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Population genetic structure, phylogeography, and demographic history of Platycrater arguta (Hydrangeaceae) endemic to East China and South Japan, inferred from chloroplast DNA sequence variation.
A survey of chloroplast DNA sequence variation within and among twelve populations representing the overall distributional range of the Sino-Japanese floristic region endorsed the recognition of two 'evolutionarily significant units' within P. arguta, corresponding to var.
Heterostyly and the possibility of its breakdown by polyploidization
It appears reasonable that the first step of the breakdown of heterostyly was the recombination of the supergene in a diploid heterostylous plant, and then poyploidization incidentally occurred.
Pollination system and evolution of dioecy from distyly in Mussaenda parviflora (Rubiaceae)
The floral morphology and reproductive ecology of a scandent shrub species, Mussaenda parviflora Miq. (Rubiaceae), were studied on Iriomote and Amami Ohshima Islands, Japan. The morphological study
Correlation between distyly and ploidy level in Damnacanthus (Rubiaceae).
Based on the present chromosome number study, the taxonomy of the varieties of D. indicus should be revised and a strong correlation exists between chromosome number and occurrence of distyly.
Karyotypic analysis of Skimmia japonica (Rutaceae) and related species
A karyotypic analysis of three species of Skimmia (Rutaceae) in East Asia was performed that examined 88 individuals from 53 localities, finding that the first pair was sometimes rather heteromorphic; however, the heteromorphism was not related to sex of the plant.
Morphological variation in leaf domatia enables coexistence of antagonistic mites in Cinnamomum camphora
Canonical discriminant analysis revealed that domatium morphology could be classified into four different types, and domatia with narrower openings tended to occur in or near the position between the midrib and basal secondary veins in Cinnamomum camphora.
Distyly and pollen dimorphism in Damnacanthus (Rubiaceae)
It is concluded that Damnacanthus should be revised as a stenopalynous genus because the number of colpi is useful for delimiting taxa and because granulate pollen grains are found only in thrum flowers.
Lecanorchis sarawakensis (Orchidaceae, Vanilloideae), a new mycoheterotrophic species from Sarawak, Borneo
Lecanorchis Blume (1856: 188) comprises about 30 species of mycoheterotrophic orchids characterized by having numerous, long, thick, horizontal roots produced from a short rhizome.
Glycosmis suberosa (Rutaceae), a new species from Khao Luang National Park, Peninsular Thailand
A new species, Glycosmis suberosa H.Toyama & Rueangr. is described from Khao Luang National Park, Nakhon Si Thammarat Province, Thailand. This species is distinguished from the other Glycosmis