Smith : Orchidaceac novae Malayenses X. 13 



Sumatra: Batakiaiideii, Toba Iake, 1450 m. (O. Hagerui^ ii. 7 pp., 

 1916-1917). 



Differiiig from P. candidiis J. J. S. in tlie smaller flowers witli a longer 

 spur and a callus on the lip, and from P. fcnfaculatus ]. J. Sv in the larder 

 flowers witli very short side laciiiiae of the h'p. 



Description from herbarium spécimens the leaves of which were ail 

 in a bad state. 



Platanthera angustata Lndl. Gen. et sp. Orch. (1835), 290; etc. 



var. singgalangensis JJS. n. var. 



Rhizoma brevissimum, radicibus crassis, villosis. Folia radicalia erecta, 

 petiolata, ovata, vix acuminata, apicuiata, bas! longe in petiolum contracta, 

 curvinervia, in utraque parte costae mediae supra canaliculatae subtus valde 

 carinatae nervis c. 3 majoribus et nonnulis tenuibus, reticulato-venosa, 

 c. 9 — 10 cm. longa, 5—5.5 cm. lata, basi contracta c. 3 — 4 cm. longa ; 

 petiolus canaliculatus, c. 6.5—9.5 cm. longus, basi vaginis tubulosis obtectus. 

 Inflorescentia erecta, laxe multiflora, pedunculo c. 30—40 cm. longo, basi 

 nonnullis vaginuiis tubulosis superioribus accrescentibus ad c. 6—7 cm. 

 longis obtecto, deinde vaginis foliaceis c. 2—4 sessilibus amplexicaulibus 

 vel fere amplexicaulibus marginibus et costa média decurrentibus ovatis 

 acute acuminatis superne decrescentibus et in bracteas vergentibus ad 

 c. 4.5 — 6.25 cm. longis donato, rachide saepe plus minusve serpentina, 

 bractearum marginibus et costa média decurrentibus plus minusve angulata, 

 c. 13—20 cm. longa. Bracteae ovatae, acuminatae, acutae, basi decurrentes, 

 supra in utraque parte costae mediae canaliculatae convexae, ad c. 1.65 cm. 

 longae, 0.8 cm. latae. Flores carnosuli, c. 0.7 cm. lati, cum calcari c. 2.4 cm. 

 longi. Sepalum dorsale erectum, cum petalis galeatum, late ovatum, 

 obtusum, concavum, nervis 3 dorso prominulis, c. 0.75 cm. longum, 0.55 cm. 

 latum. Sepala lateralia oblique reflexa, apice recurva, convexa, oblique 

 oblonga, margine interiore rotundata, obtusa, nervis 3 dorso prominulis, 

 c. 0.875 cm. longa, 0,4 cm. lata. Petala sepalo dorsali leviter agglutinata, 

 oblique subsemiovata, apice leviter contracta, obtusa, retusa, margine antico 

 inferne rotundata, basi fauci calcaris et basi gynostemii adnata, 2nervia, 

 c. 0.75 cm. longa, 0.36 cm. lata. Labellum recurvum, cum gynostemio angulum 

 subrectum faciens, fauci calcaris basi gynostemii adnatum, late lineare, apicem 

 versus vix angustatum, obtusum, basi utrinque leviter obtusangule dilatatum, 

 convexum, c. 0.95 cm. longum, basi 0.35 cm., medio 0.25 cm. latum ; 

 calcar deflexum, leviter incurvulum, subteres, sectione transversa ellipticum, 

 apicem versus attenuatum, auguste obtusum, c. 1.7 cm. longum. Gynostemium 

 latum, cum ovario angulum obtusum faciens, lateraliter compressum, dorso 

 convexum, c. 0.4 cm. longum, 0.35 cm. latum, auriculis in medio gynostemii 

 marginum aiiticorum, semilunatis, verruculosis. Anthera magna, lata, con- 

 nectivo lato hippocrepiformi-curvato, apice oblique truncato spurie rotundato- 

 exciso, thecis remotis, clavatis, basi divergentibus, lateraliter compressis, 



