 at the top, but hardly longer than the two-cleft stigmas. The statement 

 *'foliis moUiter tomentosis" seems to indicate that Andersson probably 

 had before him other specimens of S. Behhiana than the male of which I 

 have seen a photograph. In 1867 he speaks of the male amcnts as 

 silia, ebracteata" while in 18G8 he says "vix bracteata." The type of S. 

 Geyeriana before me clearly shows a short but distinct peduncle with a few 

 small leaflets at least under the upper aments. The leaf represented in 

 fig, 50 on plate 5 of Andersson's monograph certainly belongs to S. Beb- 

 bianuy the drawing of the female flower, too, agrees much better with this 

 species. The statement of Geyer that the plant is "10-15 feet high" also 

 refers to S. Behhiana a species which as a whole is so easily distinguishable 

 from S. Geyeriana. 



There are two forms which can be separated from the type. One has 

 been described by Bebb as var. argeniea (of 5. macrocarpa) for the type of 

 which has to be taken a specimen of Lemmon's from Sierra County, Cali- 

 fornia, of which I have seen co-types in Herb. G. and M. In Bebb's Her- 

 barium is a male specimen collected by Lemmon at Sierra Valley without 

 date and number but I have found no real type. This var. argentea is 

 probably nothing but a very silky form of the type and its synonymy is as 

 follows : 



2b. S. Geyeriana var. argentea, comb. nov. — S, Geyeriana Bebb apud 

 Watson, Bot. Cal. ii. 87 (1879), non Andersson. — Rydberg, Fl. Colo. 95 

 (1906), ex parte. — S. macrocarpa^ var. argentea Bebb in Bot. Gaz. x. 223 

 (1885); apud Covillc in Contrib. U.S. Nat, Herb. iv. 199 (1893). — Ball 

 in Trans. Acad. Sci, St. Louis, ix. 80 (1899). — S. Icucosericca Bebb & 

 Nelson apud Nelson in Bull. W^om. Exp. Stat. No. 28, 179 (First Rep. FL 

 Wyom.) (189G), nom. nud.^ — A typo praecipue recedit pubescentia ramu- 

 lorum foliorumque novellorum densiore et omnino argentea vel tantum 

 pilis paucissimis ferrugineis intermixta. 



Of this variety I have seen specimens from the following states and 

 counties: southern Idaho (Owyhee, Bear Lake and Blaine Counties), east- 

 ern Oregon (Union, Crook and Harney Counties), Wyoming (Fremont, 

 Sweetwater, Albany, Sheridan and Bighorn Counties), Colorado (Laramie, 

 Lake and San Migual Counties), Nevada (Elko County), California (Plu- 

 mas, Sierra, Nevada, Placer, Eldorado, Mono, Tuolumne, Tulare, and 

 Fresno Counties), 



Another form of apparently greater taxonomic value is var. meleina 

 described by Henry (Fl. S. Brit. Col. 98 [1915]) as follows: "var. meleina: 



^ Nelson, 1. c, says: "In communicating this name to me Mr. Bebb made the following 

 imment : ' It will shortly appear as above in a government report. This is the Rocky Moun- 



com 



lain or Plateau member group which has far its eastern or Atlantic Coast represfcntatives, 

 S. sericea and S. peiiolaris, and for the Pacific Coast S. macrocarpa/" 



