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The following article was written for the
Orchid Species Bulletin published by the Orchid Species Society,
which is based in Brisbane, Queensland in August 2005, updated in November 2010.
Bear in mind that any cultivation notes refer to the sub-tropical conditions of Southern Queensland, Australia.
Pinalia
stricta (Lindl.)
Kuntze
was
first described by John Lindley as Eria
stricta in Collectanea
Botanica in 1826. The specific epithet comes from the Latin strictus (upright, straight) for the inflorescences. Carl
Kuntze transferred this taxon to Pinalia
in Revisio Generum Plantarum
in 1891.
Recent DNA studies show that Eria is polyphyletic since it comprises species that are derived
from different ancestors. Based on these studies, Phillip Cribb and Yan Peng Ng
recognise Pinalia in Genera
Orchidacearum, Volume 4 in 2005.
Eria
stricta produces clusters of fleshy upright cylindric pseudobulbs that are
(2-) 6-14.5 cm long and 3-5 mm in diameter. The base of the pseudobulb is
covered with membranous sheaths that are 2-3 cm long, which soon dry and become
fibrous. Each pseudobulb bears two shortly stalked leaves at the apex.
Oblong-elliptic to lanceolate, the leathery leaves are 7.5-12 (-19) cm long and
1-2 cm broad. Several (1-3) upright racemes that are 8-13 (-18) cm long are
borne from the apices of the pseudobulbs.
The racemes bear many small flowers
that are 2-4 mm long along the upper half of the inflorescence, which are
densely arranged facing one side. The flowers of Eria
stricta do not open widely so the blooms are bowl-shaped and they are white,
sometimes with a tinge of pink along the basal edge of the petals. Its bilobed
yellow and brown pollen cap gives the flower a cheery face-like appearance. The
outside of the flowers is thickly covered with white wool, which extends also
along the green inflorescence. Unlike many other species of the genus, the
flowers of Eria stricta seem to be
comparatively long-lived and last for 2-3 weeks.
Eria
stricta is distributed in subtropical valleys in the
Himalayas
(
Nepal
, Sikkim,
NE
India
),
Myanmar
(
Burma
), and southern
China
between 300-1,300 (-1,800) m elevation. An intermediate-growing species, Eria
stricta seems to be ideally suited to southeast
Queensland
conditions. Grow it under about 70% shade in a well-drained medium. During the
warmer months provide high humidity, plenty of water and good air circulation.
Give it a slightly drier winter rest after flowering, when the plant is not
actively growing. Plants will still need less frequent watering as it should not
be allowed to remain dry for long periods.
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