132 Rhodora [JULY 
TIARELLA CORDIFOLIA L., forma parviflora, n. f., a forma typica 
recedit petalis 2-3 mm. longis lineari-lanceolatis vel anguste oblanceo- 
latis; filamentis maturis 1.5-3 mm. longis. 
Differing from the typical form in having the linear-lanceolate or 
narrowly oblanceolate petals 2-3 mm. long, and the mature filaments 
1.5-3 mm. long.— Massacnuserts: forming a large colony on the 
wooded bank of the Boston and Albany Railroad, east of the station, 
Becket, May 31, 1915, M. L. Fernald, no. 15,172 (type in Gray Herb.). 
Very obvious in the field on account of its small flowers; typical 
T. cordifolia having the broader petals 4-6 mm. long and the mature 
filaments 4-7 mm. long. In all other respects the Becket colony of 
forma parviflora is like the abundant large-flowered plant of the 
region: the petals are entire and there is no indication that it belongs 
in the series of specimens which seem to be hybrids between Mitella 
diphylla and Tiarella cordifolia, in which the petals are usually 
toothed.! — M. L. FERNALD, Gray Herbarium. 
SOME FURTHER PLANTS FOUND ON WooLwasTE AT WESTFORD, 
Massacuusetts.— During the past summer I have continued to note 
the unusual plants that have sprung up on land at Westford which 
has been fertilized with a dressing of woolwaste. Four, which were 
unfamiliar, have been found and taken to the Gray Herbarium, 
where they have been identified for me by Dr. Robinson, Dr. S. F. 
Blake, and Mr. J. F. Macbride. They have been as follows: Sida 
spinosa L. and Erodium moschatum (L.) L’Hér., both of which I am 
told are not infrequent as casual introductions in waste places and 
dumping grounds about cities. Malvastrum coromandelianum (L.) 
Garcke, generally known as M. tricuspidatum Gray, a plant of our 
southern states and occasionally found as a ballast weed in the middle 
Atlantic states, though not recorded north of New Jersey. And 
Erodium Stephanianum Willd., an Asiatic species, rather widely 
distributed from the Caucasus region to southern China, but not 
hitherto reported in America even as an introduction.— EMILY F. 
FLETCHER, Westford, Massachusetts. 
1 See Ruopora, viii. 91 (1906). 
Vol. 19, no. 222, including pages 93 to 112, was issued 5 June, 1917. 
