1920] Fernald,—American Varieties of Pyrola chlorantha 51 
a hybrid with that polymorphous species. The writer attempts no 
solution of their status. 
The American varieties of Pyrola chlorantha may be distinguished 
by the following key: 
Calyx 3-4 (rarely 5) mm. broad: petals 4-6.5 mm. long, 2.5-4 mm. broad: 
anthers 1.6-3 (rarely 3.3) mm. long: mature style 5-7 mm. long. 
Leaves rounded to base and apex, rather numerous (4-11) in a rosette: 
calyx-lobes deltoid-ovate to ovate-oblong, usually longer than or as 
long as broad, 0.8-1.7 mm. long: anthers 2.3-3.3 mm. long. 
Leaf-blades mostly orbicular, suborbicular, reniform or ovate; the larger 
LAS us bread.............- acne 20933 P. chlorantha (typical). 
Leaf-blades mostly elliptic or oblong-ovate; the larger 0.9-1.7 em. broad. 
var. saximontana. 
Leaves mostly cuneate at base and truncate or subtruncate at summit, 
somewhat flabelliform-obovate, few (1-7 or even wanting) in a rosette; 
the larger 0.7-2.5 em. broad and long: calyx-lobes broadly deltoid, 
mostly broader than long, 0.5-1 mm. long: anthers 1.6-2.6 mm. long. 
var. paucifolia. 
Calyx 4.8-6 mm. broad; its lobes 1.2-2 mm. long: petals 6.5-9 mm. long, 
3.5-6 mm. broad: anthers 3-4 mm. long: mature style 8-10 mm. long: 
leaf-blades rounded at base; the larger ones 2-4.5 em. broad. 
var. convoluta. 
P. CLORANTHA Sw. Sv. Vet.-Akad. Nya Handl. xxxi. 190 (1810).— 
Dry or dryish woods, southeastern and central Newfoundland and 
" Labrador" to Mackenzie, south to Nova Scotia, and locally to s. 
Maine, e. Cape Cod and w. Massachusetts, (?) Hartford Co., Con- 
necticut, w. Ontario, Wisconsin, Black Hills, South Dakota, and 
among the mts. to Arizona and Oregon. Europe and northern 
Asia. 
Var. saximontana, n. var., foliis plerumque ellipticis vel oblong- 
ovatis, majoribus 0.9-1.7 cm. latis.—Montana to New Mexico. 
Montana: descent to Ross’ Hole, 1880, S. Watson, no. 260; Yellow 
Bay, Flathead L., 1908, Mrs. J. Clemens (TYPE in Gray Herb.). 
Wyomine: Cache Creek, Yellowstone Park, 1885, Tweedy, no. 918; 
Leigh’s Lake, 1901, Merrill & Wilcox, no. 1120. CoLtorapo: Minne- 
haha, alt. 2600 m., 1901, Clements, no. 238. New Mexico: Winsor 
Creek, Pecos Nat. Forest, 1908, Standley, no. 4227, in part. 
Var. paucifolia, n. var., foliis nullis vel paucis (1-7) plerumque 
flabellato-obovatis truncatis vel subtruncatis basi cuneatis, rare 
ovatis vel subreniformibus, majoribus 0.7-2.5 cm. longis latisque; 
calycibus 3-4 mm. latis, lobis late deltoideis 0.5-1 mm. longis; petalis 
. 4-6 mm. longis, 2.5-3.5 mm. latis; antheris 1.6-2.6 mm. longis; stylo 
maturo 5-7 mm. longo.—Cape Breton to w. Ontario, s. to n. and w. 
New England, n. New York and locally to mts. of Pennsylvania. 
Prince Epwarp IsraNp: Alberton, 1912, Fernald & St. John, no. 
7886. New Brunswick: gorge of Aroostook R., 1902, Williams, 
Collins & Fernald. Nova Scotia: Smoky Mt., Cape Breton, 1914, 
Nichols, no. 868; Lake Warren, Ingonish, Cape Breton, 1904, Churchill; 
Truemanville, 1884, Trueman; Pictou, 1907, C. B. Robinson, no. 592. 
