A JOURNAL ON TAXONOMIC BOTANY
PLANT SOCIOLOGY AND ECOLOGY

REINWARDTIA

Editors
SOEDARSONO RISWAN

MIEN A RIFAI
ELIZABETH A. WIDJAJA

Published by
HERBARIUM BOGORIENSE

BALAI PENELITIAN DAN PENGEMBANGAN BOTANI
PUSAT PENELITIAN DAN PENGEMBANGAN BIOLOGI — LIPI

BOGOR, INDONESIA

Reinwardtia Vol. 11, Part 1, 1 - 55 5 February 1992

IO ISSN 0034 - 365 X



REINWARDTIA

Vol. 11, Part l , p p . 33 (1992)

REINSTATEMENT OF PTEROCARPUS ECHINATA PERS.
(LEGUMINOSAE-PAPILIONACEAE)

AJ.G.H. KOSTERMANS

Herbarium Bogoriense, Bogor, Indonesia

ABSTRACT

New evidences are put forward to Pterocarpus echinata from Ptero-
carpus indicus

ABSTRAK

Beberapa bukti-bukti baru dikemukakan untuk Pterocarpus echinata
yang berasal dari Pterocarpus indicus.

Pterocarpus echinata Persoon, Syn. PI. 2 (1807) 277, was reduced to
a variety of P. indicus by J.P. Rojo in 1972 (Phanerogam. Monograph. 5: 46.
J. Gramer, Lehre). According to Rojo, it differs from P. indicus mainly by
stiff bristles on the fruit wing and prickles on the seed bearing part. Stout
hairs are also present on the ovary.

I have collected the tree several times in Sumbawa and could study it
more intensively in the dry western part of Flores, where it is a common
and often dominant part of the monsoon forest. Comparison with the true
P. indicus revealed, that the trees are different, much smaller with smaller
buttresses. The leaves have a smaller, not so much pronounced acumen as
those of P. indicus, the veins are more obscure.

Compared with the ways the other species of Pterocarpus are recognised,
I think that P. echinata is a distinct species, occuring in a different geographi-
cal part of Malesia in areas with a pronounced dry season. C. Evrard has
already reainstated the African species P. teijsmannii Harms (Bull. Jard. Bot.
Belgique 58 (1988) 448—455), because of some errors in Rojo's description.

33



CONTENTS

Page

ROCHADI ABDULHADI Seed banks in a sub-tropical rain forest 1

ROCHADI ABDULHADI Floristic changes in a sub-tropical rain forest
succession 13

A.J.G.H. KOSTERMANS Two remarkable Lindera species (Lauraceae)
probably representing an undescribed genus 23

A.J.G.H. KOSTERMANS A new species of Diplodiscus Turcz. (Tiliaceae)
related to Brownlowia Roxb 27

N. SASIDHARAN & K. SWARUPANANDAN A new species of Cassine
(Celastraceae) from India , 29

A.J.G.H. KOSTERMANS Reinstatement of Pterocarpus echinata Pers.
(Leguminosae — Papilionaceae) ., 33

JUMAAT H ADAM & GC. WlLCOCK. A new natural hybrid of Nepenthes
from Mt. Kinabalu (Sabah) 35

A.J.G.H. KOSTERMANS Durio macrantha Kosterm. species nova (Bom-
bacaceae) from North Sumatra 41

A.J.G.H. KOSTERMANS Salacia acuminatissima Kosterm., spec. nov.
(Celastraceae) from Sri Lanka 53

A.J.G.H. KOSTERMANS Identity of Dracontomelum petelotii Tardleu
-Blot (Anacard.) 55

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