| Chenopodium hybridum subsp. giganthospermum (Aellen) Hult. |
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Family | Chenopodiaceae — APG family: Amaranthaceae |
Synonyms | Chenopodium hydridum var. giganthospermum (Aellen)Rouleau., Chenopodium giganthospermum Aellen |
Description | Glabrous, much branched annual; leaves thin, bright green, ovate, with rounded or subcordate base and triangular lobes; panicle loose, with leafless branches; calyx thin, with lanceolate to ovate segments; seeds black, lenticular, lustrous, 1.2-2 mm in diameter. |
Ecology | Waste places; weed at Dawson. C. hybridum described from Europe, subsp. giganthospermum from Canada, United States. Broken line on circumpolar map indicates range of subsp. hybridum. |