Freycinetia (pandanaceae) of Sumatra
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~ A H A R PASARIBU,
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Freyandn (Pandanaceae)of Snmatn, supentised
by SRI S. TJITROSOEDIRDJO, ALEX HARTANA, MIEN A WAZ,
ELIZABETIIAWIDJAJA
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Freychetia Gaud.. is one of the four extant genera of Pandanaceae. The
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3 g g ~ 5 @nus consists of approximately 200 species, in which b o a all are c~imbers.
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,, gjhe genus is distributed from Sri Lanka tbrough the mainland of South East Asia
9 g . rn0 r,,U ? @d Malesia floristic region to northern Australia ( Q u d a n d ) and New zealand,
8g 2,& 2 2Q B e r e it is the only member of Pandanaceae existed. The main diversity is within
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g cZ-2 &esia, particularly Borneo, the Philippines, and New Guiaea Despite its
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diversity in Malesia the diversity of the genus in Sumatra is less studied
Grnpare to neighbouring areas like the Malay Peninsula and Borneo.
The aim of this current study is to study the species diversity in Sumatra
@d adjacent islaads covering the morphological, anatomical, and ecological
apects in order to have a better understanding on the species delimitation and
&tributional patterns.
result of this present study recognises fourteen species existed in
in which four are proposed as new species, namely F. berbakensis
vidjaja, Pasaribu & Hidayat, F. dewiIdeonmr Pasariby F. k r e n r i s Pasariby
md F. scabrosa Pasaribu & Widjaja Twelve species are climbers, wheqeas two
@scrambling shrubs.
2
The r d t of phenetic analysis on morphological and anatomical data
suggests that there are three groups of species within the Sumatran species. The
coefficient similarity value is 0.58 and this means that the two groups have 58 %
morphological similarities. Freycfnetiakamiana, F. leuserensis,E ~ . m ,
F. imbri-,
E jawnic4, F. scandens, F. scnbrm, and F. rigicliyolia are grouped
in one chster with coefficient similarity of 0.65, whereas F. ~ ~ o l i a ,
F. berhkmis, E coqfkw, E F.cfistigmata, and and w i h b & z a are clustered in
another group with coefficient similarity of 0.66.
The resuhs of anatomical study and SEM indicate that qualitative data
arrangement of stomata, epidermal cells, palisade, and sponge tissue
6om transverse section) is relatively invariable within the fourteen
ies thus considered as more reliable as supporting data for species
@Limitation compare to quantitative data (such as s t 0 4 size, index, and
ency), which is more variable.
The r d of emlogical study indicates that species of Frejcinetia in
q m a t r a occupy various types of habitats. Nevertheless, they generally inhabit
b i d primary and secondary forsts ranging from 5 to 1950 m altitudes along the
&san Range. Most of the species are found on lowland at altitudes below f OOO
@th a
d rainfall ranging from 20-2500 to 4 5 0 0 - 5 0 mm per year.
and
eycinetia angustifolia, F. i m b r i m F. javanica, F. rigidijiolia, F. &m
sunmtrma are species that occupied wide ranges of habims. There are at least
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8
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QcPrs
~ A H A R PASARIBU,
A
Freyandn (Pandanaceae)of Snmatn, supentised
by SRI S. TJITROSOEDIRDJO, ALEX HARTANA, MIEN A WAZ,
ELIZABETIIAWIDJAJA
Q
9gf45
Freychetia Gaud.. is one of the four extant genera of Pandanaceae. The
;g~e"
3 g g ~ 5 @nus consists of approximately 200 species, in which b o a all are c~imbers.
W!ZSR
s-0
,, gjhe genus is distributed from Sri Lanka tbrough the mainland of South East Asia
9 g . rn0 r,,U ? @d Malesia floristic region to northern Australia ( Q u d a n d ) and New zealand,
8g 2,& 2 2Q B e r e it is the only member of Pandanaceae existed. The main diversity is within
Q
c
g cZ-2 &esia, particularly Borneo, the Philippines, and New Guiaea Despite its
,.
S
Q *
P
8.8; s
16
Eigkk;
S .
=.Q
p
93
5g
$g 8$
C
9%
zf9
J.
Y Q
-
$
3:
E9
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5 ,
8s
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c
$
g
=
.
r
8s
=.
2.
e
9
E
$
3
B
E
7
&ng
diversity in Malesia the diversity of the genus in Sumatra is less studied
Grnpare to neighbouring areas like the Malay Peninsula and Borneo.
The aim of this current study is to study the species diversity in Sumatra
@d adjacent islaads covering the morphological, anatomical, and ecological
apects in order to have a better understanding on the species delimitation and
&tributional patterns.
result of this present study recognises fourteen species existed in
in which four are proposed as new species, namely F. berbakensis
vidjaja, Pasaribu & Hidayat, F. dewiIdeonmr Pasariby F. k r e n r i s Pasariby
md F. scabrosa Pasaribu & Widjaja Twelve species are climbers, wheqeas two
@scrambling shrubs.
2
The r d t of phenetic analysis on morphological and anatomical data
suggests that there are three groups of species within the Sumatran species. The
coefficient similarity value is 0.58 and this means that the two groups have 58 %
morphological similarities. Freycfnetiakamiana, F. leuserensis,E ~ . m ,
F. imbri-,
E jawnic4, F. scandens, F. scnbrm, and F. rigicliyolia are grouped
in one chster with coefficient similarity of 0.65, whereas F. ~ ~ o l i a ,
F. berhkmis, E coqfkw, E F.cfistigmata, and and w i h b & z a are clustered in
another group with coefficient similarity of 0.66.
The resuhs of anatomical study and SEM indicate that qualitative data
arrangement of stomata, epidermal cells, palisade, and sponge tissue
6om transverse section) is relatively invariable within the fourteen
ies thus considered as more reliable as supporting data for species
@Limitation compare to quantitative data (such as s t 0 4 size, index, and
ency), which is more variable.
The r d of emlogical study indicates that species of Frejcinetia in
q m a t r a occupy various types of habitats. Nevertheless, they generally inhabit
b i d primary and secondary forsts ranging from 5 to 1950 m altitudes along the
&san Range. Most of the species are found on lowland at altitudes below f OOO
@th a
d rainfall ranging from 20-2500 to 4 5 0 0 - 5 0 mm per year.
and
eycinetia angustifolia, F. i m b r i m F. javanica, F. rigidijiolia, F. &m
sunmtrma are species that occupied wide ranges of habims. There are at least
BC
3
7'
3
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