ORCHIDACEAE NOVAE MALAYENSES X. 



Auctore 

 J. J. Smith. 



Peristylus tobensis J. J. S. n. sp. 



Tubera subovalia, sicco c. 0.5 — 0.6 cm. longa. Caulis hypogaeus inter- 

 dum elongatus et ad nodos radicans, ad c. 2 4 cm. loiigus. Caulis epigaeus 

 brevis. Folia pauca, basilaria, oblonga, apicem versus angustata, c. 3 cm. 

 longa; vaginae brèves, tubulosae. Inflorescentia erecta, densius muitiflora, 

 peduiiculo c. 12 — 17.5 cm. longo, vaginulis c. 4 foliaceis apicem versus 

 decrescentibus in bracteas vergentibus donato, rachide c. 2.5— 4.5 cm. longa. 

 Bracteae auguste ovato-lanceolatae, sensim angustatae, inferiores ad c. 0.85 — 1 

 cm. longae (sicco), superiores minores. Sepakim dorsale oblongum ad 

 lanceolatum, acuminatum, marginibus incurvis apiculatum, bene concavum, 

 1— Snervium, costa média dorso prominente, c. 0.5—0.75 cm. longum, 

 0.14 — 0.2 cm. latum. Sepala oblique auguste lanceolata, falcatula, sensim 

 acuminata, apice marginibus incurvis apiculata, canaliculata, nervo 1 dorso 

 prominulo, c. 0.5—0.7 cm. longa, 0.13 — 0.16 cm. lata. Petala basi obliqua 

 ungui labelli adnata, oblique subelliptica, longe acuminata, acuta, concava, 

 Inervia cum nervo laterali 1 utrinque, c. 0.5 — 0.65 cm. longa, 0.17—0.2 

 cm. lata. Labellum basi gynostemio et basi petalorum adnatum, calcaratum, 

 unguiculatum, apice recurvum, concavum, 3nervium, explanatum absque 

 calcari c. 0.48 cm. longum, ungue conspicuo, subovali-oblongo, concavo, 

 intus infra apicem callo conspicuo conico porrecto instructo, subtus late 

 convexo-tricostato, c. 0.28 cm. longo, 0.18 cm. lato, lamina trifida, laciniis 

 lateralibus divergentibus, incurvis, oblique oblongis, margine antico subrectis, 

 margine postico plus minusve rotundatiset crenulato-repandulis, c. 0.14—0.16 

 cm. longis, fere 0.1 cm. latis, lacinia intermedia lateralibus longiore et 

 angustiore, obtusa vel acuta, c. 0.17 cm. longa, bene 0.05 cm. lata, calcari 

 ovario parallelo reverso, cum labello angulum obtusum faciente, ovoideo, 

 acuminato, subacuto, c. 0.2 cm. longo. Gynostemium cum ovario angulum 

 obtusum faciens, c. 0.2—0.25 cm. longum, auriculis dimidium gynostemii 

 vix superantibus, gynostemio adpressis, oblongis, truncatis. Anthera 

 gynostemium continua, thecis parallelis, contiguis, extus convexis, connectivo 

 costiformi, apice in rostrum obtusangule incurvulum apice subrecurvulum 

 triangulum producto. Rostelli lobus intermedius arcte conduplicato-triangulus, 

 acutus. Ovarium tortum, 6sulcatum, c. 0.575—1 cm. longum. 



