@article {5611, title = {Tetrad pollen formation in Annona (Annonaceae): Proexine formation and binding mechanism}, journal = {American Journal of BotanyAmerican Journal of Botany}, volume = {89}, number = {5}, year = {2002}, month = {May}, pages = {734-747}, abstract = {Meiotic tetrads of Annona glabra and A. montana build up a well-developed proexine (protectum, probaculum, and pronexine) at the proximal side but only a thin pronexine at the distal side during the tetrad stage. The callosic envelope is only partially digested by the end of tetrad stage. The remaining, undigested part is composed of the intersporal mass and thin peripheral layers, and the latter is conjunct with the distal pronexine of the microspore. In this remaining callosic structure celluloses are also present. Later on, due to the continuous slow decomposition of this callose-cellulose structure and microspore expansion, microspores break up the callose-cellulose envelope. Because all the four microspores are bound together by the callose-cellulose structure, they move out of the chamber in rotation. Eventually the thin pronexine is pulled toward the center of the tetrad and the well-developed proexine becomes the distal wall. These descriptions of the partial digestion of callosic envelope, the transformation from a callose-cellulose structure to the binding system of tetrad pollen, and microspore rotation in Annona are unusual in the angiosperms.}, author = {Tsou, C. H. and Fu, Y. L.} } @article {5529, title = {The genus Goniothalamus (Annonaceae) in Sumatra}, journal = {Botanical Journal of the Linnean SocietyBotanical Journal of the Linnean Society}, volume = {139}, number = {3}, year = {2002}, month = {Jul}, pages = {225-254}, abstract = {A comprehensive taxonomic revision of the species of Goniothalamus (Blume) Hook. f. \& Thomson (Annonaceae) occurring in Sumatra and adjacent islands is presented for the first time. Fourteen species are recognized, including six endemics that are described as new to science (G. acehensis, G. alatus, G. dewildei, G. loerzingii, G. longistaminus and G. miquelianus). In addition, two species are newly recorded from Sumatra, viz. G. parallelivenius Ridl. (previously reported from Borneo), and G. wrayi King (previously reported from Peninsular Malaysia). The extensive nomenclatural confusion regarding the application of the names G. costulatus Miq. and G. opacus Bakh. f. is clarified: the names are shown to be synonymous, with the former having nomenclatural priority. The utility of specific taxonomic characters are also discussed, with particular emphasis on petal indumentum, staminal connective shape, ovary indumentum, stigma shape, monocarp size and shape, and seed indumentum. Biogeographical relationships in the genus are discussed, and the significance of the Barisan mountain range and the Quaternary volcanic tuffs around Lake Toba are highlighted as potential ecological barriers limiting dispersal. (C) 2002 The Linnean Society of London.}, keywords = {biogeography, classification, Indonesia, Malesia, new species, SYSTEMATICS, taxonomy}, author = {Saunders, R. M. K.} } @article {5447, title = {A new species of Annona (Annonaceae) from the northeastern Guayana Shield}, journal = {BrittoniaBrittonia}, volume = {54}, year = {2002}, note = {010}, pages = {136-140}, author = {Rainer, H.} } @book {5370, title = {Checklist of the Gymnosperms and flowering plants of central French Guiana}, year = {2002}, note = {007, 010, 030, 038, 041, 055, 071, 080, 133, 157, 167, 196, 206}, publisher = {[internal document sent to institutional libraries]}, organization = {[internal document sent to institutional libraries]}, chapter = {9-12}, author = {Mori, S. A. and C. Gracie and M. Hoff and T. Kirchgessner} } @article {5279, title = {Annonaceae. In: Mori, S.A., G. Cremers, C.A. Gracie, J.-J. de Granville, S.V. Heald, M. Hoff \& J.D. Mitchell (eds.) - Guide to the vascular plants of Central French Guiana 2: Dicotyledons}, journal = {Memoirs of the New York Botanical GardenMemoirs of the New York Botanical Garden}, volume = {76}, number = {2}, year = {2002}, note = {007, 010, 030, 038, 041, 055, 063, 071, 080, 133, 157, 167, 196, 206}, pages = {53-67, pl. 11-13}, author = {Maas, P. J. M. and Maas-van de Kamer, H.} } @article {5194, title = {Novitates Gabonensis 44. Uvaria annickiae, a name for a rare Uvaria species (Annonaceae) from Gabon}, journal = {BlumeaBlumea}, volume = {47}, year = {2002}, note = {198}, pages = {341-342}, author = {Jongkind, C. C. H.} }