Twin Island F (Big Twin)
View of north shore of Twin Islands F on left and G on right
Note
Island camping has been prohibited since around 2003
The 2000 flora and fauna summary
This island witnesses the most human disturbance as campers have created a trail system, built a board and pit privy, and fire pits at tent sites.
The island is well treed with a good diversity of herbs. An understory of American Basswood, mostly shrub sized, was in contrast to Green Island and Island G where this species was absent. Also, Trembling Aspen was present here. Some of the interesting herb species were found along the rocky shoreline where they clung to a foothold: Common Bearberry, Pale Corydalis and Fragrant Cudweed were interesting finds.
A rare butterfly for Renfrew County was the Satyr Comma (Polygonia satyrus) spotted on Island F on July 13. This butterfly was known until this year by old specimens in a local collection (Michener, 2000). This was the first I had seen and lent some excitement to the day!
Island "F" Plant Survey
OPLID
108
182
264
448
475
572
620
698
705
1057
1385
1861
2020
2021
2089
2464
2893
2944
3250
3255
3970
4043
4067
4132
4170
4248
4414
4419
4563
4609
common name
Staghorn Sumac
Spreading Dogbane
Field Pussytoes
Fragrant Cudweed
Field Hawkweed
Goldenrod spp
Common Dandelion
Speckled Alder
White Birch
Larger Mouse-ear Chickweed
Eastern White Cedar
Common Bearberry
Yellow Clover
Large Hop Clover
Pale Corydalis
Northern Water-horehound
Common Evening Primrose
Common Helleborine
Balsam Fir
White Spruce
Juneberry sp
Common Strawberry
Silver Cinquefoil
Smooth Rose
Common Raspberry
Trembling Aspin
Common Mullein
Corn Speedwell
American Yew
Basswood
scientific name
Rhus typhina
Apocynum androsaemifolium
Antennario neglecta
Gnaphalium obtusifolium
Gnaphalium obtusifolium
Solidago spp
Taraxacum officinale
Alnus incana
Betula papyrifera
Cerastium fontanum
Thuja occidentalis
Arctostaphylos uva-ursi
Trifolium aureum
Trifolium campestre
Corydalis sempervirens
Lycopus uniflorus
Oenothera biennis
Epipactis helleborine
Abies balsamea
Picea glauca
Amelanchier sp
Fragaria virginiana
Potentilla argentea
Rosa blanda
Rubus idaeus
Populus tremuloides
Verbascum thapsus
Veronica arvensis
Taxus canadensis
Tilian americana
Introduced
yes
yes
yes
yes
yes
yes
yes
yes
yes
status
c
u
c
u
r
c
c
c
u
u
u
u
u
u
u
u
r
c
u
c
c
u
c
c
u
r
u
u