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Elizabeth A. widjaja, Elizabeth A.
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EXPERIMENTAL TAXONOMY OF THE GIGANTOCHLOA ATTER-GIGANTOCHLOA PSEUDOARUNDINACEA COMPLEX widjaja, Elizabeth A.; Lester, R.N.
REINWARDTIA Vol 10, No 3 (1987): vol. 10 No.3
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (444.827 KB) | DOI: 10.14203/reinwardtia.v10i3.273

Abstract

Gigantochloa pseudoarundinacea, G. robusta, G. atter, G. atroviola-cea and 14 other related Malesian species of bamboos were studied from preserved and living materials. Characters discerned by morphology, anatomy, chromatography and electrophoresis were analysed by numerical taxonomy. Most of the data indicated that the four species named above were distinct although closely related. The relationships of the remaining species were more complex, but the integrity of each species was established.
A REVISION OF MALESIAN GIGANTOCHLOA (POACEAE - BAMBUSOIDEAE) widjaja, Elizabeth A.
REINWARDTIA Vol 10, No 3 (1987): vol. 10 No.3
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4443.298 KB) | DOI: 10.14203/reinwardtia.v10i3.274

Abstract

Eighteen species of Gigantochloa are recognized from the Malesian area, of which ten species are wild and the rest are known only in cultivation. Besides morphological and anatomical evidences, data derived from chemotaxonomical analyses are also utilized in the systematic study of these species. A new combination (G. pseudoarundinacea) and four new species (G. achmadii, G. atroviolacea, G. manggong and G. pruriens) are proposed. Moreover a doubtful species (G. heteroclada) is also mentioned. Full illustrated descriptions, complete list of synonymy and typification aa well as sundry notes for each species treated are presented. Keys to all species and varieties recognized (based on the inflorescence and vegetative characters) are given and an index of all specimens examined is also appended.
Notes on Freycinetia (Pandanaceae) from Jambi, Sumatra with the description of a new species Pasaribu, Nursahara; Widjaja, Elizabeth A.
REINWARDTIA Vol 13, No 1 (2009): Vol. 13 No. 1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (567 KB) | DOI: 10.14203/reinwardtia.v13i1.12

Abstract

Nine species of Freycinetia are enumerated for Jambi, Sumatra, Indonesia: F. angustifolia Blume, F. berbakensis Widjaja, Pasaribu & Hidayat, F. imbricata Blume, F. javanica Blume, F. kamiana B.C. Stone, F. rigidifolia Hemsl., F. sumatrana Hemsl., F. winkleriana Martelli and F. scabrosa Pasaribu & Widjaja,. The latest species is newly described. A key to the nine species in Jambi is provided.
MORPHOLOGICAL, ANATOMICAL AND CHEMICAL ANALYSES OF AMORPHOPHALLUS PAEONIIFOLIUS AND RELATED TAXA Widjaja, Elizabeth A.; LESTER, R.N.
REINWARDTIA Vol 10, No 3 (1987): vol. 10 No.3
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (487.046 KB) | DOI: 10.14203/reinwardtia.v10i3.272

Abstract

A study on the affinity of undescribed taxa of Amorphophallus with A. paeoniifolius and its related species was undertaken using numerical analyses of data derived from preserved and living specimens. The results obtained were compared with the system of classification produced by classical taxonomic methods. The Javanese wild and cultivated forms of Amorphophallus paeoniifolius respectively known locally as "Amorphophallus campanulatus f. hortensis" and "Amorphophallus campanulatus f. sylves-tris" were confirmed as two distinct but closely related taxa.
A NEW SPECIES OF SCHIZOSTACHYUM (POACEAE: BAMBUSOIDEAE) FROM SUMBA ISLAND, INDONESIA DAMAYANTO, I PUTU GEDE P.; WIDJAJA, ELIZABETH A.
REINWARDTIA Vol 15, No 2 (2016): Vol.15 No.2
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (980.293 KB) | DOI: 10.14203/reinwardtia.v15i2.2946

Abstract

DAMAYANTO, I P. G. P. & WIDJAJA, E. A. 2016. A new species o Schizostachyum (Poaceae: Bambusoideae) from Sumba Island, Indonesia. Reinwardtia 15(2): 119 – 122. — Schizostachyum purpureum Damayanto & Widjaja is a new species from Sumba Island. Its description and illustration are presented.
NOMENCLATURAL STUDY OF TETRASTIGMA LEUCOSTAPHYLUM AND TETRASTIGMA RAFFLESIAE (VITACEAE): TWO COMMON HOSTS OF RAFFLESIA IN SUMATRA Rahayu, Yeni; Chikamawati, Tatik; Widjaja, Elizabeth A.
REINWARDTIA Vol 17, No 1 (2018): Vol.17 No.1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (822.368 KB) | DOI: 10.14203/reinwardtia.v17i1.3552

Abstract

RAHAYU, Y., CHIKMAWATI, T. & WIDJAJA, E. A. 2018. Nomenclatural study of Tetrastigma leucostaphylum and Tetrastigma rafflesiae (Vitaceae): two common hosts of Rafflesia in Sumatra. Reinwardtia 17(1): 59–66. – A study of Tetrastigma (Miq.) Planch. (Vitaceae) conducted in Sumatra has revealed a number of species records. There are two species were misinterpreted. Two species names are here discussed: T. leucostaphylum (Dennst.) Alston ex Mabb. and T. rafflesiae (Miq.) Planch., which formerly united with T. lanceolarium. 
Co-Authors Chikamawati, Tatik I PUTU GEDE P. DAMAYANTO, I PUTU GEDE P. Nursahara Pasaribu R.N. Lester, R.N. Yeni Rahayu