Hedeoma drummondii

Irving and Adams (1973) found that essential oil components of Hedeoma drummondii and H. reverchonii var. re-verchonii (Lamiaceae) were additive or complementary in Fi hybrids of the two species. In F2 hybrids, plants were intermediate in chemisCry, some of which resembled each parent, and a few with novel chemistry were observed (Irving and Adams, 1973). 

Multiallelic genetic determination was stipulated for the inheritance of borneol and 1,8-cineole in Hedeoma drummondii (Irving and Adams, 1973) or for the inheritance of camphor in T. vulgare (Holopainen et ah, 1987). 

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