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References References References Abrahamson WG, Gadgil M (1973) Growth form and reproductive effort in goldenrods (Solida­ go,go,Asteraceae). Asteraceae). Am Nat 107:651-661 Abramsky Z (1983) Experiments on seed predation by rodents and ants in the Israeli desert. Oecologia 57:328-332 Agharkar SP (1920) DberÜber die Verbreitungsmittel der Xerophyten, Subxerophyten und Halophy­ ten des Nordwestlichen Indiens und ihre Herkunft. Bot Jahrb 56, Beiblatt 24:1-41 AlienAllen EB (1991) Temporal and spatial organization of desert plant communities. In: Skuijns J (ed) Semiarid lands and deserts: soil resource and reclamation. Dekker, New York, pp 193-208 Andersen M (1991) Mechanistic models for the seed shadows ofwind-dispersedof wind-dispersed plants.Amplants. Am Nat 137:476-497 Andersen M (1992) An analysis of variability in seed settling velocities of several wind-dispers­ ed Asteraceae. 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New PhytolPhytoI78:681-694 78:681-694 Beneke K, Von TeichmanTeiehman I, Van Rooyen MW, Theron GK (1992a) Fruit polymorphism in ephe­ meral species of Namaqualand: I. AnatomicalAnatomieal differencesdifferenees between polymorphicpolymorphie diaspores of two DimorphothecaDimorphotheea species. S Afr J Bot 58:448-455 Beneke K, Von Teichman I, Van Rooyen MW, Theron GK (1992b) Fruit polymorphism in ephe­ meral species of Namaqualand: Il.H. AnatomiealAnatomical differencesdifferenees between polymorphicpolymorphie diaspores of ArctotisAretotis fastuosa and Ursinia eakilefolia.cakilefolia. S Afr J Bot 58:456-460 Beneke K, Van Rooyen MW, Theron GK (1992c)(1992e) Fruit polymorphism in ephemeral species of Namaqualand: V. IntramorphicIntramorphie eompetitioncompetition among plants eultivatedcultivated from dimorphicdimorphie dia­ spores. S Afr J Bot 58:461-468 Beneke K, Van Rooyen MW, Theron GK (1992d) Fruit polymorphism in ephemeral speciesspeeies of Namaqualand: VI. IntermorphicIntermorphie eompetitioncompetition among plants cultivatedeultivated from dimorphicdimorphie di­ aspores. S Afr J Bot 58:469-477 Beneke K, Van Rooyen MW, Theron GK, Van de Venter HA (1993a) Fruit polymorphism in ephemeral species of Namaqualand: Ill.III. Germination differencesdifferenees between the polymorpicpolymorpie diaspores. J Arid Environ 24:333-344 Beneke K, Van Rooyen MW, Theron GK (1993b) Fruit polymorphism in ephemeral speciesspeeies of Namaqualand: IV. Growth-analyses of plants eultivatedcultivated from the dimorphicdimorphie diaspores. J Arid Environ 24:345-360 Beneke K, Van Rooyen MW, Theron GK (1993c)(1993e) Fruit polymorphism in ephemeral species of Namaqualand: VII. Diaspore productionproduetion of plants eultivatedcultivated from dimorphicdimorphie diaspores. J Arid Environ 25:233-247 Berg RY (1975) Myrmecochorous plantsp1ants in Australia and their dispersal by ants. 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