Deschampsia cespitosa

Deschampsia cespitosa, commonly called tufted hairgrass, is a native perennial, tussock- forming grass. It is also called Beringian grass.

Synonyms:

• Agrostis caespitosa (L.) Salisb.
• Aira alpicola (Rydb.) Rydb.
• Aira ambigua Michx.
• Aira aristulata Torr.
• Aira caespitosa Muhl.
• Aira cespitosa L.
• Avena caespitosa (L.) Kuntze
• Campella caespitosa (L.) Link
• Deschampsia alpicola Rydb.
• Deschampsia ambigua P. Beauv. ex B.D. Jacks.
• Deschampsia andina Phil.
• Deschampsia biebersteiniana Schult.
• Deschampsia caespitosa (L.) P. Beauv.
• Deschampsia caespitosa ssp. genuina (Reichenb.) Volk.
• Deschampsia cespitosa var. confinis Vasey ex Beal
• Deschampsia cespitosa ssp. genuina (Reichenb.) Volk.
• Deschampsia cespitosa var. strictior Kurtz
• Deschampsia confinis (Vasey ex Beal) Rydb.
• Deschampsia pungens Rydb.
• Podionapus caespitosus (L.) Dulac

References

Seed

Abbreviation: DECE

Average Measurement with husk/awn: 3.4 x 0.8 x 0.8

Average Measurement without husk/awn: 1.8 x 0.6 x 0.6

Measurement Range with husk/awn: L: 2.5 – 4.5, W: 0.5 – 1, D: 0.6 – 1

Measurement Range with husk/awn: L: 1.5 – 2, W: 0.5 – 0.75, D: 0.5 – 0.6

Features

Shape: Seed narrow at hilum and opposite apex, rounded in the middle.

Additional Structures: Lemma thin, and have several nerves running across them. Awn originates from the hilum and is about 1 ½ times the length of the seed body. Hilum bearded with feather like appendage. Palea also thin.

Color: Tan palea and lemma, awn slightly darker brown. Inner seed red-brown, and somewhat transparent.

Surface: Seed finely longitudinally striate and lustrous. Awn finely barbed.

Latitudinal Cross Section: elliptical

Longitudinal Cross Section: elliptical