Download Fig. 1. ly branching, mat-forming, apart, cylindrical to slightly clavate

BLUMEA
Two
34
167-172
(1989)
new
of Mediocalcar (Orchidaceae)
species
from
Guinea
New
A. Schuiteman
Rijksherbarium, Leiden,
The Netherlands
INTRODUCTION
Since the establishment of Mediocalcar
varieties have been described in this genus.
acters, which lack
in progress
the
at
diagnostic
nized, but much work remains
became
apparent
common
that
throughout
from all other
be
can
species
J.J. Smith in
of these
value for distinction
Rijksherbarium suggests
remarkable genus
by
Many
to
two
distinct
the
highlands
species
the
still
are
a
they
can
of these
easily
They
be
and 3
species
on
trivial char-
should be recog-
classification of this
investigations
of which
undescribed,
of New Guinea.
of the genus and
species
satisfactory
course
51
based
level. Revisional work
species
that less than 15
be done before
produced. During
at
1900,
are
are
one
strikingly
recognized by
it
is
soon
fairly
different
their
vegeta-
tive characters alone.
DESCRIPTIONS
Mediocalcar
decoratum Schuiteman,
congeneribus pseudobulbis
A
culato, calcari profunde
material
K), Papua
Mediocalcar
R.T. Northen
Roots
c.
saccato
New
spec.;
A.B.
mm
slightly clavate,
nate
to
the
thick,
long,
nose.
by
2-4
'Miniature
densely
mm
Young
c.
1
one
wide;
shoots
more
Orchids'
synanthous,
parvis
T
1400 m,
y p
Iabello
u
s:
perbreviter ungui-
Morrison
1659
(spirit
February 1978.
—
Mediocalcar
spec.;
(b/w photograph).
long,
frequently
3-6
mm
mm
across,
apart, cylindrical
almost
four-foliate. Leaves very
entirely
as
well
as
to
subacute, rarely
acute,
minutely
mucronate;
the bases of heteranthous inflorescences
the base without an
Inflorescences
exposed
solitary,
ad-
shortly petio-
plane, narrowly elliptic (index 3.5-6), (7-)10-18(-23)
apex obtuse
at
—
thick. Pseudobulbs 1-5
mm
3-5 transparent, subacute, keeled sheats.
rarely
floribus
extenso differt.
1.
Fig.
covered with root-hairs. Rhizome creeping, free-
mm
(5—)10—15(—20)
rhizome; three-,
late, spreading in
—
Graf (1978) 735, 'Tropica' (colour photograph).
ly branching, mat-forming,
to
quadrifoliatis,
labelli
Guinea, Central Province, Efogi,
(1980) 108, fig. 98
0.5
tri- vel
ad basin
nov.
spec.
mm
car-
enveloped
heteranthous
bract. Peduncle 3-7
mm
long,
or
at
168
Fig.
BLUMEA
1.
Mediocalcar decoratum
column;
g.
Schuiteman.
VOL.
a.
34,
Habit;
column (a Schuiteman 69; b-g Womersley
No.
b.
1,
1989
flower;
s.n.
c.
petal;
30-10-1969).
d.
lip;
e.
sepals; f. lip
&
A. Schuiteman:
the apex with
5-7
Synsepalum
mm.
free
tened;
All
long.
less
Flowers
c.
3
mm
reflexed; margins
2000
cylindrical,
in
Epiphyte
Castanopsis,
identical in
green
The
colour
above, pale
pseudobulbs
Irian
of
JαYA.
Mountains:
PAPUA
41543.
—
(received
green
18725.
column;
spur
deeply
the base of
to
wide
mm
mm
at
the apex,
trunk
on
usually
branches of Notho-
major
or
in shaded
Altitude 900-
positions.
of Kratke
ex
Kew).
—
March
Sept. 1975,
—
mountains
E
12
alt.
light
take
petals
grass-green
are
dull
to
Leaves and
purple tinge.
on a
and
in
Kumopa
Vink
?, May 1960,
Arandora,
& Schram BW
1600-2000 m, March-April
of
al.
1978,
Prov.:
Mt
Agamoia
and
Mt
m,
m,
alt.
8666;
?,
OcL
Central
1958, Bergman 140,
above
m,
Notes. Mediocalcar decoratum is
inflorescences,
species
the
1000 m,
s.n..
Womersley
—
s.n.
characterized,
M.
26827
date?, Womersley (4
m,
Millar
&
Garay NGF
miles
1982
from
(not
logging
area
1850 m,
1300
1940
m,
Cruttwell
Brass
Origin
flower,
SE of
material
2000
Wau,
1980,
m, Febr.
Jan.
1900 m,
station,
Sept.
