Difference between revisions of "Cerastium arvense"
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'''Abbreviation code:''' CEAR | '''Abbreviation code:''' CEAR | ||
==Taxonomy== | ==Taxonomy== | ||
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| + | ==Seed== | ||
[[File:CEAR.png|thumb|right|300px|''Cerastium arvense'' seeds </br> Photo Credit Lisa Hintz]] | [[File:CEAR.png|thumb|right|300px|''Cerastium arvense'' seeds </br> Photo Credit Lisa Hintz]] | ||
'''Seed sample from:''' 2011 | '''Seed sample from:''' 2011 | ||
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'''Measurement Range: L:''' 0.75 – 1, W: 0.8 – 1, D: 0.4 – 0.6 | '''Measurement Range: L:''' 0.75 – 1, W: 0.8 – 1, D: 0.4 – 0.6 | ||
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'''Shape:''' Seed somewhat kidney shaped, narrower at hilum and broadening at opposite apex. Hilum pinched. | '''Shape:''' Seed somewhat kidney shaped, narrower at hilum and broadening at opposite apex. Hilum pinched. | ||
Revision as of 12:38, 11 May 2012
Common name: Field chickweed
Abbreviation code: CEAR
Taxonomy
Description
Seed
Seed sample from: 2011
Average Measurement: 0.9 x 0.9 x 0.5
Measurement Range: L: 0.75 – 1, W: 0.8 – 1, D: 0.4 – 0.6
Shape: Seed somewhat kidney shaped, narrower at hilum and broadening at opposite apex. Hilum pinched.
Color: Rusty brown to orange brown. Hilum white.
Surface: Matte and covered with many small bumps, arranged in concentric half circles originating at the hilum and broadening at the opposite apex.
Latitudinal Cross Section: elliptical 
Longitudinal Cross Section: obovate 
Basic Explanations and Assumptions:
The dimensions for the seeds are length x width x depth. The location of the hilum is used as the base of the seed, and the length is measured from hilum to the opposite apex. Where a style is present, the length is measured from the hilum to the bottom of the style. Width is measured at a right angle to the length at the widest part. Depth is measured at a right angle to the intersection of height and width lines.
Measurements included are the mean average for each measurement of ten separate seeds.
All measurements in millimeters unless otherwise noted.
