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All Journal REINWARDTIA Reinwardtia
Wong Khoon Meng
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Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology

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FLORA OF SINGAPORE PRECURSORS, 2. A NEW SPECIES AND TWO NEW COMBINATIONS IN PSYDRAX (RUBIACEAE: VANGUERIEAE) FOR WEST MALESIA Wong Khoon Meng; Ridha Mahyuni
Reinwardtia Vol. 17 No. 1 (2018)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v17i1.3562

Abstract

WONG, K. M. & MAHYUNI, R. 2018. Flora of Singapore Precursors, 2. A new species and two new combinations in Psydrax (Rubiaceae: Vanguerieae) for West Malesia. Reinwardtia 17(1): 77–84. — Studies in Psydrax Gaertn. for the Flora of Singapore and the Malesian floristic region have revealed that three taxa required the description of a new species and two new combinations. Psydrax undulatifolius K.M.Wong & Mahyuni is newly described as a species thus far recorded only for the Malay Peninsula, whereas Psydrax approximatus (Korth.) Mahyuni & K.M.Wong and Psydrax lucidulus (Miq.) Mahyuni & K.M.Wong are newly combined from Canthium approximatum Korth. and Vangueria lucidula Miq., both distributed in Sumatra, the Malay Peninsula and Borneo.
FLORA OF SINGAPORE PRECURSORS, 8. SYSTEMATY OF THE NEW SOUTHEAST ASIAN GENERA CANTHIUMERA AND DIBRIDSONIA (RUBIACEAE: VANGUERIEAE), WITH NOTES ON PLANT ARCHITECTURE AND REPRODUCTIVE ECOLOGY Wong Khoon Meng; Ridha Mahyuni; Xin Yi Ng; Louise Neo
Reinwardtia Vol. 17 No. 2 (2018)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v17i2.3648

Abstract

WONG, K. M., MAHYUNI, R., NG, X. Y. & NEO, L. 2018. Flora of Singapore Precursors, 8. Systematy of the new Southeast Asian genera Canthiumera and Dibridsonia (Rubiaceae: Vanguerieae), with notes on plant architecture and reproductive ecology. Reinwardtia 17(2): 101–124. — The recognition of a number of distinct genera by morphological and molecular phylogenetic attributes from the Canthium s.l. complex still leaves a core group of morphologically disparate taxa. The distinguishing features of the spiny Canthium s.s. and two groups of non-spinescent Southeast Asian tree taxa still commonly identified with C. glabrum Blume and C. confertum Korth. are assessed against those of Cyclophyllum Hook.f., Bullockia (Bridson) Razafim., Lantz & B.Bremer, Kanapia Arriola & Alejandro, Keetia E.Phillips, Perakanthus Robyns ex Ridl., Psydrax Gaertn., and Pyrostria Comm. ex Juss., similarly arborescent genera that have been so distinguished through recent studies. Canthium glabrum and C. confer-tum are, respectively, the bases of the genera Canthiumera K.M.Wong & Mahyuni and Dibridsonia K.M.Wong newly described here. The new species Canthiumera robusta K.M.Wong & X.Y.Ng is described; new nomenclatural combi-nations include C. glabra (Blume) K.M.Wong & Mahyuni, C. neilgherrensis (Wight) K.M.Wong, C. neilgherrensis var. chartacea (Gamble) K.M.Wong, C. siamensis (K.Schum.) K.M.Wong, Dibridsonia conferta (Korth.) K.M.Wong, D. culionensis (Elm.) K.M.Wong, and D. oblongifolia (Quisumb. & Merr.) K.M.Wong. Canthium glabrum var. pedun-culatum Pitard, Plectronia neilgherrensis var. chartacea Gamble and Canthium confertum Korth. are lectotypified. Plectronia viridis Merr. and P. leytensis Merr. are reduced to synonymy under Dibridsonia conferta. Notes on the tree architecture, dispersal ecology and germination of Canthiumera and Dibridsonia are provided.
FLORA OF SINGAPORE PRECURSORS, 2. A NEW SPECIES AND TWO NEW COMBINATIONS IN PSYDRAX (RUBIACEAE: VANGUERIEAE) FOR WEST MALESIA Wong Khoon Meng; Ridha Mahyuni
Reinwardtia Vol. 17 No. 1 (2018)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v17i1.3562