Cribb
1976,
1980, Hope ANU
Mt
not stated
1070 m,
Moiba,
Streimann
NGF 28951;
(ex cult.):
Mason
30/10/1969.
among other
things, by
its 3-
is of similar small
pygmaeum Schltr.
flowers and the
S
Dodd
420. Fergusson Island,
27088;
July 1972,
in
to
usually 2-foliate, occasionally produce
differs in the broad leaves
narrow
3
July
Bulolo,
1956,
m, June
Mayu I.,
s.n.;
only
W of
May 1954,
1975, Womersley
Of these
m,
nr.
1963, Hartley 12168; Goroka.
Aug.
1659; Kosipe Swamp,
1400
4-foliate pseudobulbs. A few other species,
The latter
m,
al. NGF
et
Bot. Leiden
1954, Womersley NGF 6058;
July
m,
1935, Carr 10334; Efogi,
Ailuluai, 900
30/10/1969; Northen
3-foliate pseudobulbs.
1850
area
1968, Henty
Sept. 1963,
m,
Morobe Prov.: Kaismik
Sept.
Param,
1850
Goroka, 2000
logging
Morrison
Paori
Febr.
—
Oct.
cult. Hort.
19A; Aiyura-Lae road
near
Gumi
1250
Boridi,
1700
69.
1832;
1525
Aiyura,
Chadin
ex
Nondugl, 1800
near
Aiyura Range,
south
1964,
Schuiteman
et
1400 m, Febr.
s.n.
miles
Prov.:
Ogelbeng,
near
Prov.:
22718; Unggai
1984),
area,
Creek
1600 m,
Oksapmin,
Ambua, alt.?, date?,
Highlands
NGF
1969, Schodde 5386;
Mason
I
are
entirely
or
the
pseudobulbs pale yellowish-green.
Prov.:
Jan.
Sands
between
Sepik
Prov.: Mt
Western
Kim
c.
Milne Bay
Suckling
The leaves
sepals.
in strong
of Motito,
Kew.
Central Prov.:
26; Efogi,
28112.
the
tips
of the labellum and
region: Arabu, near Wettamotti
Highlands
Range
cult. Hort.
1966, Millar
—
of the
sulphur-yellow
742.
Eastern
base
cult.
emerging parts
tips
with
orange with white
tips,
examined:
Lakes
Wissel
NEW GUINEA. West
alt.?,
ture.
2
long,
mm
5-7
Lip
inconspicuous;
extending
generally bright orange-red
growing
Southern Highlands
from
—
The
below,
specimens
Hoogland NGF 4963;
1604;
forest,
Swart (= Him) Valley, Kadubaka,
209, 282, 434,
Mt
3
mm
more or
narrow,
auricles
the
clasping
and flat-
open
reflexed, 2.5-3.5
Petals
mm,
mm across,
c.
width 5-7
mm.
red with green
the free
to
1939, Eyma 5248; Kadaitadie,
July
2
by
less
2.5
apically,
etc.,
tube is
sepaline
Collections
E
c.
1
c.
more or
montane
cut
mm; apex acute; 1-nerved.
claw
10 by 3
c.
Dacrydium,
entirely yellow.
or
orange
145.
wide when
m.
Colour.
m,
erect,
1
c.
laterally compressed,
golden-yellow tips, rarely
Sept.
by
Pedicel and ovary
length, height and
mm
acute, without mucro,
to
position;
Column short, much dilated
Ecology.
fagus,
ex
5.5-7
wide in natural
foot very short. Fruit
or
subacute
12-16
169
long.
mm
sepals smooth externally, conspicuously gibbose.
saccate, somewhat
lip.
and
long
mm
tips triangular,
apex acute,
the
1.5
c.
urceolate-globose, oblique;
6.5-8.5
elliptic (index 5.5-7),
long,
Mediocalcar
species of
new
acuminate bracteole
triangular
a
long.
mm
Two
(index
<
3),
long-clawed lip
the
sta-
always synanthous
with
a
weakly devel-
BLUMEA
170
Fig. 2. Mediocalcar subteres
column; g.
column
(a
Kairo
VOL. 34,
Schuiteman.
NGF 44083 ;
a.
Habit;
b-e Reeve
No.
b.
1,
1989
flower;
751; f,
g
c.
petal; d. lip;
Cribb S
129)
e.
sepals;
f.
lip
&
A.
oped
spur.
M.
Reeve informed
quadrifolium. Regrettably
having published
without
collected
by
take this
to
folium,
there
just
as
congeneribus
foliis
its way into
making
now
specimens
which the
to
Schuiteman, spec.
radicibus
subteretibus,
1850 m,
Yamap,
near
Roots
c.
0.5
mm
long,
cending,
3-7
mm
Young
shoots
sheaths.
bract
bracteole
oblique,
c.
(1.5-)3-5(-7)
nov.
New
long.
mm
c.
sepals
or
more or
less
auricles well
less
8-9
11-16
passing
the
c.
3
mm
base of the
lip.
foot very short. Fruit
apex,
keeled
would
Ecology.
yellow.
as
Epiphyte
Araucaria,
in
2
c.
apply
are
IRIAN JAYA.
