1918] Fernald,— Rosa blanda and its Allies 95 
flowers solitary or corymbed: pedicels 1-3 cm. long, glabrous: hypan- 
thium glabrous, subglobose, not attenuate above, rounded at base, 
in anthesis 5-9 mm. in diameter: fruit oblate-globose, orange-red, 
1-1.5 cm. in diameter: sepals more or less glandular, lance-ovate, 
caudate-appendiculate, after anthesis divergent or reflexed, persistent; 
the blades 0.9-1.4 em. long; the appendage 1.2-4 cm. long; petals 
rose-purple, 2.5-3.5 cm. long: styles distinct, persistent, not exserted: 
achenes borne at the base and on the walls of the hypanthium.— 
Valley of the St. John River and tributaries, New Brunswick and 
Maine. New Brunswick: river-gravels and shingly border of 
thicket by the St. John River, Woodstock, July 14, 1916, Fernald & 
Long, no. 13,925. Maine: wet gravelly banks of the St. John be- 
tween the Great Black and Little Black Rivers, July 27, 1917, Harold 
St. John; St. Francis, 1881, Kate Furbish; gravelly shores, Fort Kent, 
1881, Kate Furbish, September 21, 1899, Fernald; Winding Ledges, 
Fort Kent, July 23, 1900, E. F. Williams; gravelly shore of the St. 
John, Van Buren, September 11, 1899, Fernald (ryPE in Gray Herb.); 
gravel-beach of Aroostook River, Fort Fairfield, August 10, 1909, 
Fernald, no. 1949. 
Forma albina, n. f., petalis albis.— With the typical form, Wood- 
stock, New Brunswick, July 14, 1916, Fernald & Long, no. 13,926 
(TYPE in Gray Herb.). 
Distinguished from R. blanda, with which it hybridizes, by its 
glabrous darker-green leaves and the widely divergent or reflexed 
mature sepals; from R. virginiana by the lack of infrastipular prickles, 
the glabrous pedicels and hypanthiums, and parietal as well as basal 
achenes. 
The other rose is a more northern shrub of calcareous ledges and 
thus far known only from Bic in Rimouski Co., Quebec. It is a 
great pleasure to associate with this species the name of one of the 
writer’s companions in collecting the type-material and for years his 
companion on many memorable botanical explorations of northern 
Maine and eastern Quebec, Emile Francis Williams. This species is, 
therefore, called 
Rosa Williamsii, n. sp., caulibus 3-5 dm. altis, adultis inermibus 
vel sparse setosis purpurascentibus; ramulis inermibus glabris; 
stipulis dilatatis adnatis 1-2 cm. longis subtus glanduloso-pulveru- 
lentis valde glanduloso-ciliatis, laminis liberis semiovatis; petiolis 
rhachibusque glanduloso-pulverulentis -setulosisque; foliolis 5-7 ple- 
rumque 7 cuneato-obovatis apice plerumque rotundatis vel subtrun- 
catis supra mediam argute simpliciter vel dupliciter serratis utrinque 
breviter pilosis subtus in nervis glandulosis 1-3.5 cm. longis; floribus 
solitariis vel binis; pedicellis 1-1.5 cm. longis glabris; hypanthio 
glabro ovoideo in anthesin 3.5-4.5 mm. diametro; fructibus pyri- 
