164 Rhodora [SEPTEMBER 
campester, has white lamellae in its young stage, while those of 4. 
campester are pink. The pileus is also larger and smoother. The 
best marks by which to recognize it are its peculiar characteristic bulb 
and its stuffed or hollow, long, tapering stem. 
MIDDLEBURY COLLEGE, MIDDLEBURY, Vr. 
[As it is not unlikely that readers of Mr. Smith's article on species of Agaricus 
may use it as a guide to make sure of the common edible pasture mushroom ( A. cam- 
pestris L.), it may be well to add that of the other species mentioned the following 
are beyond question edible: 4. arvensis, A. silvicola and A. Rodmani. It is im- 
portant to state, however, that 4. cozi£u/us has a bad reputation; and further that 
cases of illness have been reported from eating fungi that closely resemble 4. 
placomyces, although the identity of these noxious forms cannot be precisely stated 
with the information at hand. — Eb.] 
ADDITIONS TO THE FLORA OF AMHERST, 
MASSACHUSETTS. 
HUBERT LYMAN CLARK. 
Ir is now nearly twenty-five years since the appearance of the last 
edition of Professor Tuckerman's Catalogue of Plants growing with- 
out cultivation within thirty miles of Amherst College. Since that 
time a number of plants have become fairly common in Amherst 
which were then unknown there, most of them having been introduced 
as weeds." Since 1890, I have spent four seasons wholly or in part 
botanizing around Amherst, and the following flowering plants have 
come under my notice which are not given in Tuckerman's list. The 
nomenclature used is that of the sixth edition of Gray's Manual. 
1. Coronilla varía. Quite common in the last few years in several 
roadside fields about town. 
2. Amorpha fruticosa. Abundant by the roadside near the “ Col- 
onel Clark” place. 
3. Callitriche heterophylla. Collected in a pool on the east side of 
Mt. Warner in May, 1899. 
4. Carum carui. Quite common by the roadsides in Leverett in 
1899. 
5. Onopordon acanthium. | Found near the Agricultural College in 
the summer of 1890. 
6. Hieracium aurantiacum. Not rare in 1890 in the lawn near 
the plant-house at the Agricultural College. 
7. Lysimachia nummularia. Now a common and, in some places, 
troublesome weed. 
8. Pentstemon pubescens. Near East Amherst in 1890. 
