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A natural hybrid ofMonophyllaea (Gesneriaceae) in the tropical rain forests of West Sumatra

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Abstract

A natural hybrid (2n = 21) between the parapatric rain forest speciesMonophyllaea hirtella (2n = 20) andM. horsfieldii (2n = 22) (Gesneriaceae) has been observed at Sg. Lubuk Paraku, Padang, W. Sumatra. The hybrids showed intermediary characters between the parental species in the inflorescence structure, flower size and colour, indumentum, chromosome numbers, and habitat. The 29% pollen fertility of a single hybrid specimen suggests that the genetical isolation between the parental species may break down and reproduction over subsequent generations may occur.

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  1. Department of Biology, College of General Education, Osaka University, 560, Toyonaka, Osaka, Japan

    Hiroshi Okada

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  1. Hiroshi Okada
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Okada, H. A natural hybrid ofMonophyllaea (Gesneriaceae) in the tropical rain forests of West Sumatra. Pl Syst Evol 169, 55–63 (1990). https://doi.org/10.1007/BF00935984

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  • DOI: https://doi.org/10.1007/BF00935984

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