Baime
the
to
terete,
more or
(8—)15—
free apex
rhizome;
as-
wide; apex acute,
the base with
long.
mm
5-5.5
wide when
to
5.5-6.5
by
c.
1
3-4
clavate,
mm;
4-5
3-3.5
acute
urceolate,
mm
long,
mm
wide.
to,
2
or
by
narrow,
1-
or
1.5
somewhat
mm
wide
3-
mm,
clasping
erect,
2
c.
c.
La-
long.
Petals
apex acute;
claw
margins
extending
mm
acumi-
triangular
Flowers
externally.
position;
apex acute;
mm across,
narrow
open and flattened; free
cut
almost smooth
a
a
high,
mm
mucronate.
subacute, membra-
the
sur-
at
the
forest, creeping
on
moss
covered branches
Altitude 1200-2000 m.
flowers with
a
or
red base. The
dull green, the pseudobulbs
orange-yellow;
ovary
the type
is bright greenish-
yellow-green.
examined:
Collections
Bergman
Kairo
s:
seen.
montane
etc.
having yellow
The leaves
u
Rhizome creeping,
Colour. The whole flower is usually bright yellow
is described
y p
Province,
approximate,
the apex with
wide in natural
mm
Column
not
at
at
7-10
long,
developed, slightly recurved;
of Nothofagus,
T
—
Morobe
only slightly spreading,
mucronate,
sharply
long,
mm
long,
mm
mm
elliptic (index 5.5-6.5),
mm
differt.
Guinea,
adnate
2-3
long,
cm
column; spur broadly cylindrical,
Central Mountains:
Swart
(= Ilim) Valley, Kadubaka,
1600-2000
m, March
1958,
1980, Reeve
751.
168.
PAPUA NEW GUINEA.
Morobe Prov.:
W of
epithet quadri-
the
closely adpressed, imbricate,
5
and
long
mm
largely
solitary, synanthous,
laterally compressed,
nerved. Lip 6.5-7
Creek
first
2.
papillosis
minute
Pedicel and ovary
tips triangular, subacute,
—
later,
I found it
cultivation,
using
Fig.
—
thick. Pseudobulbs
Peduncle 5-15
long.
mm
1
mm
mm across,
enveloped by
Synsepalum 8-9
more
much
not
plant, apparently
1-, occasionally 2-foliate. Leaves sessile, subterete, straight,
Inflorescences
3
c.
2
c.
2.5-3.5
long;
channeled above,
teral
bifolium
describe this spe-
to
epithet trifolium
thick, densely minutely papillose.
mm
25(—35)
nate
M.
to
August 1969.
frequently branching,
nous
planned
As this attractive little
44083 (LAE, holo; AMES, K, SING, iso), Papua
Creek
less
that he
me
overdue step. I refrain from
many
Mediocalcar subteres
NGF
related
closely
well.
as
A
1935, is
long
too
are
more
171
he ended his botanical activities
description.
a
C.E. Carr in
necessary
probably
Mediocalcar
of
J.J. Smith, all with heteranthous inflorescences.
versteegii
Some years ago T. M.
as
species
new
Mediocalcar decoratum is
J.J. Smith and M.
cies,
Two
Schuiteman:
logging
Bulolo,
head
Enga Prov.: Apapa
of
Baime
area between
1850 m,
Sept.
River
near
Creek, Yamap, 1850
Wau and
Bulolo, 1200
1980, Cribb
S
159.
m,
Yondalia,
m,
1650
Aug. 1969,
m,
Aug.
Kairo
NGF
Sept. 1980, Cribb S 129\
44083; Regma
Gumi
logging area
172
BLUMEA
VOL.
Notes. Mediocalcar subteres is
practically glabrous
to
noticeably
species,
No.
1, 1989
distinguished by
the naked eye but
also distinctive. In all other
34,
as
its subterete leaves. The roots,
densely papillose
far
as
now
in
microscopic view,
known, the
are more or
roots
are
less
covered with root-hairs.
ACKNOWLEDGEMENTS
ing
I wish to thank
the
directors and
examine
the
material cited
me
to
valuable criticism,
Mr. T. M.
Reeve, formerly
Mediocalcar
to me in
Industries, PNG,
Garden
and Dr. J.F.
at Port
as
of
this
Veldkamp
1982. Furthermore
well
as
for
making
and Mr.
my
I thank Dr.
checking
for
and Mr. M.
M.
visit to
E.F. de
the Latin
to thank
Tabaru,
Galore, formerly
Papua
Vogel for
diagnoses.
generously donating
I would like
Mr. F. Ginate
and SING for allow-
AMES, CANB, K, L, LAE, S
paper.
Laiagam, PNG,
Moresby, PNG,
have all contributed to
curators of
in
New
Mr. E.
I
his kind
am
several
Division
both of the National
Guinea in
1982
of the
a
most
advice and
obliged to
living specimens
Semoso,
director
much
Lae
of
of
Primary
Capital
Botanic
herbarium, who
successful
one.