Smith : Orçhidaceac novae Malayenscs X. 45 



Dendrochilum (sect. Platycliiiis) ophiopogonoides J. J. S. il. sp. 



Rhizoma valdc ramosum, adscendens, va^j^inis tubulosis imbricantibus 

 versus basin pseudobiiiborum accrescentibus dense promiiieiiter iiervosis opacis 

 parce inconspicue piiiictatis saltem superioribus acutis ad c. 5.5 cm. loii}:(is 

 tectiim. Pseudobulbi dense aggregati, rhizoma continiii, sicco ten'uiter teretes, 

 c. 3—4 cm. longi. Folium lineare, apiccm versus angustatum, acutum vel 

 auguste obtusum, plus minusve apiculatum, basi acuta breviter pctiolato- 

 angustatum, nervis majoribus c. 5 dorso prominentibus, rigidum, sicco 

 subsemipellucidum, c. 13.5-16 cm. longum, 0.6—0.73 cm. latum; petiolus 

 canaliculatus, c. 1.5 cm. longus. Inflorescentia in pseudobulbo immaturo 

 folio fere evoluto synantha, pedunculo tenuiter filiformi, c. 15— 17 cm. longo, 

 racliide leviter flexuosa, vaide lateraliter compresso-quadraiigula, lateribus 

 angustis sulcata, sparse et minutissime muriculato-puberula, c. 8 — 11.5 cm. 

 longa, internodiis c. 0.275—0.3 cm. longis. Bracteae ovarium superantes, 

 marginibus involutae, late ovatae, acute apiculatae, basi breviter contractae, 

 irregulariter marginatae, nervis c, 5 dorso prominentibus, c. 0.35 cm. longae, 

 0.3 cm. latae, 2 inferiores stériles. Flores parvuli, bene aperti, c. 0.85 cm. 

 lati. Sepalum dorsale lanceolatum, apicem versus angustatum et recurvulum, 

 acutum, concavum, 3nervium, c. 0.47 cm. longum, 0.15 cm. latum. Sepala 

 lateralia divaricata, oblique lanceolata, apicem versus angustata, acuta, 

 obtusangule canaliculata, cum lateribus convexis, 3nervia, costa média dorso 

 prominula, c. 0.5 cm. longa, 0.15 cm. lata. Petala oblique lanceolata, 

 acuminata, acuta, supra basin leviter consfricta, leviter canaliculata cum 

 lateribus leviter convexis, ^/s partibus superioribus erosa, Inervia, nervo 

 dorso prominulo, c. 0.46 cm. longa, 0.1 cm. lata. Labellum porrectum, 

 leviter sigmoideum, 31j3bum, concavum, subtus convexum cum costa longi- 

 tudinali convexa in parte inferiore, 3nervium, costis 2 satis conspicuis 

 brevibus parallelis basi lamella transversa altiore calliformi a dorso compressa 

 conjunctis iiifra basin lobi intermedii evanescentibus supra basin inter lobos 

 latérales, explanatum c. 0.45 cm., usque apicem loborum lateralium c, 0.24 

 cm longum, ad lobos latérales 0.3 cm. latum; lobi latérales patentes, 

 porrecti, oblique oblongi, apiçe plus minusve recurvuli, oblique subtruncati 

 vel obtusi, margine exteriore erosuli, extus convexi intus concavi, gy- 

 nostemium bene superantes; lobus intermedius porrectus, leviter adscendens, 

 apice recurvulus, obverse rhombeus, breviter acute acuminatus, inferne 

 marginibus recurvus, apice canaliculatus, parte superiore erosulus, c. 0.26 

 cm. longus, 0.2 cm., basi 0.14 cm. latus. Gynostemium brevissimum, latum, 

 c. 0.15 cm. longum, alis lateralibus in dimidio inferiore, patentibus, porrectis, 

 incurvulis, verticalibus, oblique oblongis, acutiusculis, intus leviter convexis, 

 alam apicalem aequantibus, ala apicali quadrangula, truncata, apice crenulata, 

 concava, pede 0. Anthera parva, cucullata, abscondita, transverse ovalis, 

 antice visa subconica, basi «bilobula, c. 0.03 cm. lata, connectivo conspicuo, 

 crasse gibboso, apicem fere attingente. Rostellum erecto-patens, semiovale, 

 obtusum, apiculatum, concavum, subtus convexum. Stigma subsemilunatum, 



