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2 documents found tagged vulnerable [X]
  • Title
    Floral ecology and pollination in Eriolaena lushingtonii (Sterculiaceae), an endemic and threatened deciduous tree species of southern peninsular India
    Type
    Journal Article
    Description
    Eriolaena lushingtonii is an endemic and threatened medium-sized deciduous tree species. The flowering is very brief and occurs during the early wet season. The flowers are solitary, remain within the foliage and attract a few bee foragers only in the presence of nectariferous and polleniferous plants such as Holarrhena pubescens, Grewia tiliaefolia and Orthosiphon rubicundus which are common, exhibit gregarious flowering and attract a wide array of insects. In E. lushingtonii, the floral characteristics suggest entomophily but it is exclusively melittophilous involving Apis, Trigona and Xylocopa bees in the study area. The hermaphroditic flowers with the stigmatose style beyond the height of stamens and the sticky pollen grains do not facilitate autogamy but promote out-crossing. The study showed that pollinator limitation is responsible for the low fruit set but it is, however, compensated by multi-seeded fruits. Anther predation by a beetle also affects the reproductive success. Explosive fruit dehiscence and anemochory are special characteristics but these events are not effective during the wet season. The locals exploit the plant for treating snake bites, scorpion sting, making ropes and fuel wood. Therefore, the pollinator limitation, ineffective anemochory, seedling establishment problems and local uses largely contribute to the endemic and endangered status of E. lushingtonii.
    Attribution
    Solomon Raju A.J., VenkataRamana K., Hareesh Chandra P. (2013). Journal of Threatened Taxa 9(5) pp. 4359-4367; doi:10.11609/JoTT.o3168.4359-67
  • Title
    CEPF Western Ghats Special Series: On the occurrence of Memecylon clarkeanum Cogn. (Melastomataceae) - a vulnerable species from Nilgiris, Tamil Nadu, India
    Type
    Journal Article
    Description
    Memecylon clarkeanum Cogn., an endemic and vulnerable species collected from Devala, Nilgiri District. It is described and reported here as a new record for Tamil Nadu.
    Attribution
    Udhayavani C., Ramachandran V.S. (2013). Journal of Threatened Taxa 13(5) pp. 4811-4813; doi:10.11609/JoTT.o3638.4811-3