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PBIO 450 Lecture Notes - Dilleniidae -- Spring 1999 |
 | | There is no question that the Pyrolaceae are a derived and specialized subset of ericoid genera easily distinguished by their small, undifferentiated acotyledonous embryo, green leaves, anthers seemingly with apical pores, and pollen grains shed in tetrads. |
| | In the case of Pyrolaceae and Monotropaceae - as well as Lemnaceae and Araceae - the point of origin in terms of the family is still extant, and in fact so too is the group of plants (a taxonomic tribe or subfamily) from which the derived families had their direct origin. |
| | Like the Pyrolaceae, their point of origin is the tribe Andromedeae (G. Don) Klotzsch of the subfamily Vasccinioideae in the Ericaceae. |
| www.life.umd.edu /emeritus/reveal/PBIO/pb450/dill12.html (1817 words) |
