ECOLOGICAL STUDY OF BRUSH LAKE. 159 
The plants in the zone are as follows: 
HOMOSPOROUS PTERIDOPHYTES. 
Equisetum fluviatile L. Dryopteris thelypteris (I,.) Gr. 
SEDGES. 
Cyperus strigosus L. Carex frankii Kunth. 
Eleocharis palustris (L.) R. & S. ‘«  granularis Muhl. 
ss palustris glaucescens ‘© hystricina Muhl. 
[( Willd.) Gr. ‘““  Januginosa Mx. 
as acicularis (l).) R. & S. ‘* shortiana Dew. 
Scirpus fluviatilis (Torr.) Gr. ‘* stipata Muhl. 
‘© atrovirens Muhl. ‘* stricta Law. 
“«  lineatus Mx. ‘* straminea ferruginea Bail. 
Carex albolutescens Schwein. (?). [(C. alata ferruginea Fern. ) 
‘* comosa Boott. ‘*  yulpinoidea Mx. 
‘« cristatella Britt. 
GRASSES. 
Echinochloa crus-galli (1,.) Beauv. Panicularia nervata (Willd.) Ktz. 
Panicum capillare L. 
OTHER MONOCOTYLS. 
Sparganium eurycarpum Engel. Juncus tenuis Wild. 
Spathyema foetida (L.) Raf. ‘© torreyi Cav. 
HERBACEOUS DICOTYIS. 
Batrachium divaricatum (Schr. ) Mentha canadensis L. 
[Wimm. Mimulus ringens L. 
Caltha palustris L. Pedicularis lanceolata Mx. 
Cardamine bulbosa (Schreb.) B.S. P. Angelica atropurpurea L,. 
a pennsylvanica Muhl. Galium claytoni Mx. 
Roripa palustris (1L.) Bess. ‘«  tinctorium L. 
Penthorum sedoides L. ‘« asprellum Mx. 
Geum virginianum L. Valerianella radiata (1,.) Dufr. 
Naumbergia thyrsiflora (1,.) Duby. Lobelia syphilitica L. 
Asclepias incarnata L, Aster puniceus L. 
Lycopus americana Muhl. Senecio aureus L. 
SHRUBS. 
Cephalanthus occidentalis L,. 
_. 6. SHRuB Zone. This is a Salix-Cephalanthus-Cornus- 
Rosa zone. It is almost continuous around the lake except at 
the south side where it is poorly developed. forming only a nar- 
row, interrupted belt between the forest and water. At the 
north end the zone is 30 feet wide. Here abound some of our 
