Danthonia californica

From Puget Prairie Plants
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Abbreviation: DACA

Seed sample from: 2011

Average Measurement with husk/awn: 13.75 x 1.5 x 0.8

Measurement Range with husk/awn: L: 12 - 16, W: 1.2 - 1.9, D: 0.75 - 1

Average Measurement without husk/awn: 3.5 x 1.5 x 0.9

Measurement Range without husk/awn: L: 3.25 - 3.75, W: 1.3 - 1.75, D: 0.75 - 1.1


Shape: Seed tapered at ends, hilum flared into two points.

Color: Seed light brown, husk cream colored.

Additional Features: Lemma sharply pointed and has several nerves. Palea rounded at top. Lemma fringed at inner edge with, white bristles and bearded at hilum. Awn cork screws once or twice and then straightens.

Surface: One seed face has a groove that runs longitudinally almost entire length of seed. The opposite seed face has a depression that forms an elliptical ridge. Seed is very finely textured with longitudinal lines and is slightly shiny.

Latitudinal Cross Section: elliptical DACA lat.png

Longitudinal Cross Section: elliptical DACA long.png

Danthonia californica
Danthonia californica

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.