Trends of Specialization in Pollen of Flacourtiaceae with Comparative Observations of Cochlospermaceae and Bixaceae

Floral Development of Berberidopsis corallina: a Crucial Link in the Evolution of Flowers in the Core Eudicots

“…The pentamerous construction and presence of petals is reminiscent of Aextoxicon. However, Keating (1975) found the pollen of Streptothamnus moorei to be indistinguishable from Erythrospermum. More studies of the flower of Streptothamnus, as well as a study of the molecular architecture of the genus are essential to understand its position relative to Berberidopsis, Aextoxicon and Flacourtiaceae.…”

“…Berberidopsis differs from Streptothamnus in several respects (see Keating, 1975;Baas, 1984;Van Heel, 1984;Veldkamp, 1984). These differences include interesting floral morphological features in Streptothamnus, such as cyclic flowers with usually five persistent calyx lobes and five caducous petals, the absence of the persistent extrastaminal disc, four placentae, numerous stamens with long filaments and an inconspicuous connective.…”

“…Although Streptothamnus moorei is dissimilar from Berberidopsis in several respects (e.g. pollen: Keating, 1975;Van Heel, 1984;wood anatomy: Baas, 1984), their association has not been questioned.…”

“…Warburg maintained Berberidopsis and Erythrospermum in tribe Erythrospermeae, while Gilg placed both genera in tribe Oncobeae. The placement of Berberidopsis in Flacourtiaceae has been maintained in all premolecular systems of classification, although the isolated position of the genus in Flacourtiaceae was recognized and discussed on the basis of pollen (Keating, 1975;Van Heel, 1984) and wood anatomy (Miller, 1975;Baas, 1984). Compared with Flacourtiaceae, wood of Berberidopsis and its associated genus Streptothamnus (see below) is more primitive.…”

Pollen Morphology, Trichome Types, and Relationships of the Gronovioideae (Loasaceae)

“…The pollen morphology of at least one family in the Violales, Flacourtiaceae (Keating, 1973(Keating, , 1976, is quite variable, and it does include striate-reticulate tecta Table 3, and the analysis is based on the data matrix given in Table 4. Numbers in parentheses refer to character states used with multistate characters.…”