Sedgwick's Rock Preserve (second visit) 4/26/04

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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Antennaria plantaginifolia Arisaema triphyllum Asarum canadense Camptosorus rhizophyllus Cardamine bulbosa Cornus alternifolia
Cystopteris bulbifera Galium concinnum Hydrangea arborescens Hydrophyllum appendiculatum Impatiens sp. Laportea canadensis
Mitella diphylla Pinus strobus Pinus sylvestris Polygonatum biflorum Sedum ternatum Senecio obovatus
Silene virginica Smilacina racemosa Staphylea trifolia Stellaria pubera Trillium grandiflorum  

Antennaria plantaginifolia   (Compositae)

 

 

   

Dioecious; female

male ramets
male discoid head

note creeping stolons

 

Arisaema triphyllum   (Araceae)  

 

 

 

 

   

spathe partially removed to show female flowers

sequentially dioecious

 

 

Asarum canadense   (Aristolochiaceae)
mature foliage persists into summer shade
flower positioned at ground surface; attracts beetles

emerging ramets in early April

     

 

Camptosorus rhizophyllus   (Polypodiaceae)
     
elongate leaf tips root to form new ramets
a true calciphile

 

Cardamine bulbosa   (Cruciferae)
   
pure white flowers; leaves sessile, coarsely toothed; leaves shiny green
flowers later (4/25/04) than C. douglassii (late March)

 

Cornus alternifolia   (Cornaceae)

 

arching veins is characteristic of genus
note alternate leaf scars from previous year
a small treelet/tree

 

 

Cystopteris bulbifera   (Polypodiaceae)
 
reddish brown petiole and rachis
basal pinnae are longest
a calciphile
 

 

Galium concinnum   (Rubiaceae)
smaller, narrower leaves than G. aparine, typically 6 lvs/node
 

 

Hydrangea arborescens   (Saxifragaceae)
   

last year's inflorescense showing two flower types: sterile petaliferous at edge, and small fertile in center

a scraggly shrub;
twig with large, soft pith
   

 

Hydrophyllum appendiculatum  (Hydrophyllaceae)

     
leaves 5-lobed
biennial: 2nd year on left with developing inflorescence (4/25), seedling on right (note cotyledons)
   

 

Impatiens sp.   (Balsaminaceae)

There are two species distinguish-able only when in flower. I pallida has a yellow flower, while the flowers of I. capensis are orange.    
seedling on 4/25/04, note gray-green cotyledons and large rounded teeth on leaf margin
a dominant shade tolerant herb in summer
   

 

Laportea canadensis   (Urticaceae)

 

 

 

 

deeply veined, large teeth
large urticating hairs evident on stem

 

Mitella diphylla   (Saxifragaceae)
 
1 pair of leaves on each flowering stem
close-up shows feather petals

 

Pinus strobus   (Pinaceae)
   
young tree
soft needles
4-5 needles per bundle

 

Pinus sylvestris   (Pinaceae)
   
mature tree with orange bark
stiff short needles
2 twisted needles per bundle

 

Polygonatum biflorum   (Liliaceae)

     
1-2 axillary flowers per node on a fertile shoot
leaves with more rounded tips and less deeply veined than
S. racemosa
 

 

Sedum ternatum   (Crassulaceae)

succulent leaves, flowers white

leaves whorled, 3/node

typically growing on rock surfaces

 

Senecio obovatus   (Compositae)

     
a forest composite (4/25/04)

above: head
below: basal leaves obovate




Silene virginica   (Caryophyllaceae)
unmistakable; note notched ("pinked") petals

 

Smilacina racemosa   (Liliaceae)
     
"veins in valleys", leaf tips acuminate
terminal inflorescence

 

Staphylea trifolia   (Staphyleaceae)
     
opposite, trifoliate leaves; leaflets serrate
a treelet

 

Stellaria pubera   (Caryophyllaceae)
     
flowers >1cm diameter
flowers later than many ephemerals (4/25/04)

 

Trillium grandiflorum   (Liliaceae)
 
unmistakable; petals fade to pinkish tone
often clonal

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