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- Diphasiastrum tristachyum (category Diphasiastrum)but much more widespread in Europe. Diphasiastrum × sabinifolium (Willdenow) Holub (= D. sitchense X tristachyum) is widespread and frequent in eastern5 KB (595 words) - 20:24, 5 November 2020
- X morganii). Other hybrids are common, e.g., Diphasiastrum sitchense X tristachyum (= D. X sabinifolium),Equisetum hyemale X laevigatum (= E. X ferrissii)69 KB (10,503 words) - 22:43, 13 February 2019