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All Journal REINWARDTIA Reinwardtia
Ridha Mahyuni
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Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology

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A NEW VARIETY OF CANTHIUMERA GLABRA (RUBIACEAE: VANGUERIEAE) Ridha Mahyuni; Tatik Chikmawati; Nunik Sri Ariyanti; Anne Kusumawaty
Reinwardtia Vol. 21 No. 1 (2022)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v21i1.4268

Abstract

MAHYUNI, R., CHIKMAWATI, T., ARIYANTI, N. S. & KUSUMAWATY, A. 2022. A new variety of Canthiumera glabra (Rubiaceae: Vanguerieae). Reinwardtia 21(1): 13‒17. — Canthiumera glabra var. laxiflora (Rubiaceae: Vanguerieae), a new variety from Java and Sumatra is described. The new variety differs from the typical variety in having laxly branched inflorescences and is restricted to south Sumatra (Lampung) and southwestern Java.
A NEW VARIETY OF CANTHIUMERA GLABRA (RUBIACEAE: VANGUERIEAE) Ridha Mahyuni; Tatik Chikmawati; Nunik Sri Ariyanti; Anne Kusumawaty
Reinwardtia Vol. 21 No. 1 (2022)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v21i1.4268

Abstract

MAHYUNI, R., CHIKMAWATI, T., ARIYANTI, N. S. & KUSUMAWATY, A. 2022. A new variety of Canthiumera glabra (Rubiaceae: Vanguerieae). Reinwardtia 21(1): 13‒17. — Canthiumera glabra var. laxiflora (Rubiaceae: Vanguerieae), a new variety from Java and Sumatra is described. The new variety differs from the typical variety in having laxly branched inflorescences and is restricted to south Sumatra (Lampung) and southwestern Java.
NOTES ON RAFFLESIA (RAFFLESIACEAE) IN SUMATRA WITH A NEW RECORD RAFFLESIA GADUTENSIS MEIJER RIDHA MAHYUNI; YAYAN WAHYU C. KUSUMA; WIHERMANTO WIHERMANTO; J. F. VELDKAMP
Reinwardtia Vol. 14 No. 2 (2015)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v14i2.1678

Abstract

MAHYUNI, R., KUSUMA,Y. W. C., WIHERMANTO & VELDKAMP, J. F. 2015. Notes on Rafflesia (Rafflesiaceae) in Sumatra with a new record Rafflesia gadutensis Meijer. Reinwardtia 14(2): 317 - 322. Pulau Mursala is a small island west of the Sibolga, Tapanuli Tengah District, North Sumatra, Indonesia. The occurrence of the genus Rafflesia (Rafflesiaceae) there has never been reported before. However, during a visit in April 2013 three populations are located close together with more than twenty buds and some rotting blooming flowers, Tetrastigma sp. was detected. Field observations could be made and material was collected for comparison with that in the Herbarium Bogoriense (BO). It was concluded that they are R.gadutensis Meijer, which is known from Padang, Ulu Gadut. Notes on its morphology are given. The distribution of species is discussed.
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.
NOTES ON RAFFLESIA (RAFFLESIACEAE) IN SUMATRA WITH A NEW RECORD RAFFLESIA GADUTENSIS MEIJER RIDHA MAHYUNI; YAYAN WAHYU C. KUSUMA; WIHERMANTO WIHERMANTO; J. F. VELDKAMP
Reinwardtia Vol. 14 No. 2 (2015)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v14i2.1678

Abstract

MAHYUNI, R., KUSUMA,Y. W. C., WIHERMANTO & VELDKAMP, J. F. 2015. Notes on Rafflesia (Rafflesiaceae) in Sumatra with a new record Rafflesia gadutensis Meijer. Reinwardtia 14(2): 317 - 322. Pulau Mursala is a small island west of the Sibolga, Tapanuli Tengah District, North Sumatra, Indonesia. The occurrence of the genus Rafflesia (Rafflesiaceae) there has never been reported before. However, during a visit in April 2013 three populations are located close together with more than twenty buds and some rotting blooming flowers, Tetrastigma sp. was detected. Field observations could be made and material was collected for comparison with that in the Herbarium Bogoriense (BO). It was concluded that they are R.gadutensis Meijer, which is known from Padang, Ulu Gadut. Notes on its morphology are given. The distribution of species is discussed.
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.
RAFFLESIA LAWANGENSIS (RAFFLESIACEAE), A NEW SPECIES FROM BUKIT LAWANG, GUNUNG LEUSER NATIONAL PARK, NORTH SUMATRA, INDONESIA K. MAT -SALLEH; RIDHA MAHYUNI; AGUS SUSATYA
Reinwardtia Vol. 13 No. 2 (2010)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

MAT-SALLEH, K., MAHYUNI, R., SUSATYA, A. & VELDKAMP, J. F. 2010. Rafflesia lawangensis (Rafflesiaceae), a new species from Bukit Lawang, Gunung Leuser National Park, North Sumatra, Indonesia. Reinwardtia 13(2): 159-165. - Rafflesia lawangensis (Rafflesiaceae), a new species from Bukit Lawang, Gunung Leuser National Park, North Sumatra is described. The species was previously recorded as either R. arnoldi or R. atjehensis, but it is distinguished by the absence of windows, the large undulating exterior annulus, the short pubescence on the upper surface of perigone lobes, and the very wide of diaphragm opening. A key to species of Sumatran Raffesia is provided.
RAFFLESIA LAWANGENSIS (RAFFLESIACEAE), A NEW SPECIES FROM BUKIT LAWANG, GUNUNG LEUSER NATIONAL PARK, NORTH SUMATRA, INDONESIA K. MAT -SALLEH; RIDHA MAHYUNI; AGUS SUSATYA
Reinwardtia Vol. 13 No. 2 (2010)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

MAT-SALLEH, K., MAHYUNI, R., SUSATYA, A. & VELDKAMP, J. F. 2010. Rafflesia lawangensis (Rafflesiaceae), a new species from Bukit Lawang, Gunung Leuser National Park, North Sumatra, Indonesia. Reinwardtia 13(2): 159-165. - Rafflesia lawangensis (Rafflesiaceae), a new species from Bukit Lawang, Gunung Leuser National Park, North Sumatra is described. The species was previously recorded as either R. arnoldi or R. atjehensis, but it is distinguished by the absence of windows, the large undulating exterior annulus, the short pubescence on the upper surface of perigone lobes, and the very wide of diaphragm opening. A key to species of Sumatran Raffesia is provided.
Co-Authors AGUS SUSATYA Anne Kusumawaty J. F. Veldkamp K. MAT -SALLEH Louise Neo NUNIK SRI ARIYANTI TATIK CHIKMAWATI WIHERMANTO WIHERMANTO Wong Khoon Meng Xin Yi Ng Yayan Wahyu C. Kusuma