Test Biological Study Area 4/27/04

Each row is a species. Click on the species name in the table below or simply scroll down. Hovering your cursor over the first picture in each row will give you the species name and family. Clicking on each picture will give you an expanded version.

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Acer rubrum Acer saccharinum Barbarea vulgaris Capsella
bursa-pastoris
Conium maculatum Geranium maculatum
Hydrophyllum macrophyllum Polemonium reptans Populus deltoides Sambucus canadensis Senecio glabellus Xanthoxylum americanum


Acer rubrum   (Aceraceae)

   

young trunk with smooth gray bark

mature trunk with shreddy bark and orange underwear
leaves with V-shaped sinus and serrated lobe margins

bud-break, note opposite red (last year) twigs - 4/24/04

winter twigs with bright red buds

 

Acer saccharinum   (Aceraceae)

   

young tree

middle-sized tree
mature tree with shreddy bark and orange underwear

 

leaves have u-shaped sinus with a point; leaf margins serrate; mature leaves green on top, silver underneath

 

Barbarea vulgaris   (Cruciferae)
an abundant agricultural weed
4/24/04

 

     

 

Capsella bursa-pastoris   (Cruciferae)
   
an abundant agricultural weed
silicle is very characteristic

 

Conium maculatum   (Umbelliferae)
   
A large rosette with highly dissected foliage
purple freckles on petioles and stems

 

Geranium maculatum   (Geraniaceae)

 

distinctive palmately lobed leaves
pretty!

 

 

Hydrophyllum macrophyllum   (Hydrophyllaceae)
     
deeply palmately lobed/compound with many leaflets vs.
H. appendiculatum
     

 

Polemonium reptans   (Polemoniaceae)
pinnately compound leaves
flowers cup-shaped
 

 

Populus deltoides   (Salicaceae)
   

mature bole with deeply furrowed bark

another mature trunk
a younger trunk
flowering individual; note smooth, white bark at top and on young trees -- aspen-like!
leaves triangular-like in outline (deltoid) with large teeth; twig orange-brown
   

 

Sambucus canadensis   (Caprifoliaceae)

     
opposite pinnately compound leaves with light-colored mid-vein
an individual leaf
   

 

Senecio glabellus   (Compositae)

an abundant agricultural weed
4/25/04
stems are ribbed and leaves are compound

 

Xanthoxylum americanum    (Rutaceae)
   
a treelet with pairs of stipular thorns and pinnately compound leaves
a flowering individual (4/24/04)

 

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