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Avena fatua L.

Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily

Festucoideae イチゴツナギ亜科
Avena L. (カラスムギ)

Avena fatua L. in Hokkaido

Karasumugi (カラスムギ, 烏麦), common wild oats
Lifeform: biennial grass
Distribution: native to Europe and east Asia

→ widespread exotic to southern America, Africa, Asia and Oceania → Japan: immigrated in pre-history era

Habitat: sunny grasslands, incluidng abandoned pastures, roadsides, etc.
Stem: round, hollow, and lobed sheath
Arista: present ↔ A. sativa = absent
var. glabrata Peterm. (コカラスムギ)

Avena sativa L. in Hokkaido

Enbaku (エンバク, 燕麦), common oats
Makarasumugi (マカラスムギ, 真烏麦)
Chromosome number: 2n = 42
Use: a cereal crop of global importance
floral diagram
Floral diagram
separated the leaf from the stem
Developing only fibrous root
120 cm tall
The sample was collected from Hokkaido University Campus on July 5 1983.
flower flower
Flower seeing from the top___from the side

lodicule (鱗片)

Spikelet: no arista, 2 cm long

fg = first glume
sg = second glume