F. TRACY HUBBARD 
For a. further discussion of this variety cf. Fernald and Wiegand, in 
Rhodora 12: 133 (1910). 
Range. — Occurring in northeastern and central Canada, in the 
United States in New England and Illinois. Frequent in Europe and 
also found in Russia and in Arabia. Specimens from Alabama, New 
Mexico, Arizona, Mexico, one from Hungary and several from India 
seem intermediate between the variety and the species. 
Other minor variations of S. viridis or perhaps better termed 
abnormalities are: 
A forked form of which I have seen specimens from Missouri, from 
northern India and from Japan. 
A viviparous form to which several names have been given. Pani- 
cum viride var. viviparum Bertol. Fl. Ital. i: 421 (1833) nomen: Doell, 
Rhein. Fl. 128 (1843): Lehm. in Arch. Naturk. Livl., ser. 2, 11: 138 
[Fl. Poln.-Livl. 138] (1895). Setaria viridis var. vivipara (Bertol.) 
Pari. Fl. Ital. i: 112 (1848) [as "b. viviparum'']: Lucas, in Corre- 
spondenzbl. Naturf. Ver. Riga, 12: 185 [Repr. 27] (1862). S. arvensis 
suhsp. viridis var. vivipara Bruhin, in Bericht. Naturw. Ges. St. Gallen, 
1865-66: 215, 216 (1866) nomen. Panicum viride monstr. vivipara 
(Bruhin) Dalla Torre & Saruth. Fl. Tirol. 6^: 157 (1906). 
The only specimen I have seen is one from Dover, Maine, collected 
by Fernald in 1896 and this has only one viviparous panicle, the others 
being normal. 
A few specimens show characters or combinations of characters 
intermediate between S. viridis and S. italica which point to hybridity: 
the specimens that I have seen showing this most clearly are: Roches- 
ter, New York; Baxter, no. 5 — Garret County, Maryland; Donnell 
Smith in 1879 and Moscow, Idaho; Henderson, no. 2849 all of which 
are in the U. S. Nat. Herb. 
The following combinations have been commonly referred as 
synonyms to S. viridis, but I believe that they are better referable to 
other species. 
Panicum cynosuroides Scop. Fl. Carn., ed. 2, i : 50 {1772) [com- 
monly referred to S. viridis, hut I believe more correctly a synonym of 
S. glauca: cf. Roth, Tent. Fl. Germ. 2: 70 (1789) sub P. glaucum]. 
P. geniculatum Lam. Encycl. 4: 727 [err. typ. 737] (1798) : Hornem. 
Cat. Hort. Hafn. 28 (1807 ?) : Willd. Enum. Hort. Berol. 1031 (1809): 
Hornem. Hort. Hafn. 81 (1813): Doell, in Mart. Fl. Bras. 2^: 158 
(1877) [probably equals S. glauca of which Lamarck says in the original 
description it is perhaps only a variety]. 
