Eria chienii [Vuong, Aver., V.C.Nguyen & T.T.D.Pham] in ed SECTION Cylindrolobus Bl 1856

Photo by © Nguyen Van Canh Taiwania 65(3): 272?276, Cylindrolobus chienii (Orchidaceae), a new species from Central Highlands of Vietnam Van Canh NGUYEN, Leonid V. AVERYANOV, Van Khuong NGUYEN, Thi Thanh Dat PHAM, Tatiana V. MAISAK, Ba Vuong TRUONG 2020

Common Name or Meaning Chien's Eria [Mr. Pham Van Chien, Vietnamese discover of species current] - in Vietnam Ni Lan Chien

Flower Size .4" [1 cm]

Found in Vietnam on mossy vertical cliffs in primary evergreen forests on granite at elevations 1000 to 1200 meters as a small to medium sized, cool growing lithophyte with a short, plagiotropic rhizome giving rise to erect, terete, distally slightly thickened stems with 8 to 11 nodes and carrying 3 to 4, at the apex, lanceolate, acute leaves that blooms in the later winter on an axillary, glabrous, peduncle .16 to .24" [4 to 6 mm] long, rachis .4" [1 cm] long, 2 flowered inflorescence with dark yellow, ovate to broadly ovate, 7 veined, shorter than the ovary floral bracts.

"The new species may be compared with E gloensis from India (Agrawala & Ormerod, 2014). However, it distinctly differs from C. gloensis in glabrous scape, rachis, pedicels and flowers (vs. scape, rachis, pedicels and flowers pubescent), short inflorescence ca. .064" [1.6 mm] long (vs. .64" [16 mm] long), 2 carinate callus rising distally into prominent bilobulate plate T-shaped in cross section (vs. callus on the disc 2- carinate, turn into half-discoid callus on epichile); prominent knob-like papillose callus at column foot apex (vs. column foot with no distinct callus). The new plant also looks similar to E bidupensis but clearly differs in 2 flowered distinctly lateral, inflorescences .24 to .28" [6 to 7 mm] long (vs. inflorescence regularly with more than 2 flowers, subterminal, to 2.4" [6 cm] long), 2 carinate callus forming distally (at base of mid lobe) fleshy bilobulate plate, T-shaped in cross section (vs. disc with 2 separate keels and one median papillous or hairy cushion), median lobe with dense long stiff white hairs (vs. median lobe subglabrous, with dense long stiff white hairs)." Van Canh NGUYEN, Leonid V. AVERYANOV, Van Khuong NGUYEN, Thi Thanh Dat PHAM, Tatiana V. MAISAK, Ba Vuong TRUONG 2020

Synonyms *Cylindrolobus chienii Vuong, Aver., V.C.Nguyen & T.T.D.Pham 2020

References W3 Tropicos, Kew Monocot list , IPNI ; * Taiwania 65(3): 272?276, Cylindrolobus chienii (Orchidaceae), a new species from Central Highlands of Vietnam Van Canh NGUYEN, Leonid V. AVERYANOV, Van Khuong NGUYEN, Thi Thanh Dat PHAM, Tatiana V. MAISAK, Ba Vuong TRUONG 2020 as Cylindrolobus chienii photo fide;

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