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| | PBIO 450 Lecture Notes - Dilleniidae -- Spring 1999 |
 | | I restrict the Malvales to six families (Tiliaceae, Dirachmaceae, Byttneriaceae, Sterculiaceae, Bombacaceae and Malvaceae) and divided the Cistales into the Bixales (with Sphaerosepalaceae, Diegodendraceae, Bixaceae and Cochlospermaceae) and the Cistales proper (Muntingiaceae, Cistaceae, Monotaceae, Dipterocarpaceae and Sarcolaenaceae). |
 | | The Bombacaceae are clearly related to the Sterculiaceae and the Malvaceae and in the past their members were frequently included in the former. |
 | | Cronquist (1988) separates the Bombacaceae from the Malvaceae by such fine and technical differences as generally smooth or merely rugose, triaperturate pollen grains versus minutely spiny, pantoporate grains, and yet the statement "large trees" is often diagnostic enough to distinguish Bombacaceae from the herbaceous to shrubby or occasionally small-treed Malvaceae. |
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