156 Rhodora [SEPTEMBEK 
Fernald, no. 18,921 (TYPE in Gray Herb.), July 18, 1919, Fernald & 
Long, no. 18,922. 
A striking extreme of Gaultheria procumbens in its large rounded 
leaves. The form occupies an area of several square rods where it 
is uniform but at the upper margin of the area abruptly gives way to 
the ordinary form of the species with narrower more elliptic leaves 
narrowed to base and apex.—M. L. FERNALD, Gray Herbarium. 
MARSILEA QUADRIFOLA IN Marne.—In September 1919 I found a 
quantity of Marsilea quadrifolia on the surface of the little pond in 
our public park in Skowhegan. This pond has been artificially 
shaped and enlarged, but is kept filled by natural springs. It has 
been planted with water-lilies, but no new planting has been done 
for three years. As I am a constant visitor to the Park and to the 
shore of the pond, this unusual little plant could not have escaped 
me if any of it had been there the year before. Yet when first ob- 
served it had already covered so much of the pond as to raise the 
question whether it would not choke out our water-lilies if not sum- 
marily dealt with. "This spring, as the water is lowering, the Mar- 
silea has already appeared on the surface in company with the lily 
pads. 
Prof. M. L. Fernald informs me that he knows of only one previous 
record of Marsilea from Maine,—at Maranocook, where it was found 
in 1896'—LovisE H. Copurn, Skowhegan, Me. 
Lacruca HIRSUTA Muhl., forma calvifolia, n. f., foliis subtus 
glabris. 
Leaves glabrous beneath.—MarwE: slightly open places in dry 
sandy pine woods, frequent, Norway, August 1, 1919, Eames & 
Godfrey, no. 9657 (TYPE in Gray Herb.). Massacuuserts: Fal- 
mouth, July 13, 1911, Williams. Connecticut: Waterbury, Aug- 
ust 27, 1912, Blewitt, no. 1428; Canton, August 14, 1901, Driggs. 
Typical Lactuca hirsuta, as the name implies, has the midrib of 
the leaves (particularly the lower ones) hirsute beneath. "The plants 
here set off are strictly glabrous and the Eames & Godfrey plant 
has the leaves extremely thin and membranous.—M. L. FERNALD, 
Gray Herbarium. 
! H. Metcalf, Rnopona, iii. 237, (1901). 
Vol. 22, no. 259, including pages 129 to 144, was issued 23 Sep'ember, 1920. 
