Sokoloff, Dmitry D Impact of spatial constraints during seed germination on the evolution of angiosperm cotyledons: a case study from tropical Hydatellaceae (Nymphaeales). [electronic resource] - American journal of botany May 2013 - 824-43 p. digital Publication Type: Journal Article ISSN: 1537-2197 Standard No.: 10.3732/ajb.1200620 doi Subjects--Topical Terms: Biological EvolutionCotyledon--geneticsEcosystemGerminationMagnoliopsida--geneticsSeedlings--ultrastructureSeedsTropical Climate