26 Rhodora (FEBRUARY 
CONVOLVULACEAE. 
CONVOLVULUS. 
C. ARVENSIS L. Waste places and grassland, occasional. 
C. sepium L. Meadows and moist thickets, common. 
C. sepium L., var. pubescens (Gray) Fernald. Seashore dunes 
and thickets, common. 
CUSCUTA. 
C. Cephalanthi Engelm. On Decodon and Impatiens, Furnace 
Pond, Pembroke (C. H. Knowlton & J. R. Churchill, Sept. 6, 1920). 
C. compacta Juss. In wet places, parasitic on various shrubs; 
Tewksbury, Hudson, Waltham, Wellesley, Natick, Needham and 
southward. 
C. Errinum Weihe. From a flaxfield, Topsfield (Herb. J. A. 
Lowell, no date). Specimen in herb. Bos. Soc. Nat. Hist. 
C. Gronovii Willd. Wet soil, parasitic on coarse herbs, sometimes : 
on shrubs; common throughout. 
C. pentagona Engelm. (C. arvensis Beyrich of Gray's Manual, 
7th ed. See Am. Journ. Sci. xliii. 340, t. 6, figs. 22-4, 1842.) Abun- 
dant on herbs, sandy shores of Winter Pond, Winchester and Massa- 
poag Pond, Sharon; also (waif?) Hillside Ave., Cambridge; rocky 
woods, climbing Helianthus divaricatus, Blue Hill, Canton (N. T. 
Kidder, Aug. 11, 1919). 
[C. trifolia Babgt. Reported from Winchester on red clover, by 
A. V. Osmun in RHODORA, v. 291, 1904. Specimen not available for 
examination.] 
IPOMOEA. 
I. coccinea L. By railway, Newton (F. W. Grigg, Sept. 5, 1896). 
I. cocciNEA L., var. HEDERIFOLIA (L.) Gray. Spontaneous on 
dumps along Charles River near Mt. Auburn (B. L. Robinson, Aug. 22, 
1897; W. P. Rich, Aug. 28, 1897). 
I. HEDERACEA Jacq. Little Canada dump, Lowell (C. W. Swan, 
Sept. 16, 1884); one plant, spontaneous in yard, Newton (F. W. 
Grigg, Oct. 5, 1911); also in Boston, according to W. P. Rich in 
Ruopora, x. 153, 1908. 
I. Lacunosa L. Little Canada dump, Lowell (C. W. Swan, 
Sept. 11, 1884). Specimen in herb. N. E. Botanical Club. 
I. PURPUREA (L.) Roth. Gardens and waste places, occasional. 
