154 Rhodora [AUGUST 
GAYLUSSACIA. 
G. baccata (Wang.) K. Koch. Dry fields and open woods, common 
throughout. 
G. baccata (Wang.) K. Koch, forma glaucocarpa (Robinson) 
Mackenzie. Borders of woods, Andover (A. S. Pease, July 27, 1903); 
Sherborn (M. L. Loomis, July 25, 1911); Norfolk (R. A. Ware, Aug. 
8, 1911); Blue Hill, Norfolk Co. (N. T. Kidder, Aug. 11, 1919). 
G.dumosa (Andr.) T. & G., var. Bigeloviana Fernald. See RHODORA 
xiii. 99, 1911. Peat-bogs, occasional west and north of Boston; only 
stations south being at Billings Pond, Sharon, and at Canton. 
G. frondosa (L.) T. &.G. "Thickets and open woods; generally 
distributed, but not usually very abundant. 
KALMIA. 
K. angustifolia L. Pastures, roadsides and open woods, common 
throughout. Collected at Cambridgeport by George B. Emerson, 
June 30, 1838. 
K. angustifolia L., forma candida Fernald. See RHODORA xv. 
151-152, 1913. Sherborn (M. L. Loomis, June 15, 1913). Specimen 
in herb. Boston Soc. Nat. Hist. 
K. latifolia L. Moist woods and swamps, frequent. Not abundant, 
but usually preserved by its isolation. 
K. polifolia Wang. Peat-bogs, 11 stations in Essex and" Middlesex 
Counties. l 
LEDUM. 
L. groenlandicum Oeder. Dry pine woods near Arsenal, Water- 
town (Wm. Oakes, no date); Bedford (L. L. Dame, no aate); Concord 
(E. S. Hoar, June 7, 1858; Horace Mann, 1862; J. R. Churchill, May 
20, 1880; Mrs. Alice Hickes, June 5, 1888, and others); Littleton (W. 
H. Manning, Aug. 13, 1882); Natick, according to Dame & Collins, 
Fl. Middlesex Co., 63, 1888. 
LEUCOTHOK. 
L. racemosa (L.) Gray. Swamps and wet thickets; rare in northern 
portion; well distributed and fairly abundant from Middlesex Fells 
south and southwest. This shrub and Clethra are the favorite hosts 
for Cuscuta compacta Juss. 
LYONIA. 
L. ligustrina (L.) DC. Moist soil, common throughout. Forms 
with leafy inflorescence do not seem to be the southern var. foliosiflora 
(Michx.) Fernald. 
