Two new species of Dendrobium Sect. Calcarifera (Orchidaceae) from Terengganu, Peninsular Malaysia
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Abstract:
Two new species, Dendrobium ainiae R. Go et E. E. Besi and Dendrobium ruseae E. E. Besi et Dome belonging to Sect. Calcarifera are described and illustrated from Terengganu, Peninsular Malaysia. These species are so far known from a population in lowland dipterocarp forest. A field key to the Peninsular Malaysian taxa of Dendrobium Sect. Calcarifera including Dendrobium chewiorum is also provided.Keywords:
Dendrobium
Orchidaceae
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Orchidaceae
Dendrobium
Sect
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Distribution of Rafflesia spesies are only endemic to tropical rainforest in Southeast Asia. Malaysia is among the country that is blessed with Rafflesia species and reported can be found in Peninsular Malaysia, Sabah and Sarawak. Not all state in Peninsular Malaysia are reported to have this magnificent flower. Only states of Perak, Pahang, Kelantan, Terengganu and Kedah that are reported to have the distribution of Rafflesia species in Peninsular Malaysia. There are seven species of Rafflesia that have been reported and daescribed in Peninsular Malaysia, which namely R. cantleyi, R. kerrii, R. azlanii, R. su-meiae, R. sharifah-hapsahiae, R. parvimaculata and R. tuanku-halimii.
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Two new taxa of Globba (Zingiberaceae), were recently discovered from Terengganu, Peninsular Malaysia Globba tembatensis Y.Y. Sam & Julius and Globba unifolia var. terengganuensis Y.Y. Sam & Ummul-Nazrah are described and illustrated here.
Zingiberaceae
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Zingiberaceae
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Gesneriaceae
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Dendrobium chiangdaoense, a new species belonging to Dendrobium section Stachyobium is described and illustrated. It is only known from the type locality in mixed deciduous forest at ca. 800 m elev. on limestone hills in Chiang Dao District, Chiang Mai Province, northern Thailand. It most closely resembles D. dixonianum, a more widespread northern Thailand species occurring in upper montane rain forest at 1,650–1,800 m elev.
Dendrobium
Orchidaceae
Chiang mai
Type locality
Cloud forest
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A narrow endemic new species of Dendrobium sect. Stachyobium from Thailand (Orchidaceae: Malaxideae)
A new species belonging to Dendrobium section Stachyobium was discovered in mixed deciduous forest near the Check Point to Thi Lo Su Waterfall, Umphang District, Tak Province, in the northern Thailand. A description (including leaf anatomy), illustration and comparison with the closely related species D. incurvum are provided here.
Orchidaceae
Dendrobium
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Gesneriaceae
Subspecies
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Two new species of the mycoheterotrophic genus Thismia Griff. (Thismiaceae), Thismiadomei Siti-Munirah and T.terengganuensis Siti-Munirah from Peninsular Malaysia, are described and illustrated. Thismiadomei, characterized by its perianth lobes that are upright and curve inward, but are imperfectly connate, falls within sectionOdoardoa. Thismiaterengganuensis is characterized by its mitre with three appendages on its apex, so falls within sectionGeomitra. Both new species are unique and totally different from other described species, T.domei by the trichomes on its outer perianth tube surface and T.terengganuensis by its mitre with slender appendages. Thismiajavanica J.J.Sm, also from Terengganu, is a new record for Peninsular Malaysia.
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Appendage
Trichome
Apex (geometry)
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