| Epiphytic plant,
fleshy roots, flexuous, glabrous.
Stem short, completely enclosed by imbricating
Leaves shining, fleshy, leathery, at conduplicate
base, obovate or oblong-elliptic or elliptic, acute or obtuse, of more than
22 cm. long for 10 cm. wide.
Flower stalk almost erect, sometimes
arcuate, generally simple, being able to be a little longer than the leaves,
but often shorter, with rachis in zigzag.
Bracts triangular, cucullate, acute, from
4 to 5 mm.
Flower fleshy of 3 cm with well spread out
segments. Dorsal sepal elliptic, obtuse, mucronate at apex. lateral sepals
identical to dorsal sepal, obliques, distinctly carinate dorsally. Petals
largely elliptic or sub-orbicular, slightly acute or obtuse.
Lip adnate to column-foot,
distinctly Clawed, 3-lobed, a little longer than the petals. Lateral
lobes directed towards outside, oblong-linear, longitudinally sulcate
in middle, the former part more fleshy than the posterior one with
a bidentate acute apex. Midlobe narrowly obovate-oblong or oblong-elliptic,
very fleshy, almost trigonous, indistinctly carinate in middle,
slightly incrassate at apex, decorated with few hairs. Disc between
the lateral lobes provided of an appendix turned towards back, hardly
bidentate. At the junction of the lateral lobes and midlobe there
is a fleshy callus, bidentate, longitudinally sulcate.
Column fleshy, almost cylindrical,
sometimes arcuate, 6 mm long.
ovary up to 2 cm long.
Lip of Phalaenopsis javanica
|By DM. Puspitaningtyas, Kebun Raya
Published in Eksplorasi 3.2 pg.5
J.J. Smith originally
described P. Javanica in the Bull. Jard. Bot. Bull. Ser. 2, 26:77 (1918).
Published information about P. Javanica is very limited. Sweet (1980)
and Comber (1990) published two small reports on the species. According
to Sweet (1980), the species was first recognized in 1914 from a collection
in the Royal Botanic Garden, Glasnevin, Ireland by Sir F.W. Moore.
Leaves are more or less oblong, undulate
and a bit thinner than the others of the same genus, each plant produces
2-8 leaves, 20-28 cm x 8-13 cm; bright green with a shiny surface. Flowers
are arranged on a inflorescence, on pedicels which gradually lengthen
as the flowers appear in succession. At the time the flower bud emerges
it appears sessile, but the pedicel develops and continues extending while
the bud develops, reaching up to 2.5 cm in length. Sepals and petals 1-1.3
cm x 1.5-2.0 cm, white but sometimes varying from white to greenish-yellow,
marked with longitudinal stripes consisting of numerous small brownish
purple spots giving the whole an attractive appearance. The white lip
has a purple apex, hairy at the tip of the apex. Flowering is not simultaneous,
with only 1-3 flowers on each peduncle blooming at a time. If the plant
is healthy, a single stalk can produce more than 10 flowers. Flowers mostly
face downwards and do not fully open. Flowers are about 3-5 cm across
the lateral sepals. P. Javanica does not have a flowering season, so can
produce flowers throughout the year. Each flower can bloom for about 2
weeks, however, if pollinated they last 7 days before wilting and the
spur inside the pedicel begins to swell. Fruits are ca. 7.5-8.5 cm long,
3.0-3.5 cm diameter, and contain numerous seeds.
P. Javanica is endemic to West Java.
Comber (1990) reported that this species was originally collected in South
Garut, West Java. It is found at altitudes from 700-1000 m in south-eastern
parts of West Java.
In 1975, a team
from Bogor Botanic Garden collected P. Javanica on a mountain in South
Cianjur where it occurred in some abundance in the forest. Unfortunately,
all the collections made at that time have since died. In 1992, staff
from Bogor Botanic Garden returned to South Cianjur in search of P. Javanica
and found local people selling wild-collected plants. At present, Bogor
Botanic Garden has 10 specimens in cultivation.
P. Javanica is rare, and is threatened in
the wild by the excessive exploitation by local people for sale to collectors.
Another major threat is loss of habitat due to conversion of forested
land and forestry. The staff of the Bogor Botanic Garden are undertaking
a conservation programme to assist the survival of the species. Unfortunately,
germination of seeds has to-date been unsuccessful. Attempts to propagate
the species by both seeds and vegetative parts are still being undertaken.