14 Rhodora [JANUARY 
been plowed for nearly half a mile to destroy this plant and the few 
others which grew with it. 
Chiogenes serpyllifolia, Salisb. A small station in the Hanson 
cedar swamp. | (C. H. Knowlton and R. A. Ware). 
Leucothoe racemosa, Gray. I have found one bush by the Charles 
River in Natick. It is abundant in wet woods at Halifax. 
Hottonia inflata, EM. The latter part of June Mr. J. W. Hunting- 
ton of Amesbury showed me the station for this plant which he re- 
ported in Rnopona, iii. 216. July 7 I found a few plants in a small 
brook in Waltham, and the next day I came across large quantities 
in the ditch beside the Willow Road, Belmont. 
Lysimachia producta, Fernald. There is a fine colony of this on 
the sandy shore of Silver Lake, Halifax. 
Sabbatia chloroides, L. Large quantities of this in Halifax bring 
the plant a little nearer to Boston than previous reports. 
Asclepias obtusifolia, Mx. This plant, reported “not common" 
in the Middlesex Flora, is frequent in the towns of Chelmsford, West- 
ford, Dunstable, Groton and Tyngsboro, where the light glacial 
gravel favors it. 
Echinospermum Lappula, L. Abundant in roadside thicket, 
Groton; roadside, Winchester. 
Linaria genistaefolia, Mill. I found a single plant of this rare waif, 
in good fruit and flower, on a railroad embankment in Groton. I do 
not know of any other station in New England. 
Scrophularia leporella, Bicknell. I discovered a large clump of 
this well fruited, growing alone in a dry pasture at East Lexington, 
August 4. 
Scrophularia Marilandica, L. ‘There is a fine station for this on 
Concord Hill, Lexington, from which I collected good fruiting speci- 
mens Oct. 13. It was found here as early as 1903 by Miss E. L. 
Shaw. This place and Oak Island are the only stations known for it 
in the Boston region. 
Galium boreale, L. I found some fine plants of this by a ditch in a 
mowing field, near Central Square, Woburn. It grew with all the 
assurance of a native, and there was no evidence of its being a garden 
escape. 
Bidens comosa (Gray) Wiegand. Wet roadside, Warren, Worcester 
county. 
Matricaria discoidea, DC. I found a fine specimen of this in 
