Observations on the pollination of Pelargonium tricolor, section Campylia (Geraniaceae)

A group of four species of Pelargonium L’Hérit. in the section Campylia (Sweet) DC. have embossed ‘warty areas’ at the bases of the posterior petals of the zygomorphic flowers. In Pelargonium tricolor Curt, these embossed areas are most distinctive. The significance of these embossed areas in the attraction of insect pollinators is discussed. From repeated observations of P. tricolor it is concluded that these areas are false nectaries and that they are effective in attracting dipteran pollinators. Megapalpus capensis Wiedemann (Diptera: Bombyliidae), in particular, exhibits strong association with these false nectaries. It is further predicted that the embossed areas on the petals of the remaining three species in the group, namely P. capillare (Cav.) Willd., P. ocellatum J.J.A. van der Walt and P. incarnatum (L’Hérit.) Moench have similar value for attracting anthophilous insects

A new species of Pelargonium section Campylia (Geraniaceae)

[No abstract available]Articl

Boraginaceae. The taxonomic status of Lobostemon horridus

[No abstract available]Short Surve

A new species of Lobostemon section Grandiflori (Boraginaceae) from South Africa

A new species of Lobostemon Lehm. (Boraginaceae), placed in the section Grandiflori Levyns, is described. Illustrations of the macromorphology, leaf anatomy, indumentum and fruit, as well as a distribution map, are provided. The somatic chromosome number is 2n = 14. A key is proffered to distinguish between the four species now recognized in the section.Articl

Lobostemon daltonii (Boraginaceae): A new species from the Western Cape, South Africa

A new species of Lobostemon Lehm. (Boraginaceae), placed in the section Fruticosi Levyns, is described from Cape Infanta region in the Western Cape, South Africa. Illustrations of the macromorphology, indumentum, stigma and style, fruit as well as a distribution map, are provided.Articl

A new species of Lobostemon section Grandiflori (Boraginaceae) from South Africa

A new species of Lobostemon Lehm. (Boraginaceae), placed in the section Grandiflori Levyns, is described, Illustrations of the macromorphology, leaf anatomy, indumentum and fruit, as well as a distribution map, are provided. The somatic chromosome number is 2n=14. A key is proffered to distinguish between the four species now recognized in the section