1915] Hunnewell,— Botrychium lanceolatum 143 
variation is surely often worthy a name, especially when a series of 
collections indicate that it is not uncommon. Such seems to be 
the case with a white-flowered Spiraea tomentosa, which, although 
its existence was noted at least as long ago as 1862, as shown by a 
specimen in the Gray Herbarium, has more recently been brought to 
notice by some excellent specimens communicated by Miss E. F. 
Fletcher of Westford, Massachusetts. Besides several collections 
at hand that indicate its range, there is the following reference in a 
list of “Further Additions to the Flora of Middlesex County, Mass.,” 
published in Ruopora, i. 223 (1899) by Alfred W. Hosmer. “Spiraea 
tomentosa L. White-flowered form, found in Carlisle." 
Accordingly, I am proposing for this white-flowered form the name 
SPIRAEA TOMENTOSA L. f. albiflora, f. n., corolla alba.— Specimens 
examined. MassacHusETTS: Forge Village, Prescott Meadow, West- 
ford, July 19, 1914, Miss E. F. Fletcher (TYPE); Sherborn, Aug. 3, 
1909, Miss M. L. Loomis; Hawley, July, 1906, W. P. Brooks; Wil- 
liamstown, 1862, Prof. Chadbourne. New Hampsuire: dry hillside, 
Alstead, July 30, 1899, M. L. Fernald (162); Alstead, July 28, 1901, 
E. F. Williams; Lower Baker Pond, Wentworth, Aug. 1, 1908, E. F. 
Williams.— J. FRANCIS MACBRIDE, Gray Herbarium. 
BoTRYCHIUM LANCEOLATUM IN THE YELLOWSTONE.— Professor 
Fernald in his recent article in Ruopora on Botrychium angustiseg- 
mentum, when speaking of the occurrence of Botrychium lanceolatum 
in the West, gives the distribution of this latter species as extending 
from the Aleutian Islands to Mt. Ranier in Washington and the 
Selkirks in British Columbia. South and east of these mountain 
stations he says its occurrence is doubtful. In this connection I 
should like to note that I collected this plant on August 17, 1914, in 
the Yellowstone National Park, Wyoming, growing in the woods 
along the edge of the Yellowstone River near Yellowstone Lake.— 
F. W. HvNNEwELL, 2d, Wellesley. 
Toe FIELD MEETING or THE VERMONT BOTANICAL AND BIRD 
Crus will be held at St. Johnsbury, July 6-10, 1915, under the 
auspices of the Fairbanks Museum of Natural History. Excursions 
will be made to an extensive tamarack swamp, to some cool bogs and 
