1920] Coburn,—Flora of Birch Island in Attean Pond 133 
wayside plants, probably mostly of recent introduction from the south, 
while the waste ground back of the camps and round the chicken 
pens has been seized upon by some of the weeds that follow habita- 
tion. 
The flora of Birch Island divides itself naturally into seven lists: 
I. The forest flora. 
II. Flora of the rocky shore below high water line. 
III. Flora of the marshes. 
IV. Flora of the gravel beaches. 
V. Water flora of the coves. 
VI. Flora of the cleared ground: 
VII. Waste ground flora. 
These lists somewhat overlap. In a few cases I have placed the 
same name in two or more lists, where the plant seemed to have more 
than one natural station. The total number of species and varieties 
found on Birch Island is 255. Specimens of all plants mentioned 
have been examined and their names verified by Prof. M. L. Fernald 
of Gray Herbarium, Harvard University. 
I. Forest FLORA 
Polypodium vulgare L. 
Phegopteris polypodioides Fée. 
P. Dryopteris (L.) Fée. 
Pteris aquilina L. 
Aspidium noveboracense (L.) Sw. 
A. cristatum (L.) Sw. 
A. spinulosum (O. F. Müller) Sw. 
A. spinulosum, var. intermedium 
(Muhl.) D. C. Eaton. 
Dicksonia punctilobula (Michx.) 
Gray. 
Osmunda Claytoniana L. 
O. cinnamomea L. 
Botrychium ternatum (Thunb.) 
Sw., var. intermedium D. C. 
Eaton. 
Lycopodium lucidulum Michx. 
L. annotinum L. 
L. clavatum L. 
L. obscurum L. 
L. complanatum L., var. flabelli- 
forme Fernald. 
'Taxus canadensis Marsh. 
Pinus Strobus L. 
P. Banksjana Lamb. 
P. resinosa Ait. 
Picea canadensis (Mill.) BSP. 
P. rubra (DuRoi) Dietr. 
Abies balsamea (L.) Mill. 
Thuja occidentalis L. 
Panicum boreale Nash. 
Agrostis hyemalis (Walt.) BSP. 
A. perennans (Walt.) Tuckerm. 
Poa nemoralis L. 
Carex stellulata Good. 
C. rosea Schuhr., 
var. radiata Dewey. 
C. brunescens Poir. 
C. debilis Michx., 
var. Rudgei Bailey. 
C. intumescens Rudge, 
var. Fernaldii Bailey. 
Clintonia borealis (Ait.) Raf. 
Maianthemum canadense Desf. 
