Habenaria tiechangensis X.H.Jin & D.L.Lin 2024 SECTION Diphyllae Kraenzl 1892

TYPE Photo by © Dongliang Lin and Phytotaxa 646: 68 X.H.Jin & D.L.Lin 2024

LATE

Common Name The Tiechang Habenaria [A town in Maipo county, Yunnan province of China]

Flower Size .2" [5 mm]

Found in Yunnan province of China in subtropical limestone montane monsoon forest on moist, stone banks at elevations around 1900 meters as a miniature sized cool growing terrestrial with a fleshy, ellipsoid tuber giving rise to an errect, slender, pubescent stem carrying, 2, nearly opposite, basal, elliptic to ovoid, acuminate, narrowing and amplexicaul base leaves that blooms in the summer on an erect, terminal, to 4.4" [11 cm] long, rachis pubescent, laxly 5 flowered inflorescence with long ovate-lanceolate, acuminate, half as long as the ovary floral bracts and carrying, small, green, erect flowers.

" Habenaria tiechangensis belongs to the Diphyyla section and is allied to H. diplonema by having two leaves appressed to the ground, rachis and ovary pubescent, sterile bracts absent, and 3-lobed lips. But H. tiechangensis can be distinguished from the latter by having short and lanceolate lateral lobes of lip (much longer than median lobe and filiform with straight tips in H. diplonema). Additionally, H. tiechangensis has a short protruding groove at ther base of locules, and a pair of distinctive horn-like stigmas which elongate along the callus and the apex connivent at base of lip. Differs from H diphylla in the usually small plant, the shorter leaves, with 3 lateral, non-white veins, the smaller dorsal and lateral sepals, the lobed petals, the cushion like appendage, the pubescent rachis, the cylindric, twisted, slightly arching pedicel and ovary, the horn-like, elongate along the callus stigma and it occurs at much lower elevations.

Synonyms

References W3 Tropicos, Kew Monocot list , IPNI ;

* Phytotaxa 646: 68 X.H.Jin & D.L.Lin 2024

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