ORCHIDACE^ 



3. Trichoglottis tenuis A. c^ S. sp. nov. Herba pergracilis. 

 Radices pro plaiita crassae, rigidae, fibrosae, vaginas infimas per- 

 forantes. Caulis ad basim ramosus, gracillimus, plus minusve 

 valde arcuatus, vaginis foliorum coriaceis omnino obtectus. Fo- 

 lia disticha, late patentia, linearia, oblique et obscure bilobata, 

 basi complicata, coriacea. Inflorescentiae numerosae, saepissime 

 biflorae. Flores perparvi, in sicco pellucidi. Sepala lateralia tri- 

 angularia, acuta, basi antice abrupte dilatata et calcari adnata. 

 Sepalum dorsale oblongum, apice eroso rotundatum, concavum. 

 Petala falcato-oblanceolata, apice late rotundata. Labellum con- 

 spicue calcaratum, trilobatum; lobi laterales erecti, falcato-tri- 

 angulares, obtusi; lobus medius triangularis, basi in auriculas ro- 

 tundatas dilatatus, deinde ad apicem acuminatum sensim angus- 

 tatus; calcar conicum, apice rotundatum. Gynostemium breve, 

 crassum, apice dentatum. 



Plant very slender. Roots puncturing the lower leaf sheaths, 

 stout, rigid, fibrous, flexuous, deeply longitudinally sulcate, about 

 1.1 mm. thick. Stem about 37 cm. long, very slender, about 

 1.1 mm. thick, branching below, branches more or less strongly 

 arcuate, entirely concealed by the striate-nervose, appressed- 

 tubular, coriaceous leaf sheaths. Leaves about 5-7.4 cm. long, 

 3-4 mm. wide, distichous, horizontally spreading, narrowly linear, 

 slightly oblique and falcate in the dried specimen, acuminate to 

 a very obliquely bilobed apex, slightly narrowed to a sessile com- 

 plicate base, coriaceous, many-nerved with the mid-nerve more 

 or less sulcate above and carinate beneath, rising at intervals of 

 ±1.3 cm. Inflorescences numerous, usually two-flowered, in fas- 

 cicles puncturing the lower part of each leaf sheath nearly oppo- 

 site the leaf. Flowers very small, pellucid in the dried specimen. 

 Lateral sepals about 3 mm. long, 2.5 mm. wide at the base, tri- 

 angular in outline, at the base adnate to the spur by an abrupt 



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