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Equisetum arvense L.

10 photos.
Possibly the widest-ranging plant species on the planet this species is referred to as the
"common horsetail", "field horsetail" and "scouring rush".

ITIS Taxonomic Serial No. 17152


1.  May 28, 2008.  Spring photo of fertile and sterile stems. The fertile stems
will soon wither and die after producing their spores.

 

 

 

 

 

 

 

 


2.  May 28, 2008.  Fertile stems tipped with cones
which produce spores.

3.  May 28, 2008.  Closeup of a cone.
The stalk never turns green.

4.  May 28, 2008.  A sterile stem which will persist
throughout the summer.  Eventually
it will turn entirely green.

5.  May 28, 2008.  Closeup of a sterile
stem.
.
6.  May 20, 2009.  Sterile stems branching
out and turning green

7.  August 16, 2009.  Late summer photo
of a large group of plants.


8.  May 24, 2012.  Maturing cone.

9 .  May 24, 2012. Another maturing cone.

10 .  May 24, 2012.  Stem sheath on a
Fertile Stem.

Photos 1-5 taken along Upper Bottom
Dollar Road.
65°  25.2' N,   144°  48.5' W
Elev. 1900 ft.

Photo 6 taken above Circle
Hot Springs
65°  29.00' N,  144° 38.65' W
Elev. 950 ft.

Photo 7 taken along the Steese
Highway west of Central.

Photos 8-10 near upper Half Dollar
Creek.
65° 25.5' N, 144° 45.9' W
Elev. 2100 ft.