| 5473042 |
northern red oak |
Quercus rubra |
Quercus rubra (northern red oak) developing female flowers on 'scrub' oak near cliff edge; late May |
| 5473069 |
catberry |
Ilex mucronata |
male flower and developing leaves on Ilex mucronata (syn. Nemopanthus mucronatus), mountain-holly |
| 5473041 |
northern red oak |
Quercus rubra |
Quercus rubra (northern red oak) male flowers on 'scrub' oak near cliff edge; late May |
| 5472349 |
bog birch |
Betula pumila |
Betula pumila (bog birch) female catkin |
| 5472351 |
bog birch |
Betula pumila |
Betula pumila (bog birch) catkins (pinkish-red stigmas are visible on female catkins) |
| 5472358 |
bog birch |
Betula pumila |
Betula pumila (bog birch) female catkin |
| 5472382 |
mountain alder |
Alnus viridis ssp. crispa |
Alnus viridis subsp. crispa (green alder/mountain alder) male and female catkins |
| 5472381 |
mountain alder |
Alnus viridis ssp. crispa |
Alnus viridis subsp. crispa (green alder/mountain alder) receptive female catkins |
| 5472378 |
bog willow |
Salix pedicellaris |
Salix pedicellaris (bog willow) male plant/catkins |
| 5472369 |
bog birch |
Betula pumila |
Betula pumila (bog birch) catkins (pinkish-red stigmas are visible on female catkins) |
| 5472368 |
bog birch |
Betula pumila |
Betula pumila (bog birch) developing male catkin |
| 5472341 |
bog birch |
Betula pumila |
developing male catkin on Betula pumila (bog birch) |
| 5474028 |
northern catalpa |
Catalpa speciosa |
Catalpa speciosa (northern catalpa) |
| 5472104 |
hophornbeam |
Ostrya virginiana |
male ironwood (Ostrya virginiana) catkins expanding |
| 5472064 |
beaked hazelnut |
Corylus cornuta |
beaked hazel (Corylus cornuta) female flower |
| 5473458 |
mountain maple |
Acer spicatum |
Acer spicatum (mountain maple) characteristic upright flower spike |
| 5468119 |
speckled alder |
Alnus incana ssp. rugosa |
Male and Female catkins of a speckled alder during winter |
| 5454120 |
hophornbeam |
Ostrya virginiana |
ironwood (Ostrya virginiana) male catkins |
| 5468545 |
willow |
Salix spp. |
willow, Salix spp. |
| 5465776 |
speckled alder |
Alnus incana ssp. rugosa |
speckled alder (Alnus incana subsp. rugosa) winter twig showing characteristic stalked vegetative buds and preformed male and female flowers (catkins) extending from the twig tip |
| 5455693 |
common chokecherry |
Prunus virginiana |
chokecherry (Prunus virginiana) flowers; early June |
| 5455694 |
black cherry |
Prunus serotina |
black cherry flowers (Prunus serotina); mid-June |
| 5454851 |
speckled alder |
Alnus incana ssp. rugosa |
speckled alder (Alnus incana subsp. rugosa) preformed male and female catkins and spent female catkins (January) |
| 5454852 |
speckled alder |
Alnus incana ssp. rugosa |
speckled alder (Alnus incana subsp. rugosa) preformed male catkins (the long structures) and preformed female catkins (small structures above male catkins); January |
| 5444742 |
striped maple |
Acer pensylvanicum |
striped maple (Acer pensylvanicum), May 29 |
| 5444743 |
striped maple |
Acer pensylvanicum |
striped maple (Acer pensylvanicum), May 29 |
| 5444369 |
mountain alder |
Alnus viridis ssp. crispa |
green alder (Alnus viridis subsp. crispa); mid-May; receptive female catkins on long, erect stalks; male 'pollen' catkins hanging; last years female catkins in foreground |
| 5444372 |
Canadian plum |
Prunus nigra |
Canada plum (Prunus nigra); May 22 |
| 5444373 |
Canadian plum |
Prunus nigra |
Canada Plum (Prunus nigra); May 22 |
| 5443321 |
American elm |
Ulmus americana |
American elm (Ulmus americana) flowers (May 12) |
| 5443322 |
green ash |
Fraxinus pennsylvanica |
red ash (Fraxinus pennsylvanca) female flowers |
