e-Flora of Thailand
Volume 12 > Part 3 > Year 2022 > Page 784 > Orchidaceae
101 Eria Lindl.
Edwards’s Bot. Reg. 11: t. 904. 1825., nom. cons.; Pridgeon et al. (eds.), Gen. Orchid. 4: 558. 2005; S.C.Chen et al. in Z.Y.Wu et al. (eds.), Fl. China 25: 343. 2009.
Accepted Name : This is currently accepted.
Synonyms & Citations :
Description : Epiphytes or lithophytes. Rhizome creeping. Pseudobulbs with one distinctly enlarged internode, cylindrical to ovoid, usually angular; base covered by sheaths. Leaves 2–4, clustered at the apex of the pseudobulb, convolute or conduplicate, glabrous, coriaceous, articulate, tapering at base. Inflorescences racemose, subterminal and/or lateral, erect or suberect, glabrous or pubescent; floral bracts scarious (dead at anthesis), triangular to ovate, sometimes strongly reduced. Flowers resupinate, opening widely, usually cream to pale yellow. Dorsal sepal elliptic-oblong or oblanceolate-oblong. Lateral sepals triangular-oblong, broadened at base, forming a mentum. Petals similar in size and shape to dorsal sepal, glabrous. Labellum 3-lobed or entire; disc with lamellae or ridges. Column provided with a distinct column foot; anther incumbent; pollinia 8, pyriform to oblongoid, laterally compressed. Fruit a capsule dehiscing by longitudinal slits.
A genus of ca 15 species, distributed from mainland Asia to New Guinea; 4 species in Thailand.
Key to the species
1. Leaves plicate. Flowers with numerous stellate hairs 3. E. javanica
1. Leaves conduplicate. Flowers without stellate hairs 2
2. Labellum simple, with 5 keels in basal half 4. E. vittata
2. Labellum 3-lobed, with 2 or 3 keels in basal half 3
3. Pseudobulbs slenderly cylindrical. Disc of labellum with 2 keels; mid-lobe with 5-7 wavy keels in its basal to central part 2. E. coronaria
3. Pseudobulbs ovoid to ovoid-oblongoid. Disc of labellum with 3 keels; mid-lobe with 7 wavy keels running throughout its length 1. E. clausa