Abstract

WONG, K. M. & MAHYUNI, R. 2018. Flora of Singapore Precursors, 2. A new species and two new combinations in Psydrax (Rubiaceae: Vanguerieae) for West Malesia. Reinwardtia 17(1): 77–84. — Studies in Psydrax Gaertn. for the Flora of Singapore and the Malesian floristic region have revealed that three taxa required the description of a new species and two new combinations. Psydrax undulatifolius K.M.Wong & Mahyuni is newly described as a species thus far recorded only for the Malay Peninsula, whereas Psydrax approximatus (Korth.) Mahyuni & K.M.Wong and Psydrax lucidulus (Miq.) Mahyuni & K.M.Wong are newly combined from Canthium approximatum Korth. and Vangueria lucidula Miq., both distributed in Sumatra, the Malay Peninsula and Borneo.
FLORA OF SINGAPORE PRECURSORS, 8. SYSTEMATY OF THE NEW SOUTHEAST ASIAN GENERA CANTHIUMERA AND DIBRIDSONIA (RUBIACEAE: VANGUERIEAE), WITH NOTES ON PLANT ARCHITECTURE AND REPRODUCTIVE ECOLOGY Wong Khoon Meng; Ridha Mahyuni; Xin Yi Ng; Louise Neo
Reinwardtia Vol. 17 No. 2 (2018)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v17i2.3648

Abstract

WONG, K. M., MAHYUNI, R., NG, X. Y. & NEO, L. 2018. Flora of Singapore Precursors, 8. Systematy of the new Southeast Asian genera Canthiumera and Dibridsonia (Rubiaceae: Vanguerieae), with notes on plant architecture and reproductive ecology. Reinwardtia 17(2): 101–124. — The recognition of a number of distinct genera by morphological and molecular phylogenetic attributes from the Canthium s.l. complex still leaves a core group of morphologically disparate taxa. The distinguishing features of the spiny Canthium s.s. and two groups of non-spinescent Southeast Asian tree taxa still commonly identified with C. glabrum Blume and C. confertum Korth. are assessed against those of Cyclophyllum Hook.f., Bullockia (Bridson) Razafim., Lantz & B.Bremer, Kanapia Arriola & Alejandro, Keetia E.Phillips, Perakanthus Robyns ex Ridl., Psydrax Gaertn., and Pyrostria Comm. ex Juss., similarly arborescent genera that have been so distinguished through recent studies. Canthium glabrum and C. confer-tum are, respectively, the bases of the genera Canthiumera K.M.Wong & Mahyuni and Dibridsonia K.M.Wong newly described here. The new species Canthiumera robusta K.M.Wong & X.Y.Ng is described; new nomenclatural combi-nations include C. glabra (Blume) K.M.Wong & Mahyuni, C. neilgherrensis (Wight) K.M.Wong, C. neilgherrensis var. chartacea (Gamble) K.M.Wong, C. siamensis (K.Schum.) K.M.Wong, Dibridsonia conferta (Korth.) K.M.Wong, D. culionensis (Elm.) K.M.Wong, and D. oblongifolia (Quisumb. & Merr.) K.M.Wong. Canthium glabrum var. pedun-culatum Pitard, Plectronia neilgherrensis var. chartacea Gamble and Canthium confertum Korth. are lectotypified. Plectronia viridis Merr. and P. leytensis Merr. are reduced to synonymy under Dibridsonia conferta. Notes on the tree architecture, dispersal ecology and germination of Canthiumera and Dibridsonia are provided.
Co-Authors Louise Neo Ridha Mahyuni Xin Yi Ng