107 



EPIPOGUM NUTANS Rchb. f. in Bonplandia, v. (1857) 36 ; etc. 



Arfak Mts., Angi lakes, saprophytic amongst bracken, on bank by $ lake, 

 7000'. Fl. (white). Dec. 5949. 



Distrib. New Guinea (D.S.W., Giriwo River, Janowsky ; N.E.). Tropical 

 Asia and Australia. 



PTEROSTYLTS PAPOANA Rolfe in Kew Bull. 1899, 112 ; J. J. S. in Nova 

 Guinea, xii. (1915) 185, t. Ixi. 99. 



Var. ARFAKENSIS J. J. S., var. nov. 



Caulis c. 4 cm. longus, c. 5-folius. Folia patentia, petiolata, ovata, acuta, basi 

 rotundata, costa media dorso carinata, laxe reticulato-venosa, c. 0'95-2 cm. longa, 

 0-8-1-4 cm. lata; petiolus canalicuktus, cum vagina c. I'l-l'S cm. longus ; folium 

 summuin ellipticum et brevius petiolatum. Inflorescentia erecta, 1-flora, pedunculo 

 c. 9 cm. longo, vaginulis 2 sessilibus erectis bractese similibus c. l-l'l cm. longis 

 donato. Bractea erecta, adpressa, foliacea, ovata, acutiuscula, c. I'lo cm. longa. 

 Flos erectus. Sepalum dorsale erectum, incurvum, valde concavum, inferne 

 longitudine c. O55 cm. gynostemio adnatum, ovatum, sensim longe acuminatum, 

 acutuni, mucronatum, carinatum, c. 9-11-nervium, c. 2*85 cm. longuin, 1-1 cm. 

 latuin. Sepala kteralia lacinia angusta ad pedem gynostemii decurrentia, ultra 

 apicern pedis gynostemii longitudine c. O6 cm. inter se connata, oblique oblonga, 

 longe caudato-acuminata, concava, cauda canaliculata, c. 7-8-nervia, supra apicem 

 pedis gynostemii c. 2 cm. longa, parte lata 1'3 cm. longa, 0'47 cm. lata. Petal a 

 lacinia angusta ad pedem gynostemii decurrentia, oblique lanceolata, acuta, sub- 

 falcata, margine superiore in f partibus supra basin obtusangula et irregulariter 

 marginata, inferne oblique cuneato-angustata, supra basin c. 5-nervia, tota c. 2'3 cm. 

 longa, 0'67 cm. lata, parte pedi gynostemii adnata c. 0'35 cm. longa. LaMlum 

 pedi gynostemii insertum, erectum, apice recurvum, inexplanatum, gynostemio paulo 

 brevius, subovato-lanceolatum, apicem versus sensim angustatum, anguste obtusuin, 

 basi obtusuin, convexum, plica longitudinali supra costa to - prominente subtus 

 canaliculata instructum, papillosum, c. 5-nervium, appendice basilari cum labello 

 angulum obtusuin faciente lineari incurva apice in lacinias c. 3 crenulatas diver- 

 gentes divisa c. 0'27 cm. longa, explanatum c. ,1'175 cm. longum, infra medium 

 Q'325 cm. ktum. Gynostemium erectum, elongatum, gracile, in bene -\ parte 

 supra basin obtusangule incurvum, inferne sepalo dorsali adnatum, bene ^ parte 

 superiore late alatum, alis parallelis e basi semicuneata abrupte oblique quadrangulo- 

 dilatatis, postice in kciniam conspicuam reversam triangukm obtusam productis, 

 margine antico incurvis ciliatisque, angulo antico in appendicem subulatam pro- 

 ductis, cum appendicibus c. 0'625 cm. longis, apice gynosteraii kte semi-elliptico 

 obtuso valde concavo, cum anthera c. 1*5 cm. longum. Anthera erecta, cucullata, 

 quadrangula, selliformis, apice btlobuk cum apiculo brevi obtuso, basi 4-lobula, 

 c. O'lo cm. longa. Stigma c. | partem medianam gynostemii occupans, longi- 

 tudinale, c. 0'43 cm. longum. PCS gynostemii cum gynostemio angulum acutuni 

 faciens, linearis, | partibus inferioribus sepalis lateralibus petalisque adnatus, 

 ceterum liber, c. 0'5 cm. longus. Ovariiim 0-anirulatum, in angulis parcissiuie 

 lontatum, c. l'3o cm. longum; })edicellu.s tenuior, c. 2'7 cm. longus. 



K 



