Porpax reticosa (Wight) Schuit.
In Malesian Orchid J. 24: 107 (2020)
Synonyms
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Conchidium reticosum (Wight) Ormerod in Taiwania 57: 119 (2012)
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Eria reticosa Wight in Icon. Pl. Ind. Orient. 5(1): 4, t. 1637 (1851)
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Pinalia reticosa (Wight) Kuntze in Revis. Gen. Pl. 2: 679 (1891)
Ecology Epiphytic on Catunaregam spinosa & Lithophytic found growing on rock crevices of vertical rock in moist ever green forest
Pseudobulbs 7-15mm across discoid, covered with reticulate sheath which becomes loose on drying
Shoots 1-2 arising from base of pseudobulbs sheathed at the base, sheaths 2-3, each 7-13mm long, cylindric oblique at the mouth denticulate mucronate greenish below, purple above
Leaves: 2 appearing together with flower,5-7x1-2cm broadly oblong or oblong- lanceolate, tapered at the base, acute, mucronate entire, dark green, often tinged brownish purple
Buds boat shaped, pale greenish purple
Scape: 1 flowered, arising from upper sheath, generally from the side, about 1mm thick 2-3cm long, long, purplish, curved by weight of the flower
Flower: white, variable in size sweetly strongly scented Pedicel with ovary 4-5cm long, slightly curved, white within the bract light brown on emergence
Bract membranous, pale brown-purple, almost orbicular in outline cordate, mucronate, sheathing pedicel & ovary to little more than half the length, margins frilled wavy slightly turned outwards, mid rib & two lateral veins distinct
Sepals subequal, white, stuffed with pale pink, broadly oblong-lanceolate, mucronate, entire, glabrous, nine nerved
Dorsal sepal 28-30x8-10mm, lateral ones 25-28x6-8mm somewhat broadly falcate
Mentum 8-10mm long, curved. white, oblong conical, emarginate
Petals 28-30x6-8mm white stuffed with pink, oblong-laceolate, acute or sub mucronate, 7 nerved glabrous
Labellum 18-25mm oblong-obovate, sessile on column foot,3 lobed, Lateral lobes 5-7x1-2mmnarrowly oblong somewhat ear like, acute or rounded, entire red margined,with two orange-yellow crests running from the base of lip to beyond lateral lobes, tips pf lateral lobes and area in between orange-yellow; Midlobe 8-10x4mm, oblong often slightly dilated in apical half, rounded or tapering at the apex, crenulate
Column short white tinged with green, foot 10x3mm, curved, narrowly oblong, yellow with reddish purple margin & purple veins on inner side, paler towards apex; Anther 3x3mm white, above reddish inside, obovate-oblong, produced into conical apiculum in front, sub concave at the back
Pollinia 8 upper four ovoid-oblong, lower four minute, attached to short granular membrane
Stigmatic surface pale green, with stellate marking in the centre
Capsule 12x8mm obconical, truncate at the apex, erect with six strong ridges
Flowering: July-August
Fruiting: September to March
Threat: Increased atmospheric temperature heats rocks on which it is growing reducing natural population of this orchid, collection of fuel wood is another threat