123 



latum. Sepala lateralia oblique lanceolata, brevissime acuminata, margine anteriore 

 anguste incurva, 3-nervia, c. 2'1 cm. longa, 0'55 cm. lata. Petala parva, gynostemio 

 adpressa, oblique lanceolato-triangula, sensim acuminata, subfalcatula, apice recurva 

 et convexa, 1-nervia, c. 0'375 cm. longa, bene O'l cm. lata. Labellum immobile, 

 subrectum, leviter sigmoideum, spathulato-lanceolatum, totum c. 1*45 cm. longum, 

 ungue lineari-oblongo, basi lobulis 2 erectis obtusis postice transverse conjui'ctis 

 excavato-concavo, basi postice excavato, c. 0'35 cm. longo, subtus lonf^itudinaliter 

 sulcato, marginibus sulci in lamina in costas parallelas longitudinales aliformes tenues 

 superne evanescentes exeuntibus, lamina anguste elliptica, obtusa, valde convsxa, 

 papillosa. Gynostemium subgracile, curvatum, c. 0'44 cm. longum, ad basin 

 stigmatis infra medium gynostemii callo triangulo lateraliter compresso donatum, 

 apice (filamento) recurvo, cum gynostemio angulum obtusum faciente, triangulo, 

 acuto, concavo, clinandrio concavo, lateribus dilatatis oblique quadrangulis dentatis. 

 Antliera cucullata, connectivo longitudinaliter incrassata. Stigma longitudinale. 

 Pes gynostemii brevis, in callum transversum carnosum obtusissimum in excava- 

 tionem basilarem labelli quadrans incrassatus, subtus infra, callum in partem incurvam 

 anguste oblongam concavam labellum gerentem productus, totus c. 0'13 cm. longus. 

 Ovarium curvulum, 6-sulcatum, c. 0'43 cm. longum ; pedicellus tenuis, c. 0'35 cm. 

 supra basin articulatus, c. 2 cm. longus. 



Hob. Arf'ak Mts., Angi lakes, epiphytic in forest patch by ? lake. 

 Dec. 5GG3. 



This plant differs from B. concolor J. J. S., probably its nearest ally, by 

 its longer leaves, shorter peduncle, larger, differently coloured flowers, and 

 differently shaped petals. 



The sepals are described as brown, the lip shading to yellow. 



BULBOPHYLLUM ( PoLYBLEPHARON) BIRUGATUM J. J. S., Sp. nOV. 



Ehizoma elongaturn, probabiliter dependens, ramosuin, vaginis tubulosis acutis 

 vel acute acuminatis dorso carinatis ad c. 0'6 cm. longis diu persistentibus fere 

 omnino obtectum. Pseudobulbi parvi, spiraliter dispositi, c. 1'5 cm. distantes, 

 f partibus inferioribus rhlzomati adnati, toti c. 0'3-0'35 cm. longi (sicco), parte 

 libera rhizomati adpressa, bene semitereti, truncata, c. O'l cm. longa, 1 -folia. 

 Folium lanceolatum, brevissime acutatum, conico-apiculatum, basi brevissime con- 

 tractum et conduplicatum, costa media supra sulcata, carnosum, maceratum c. 2 cm. 

 longum, 0'5 cm. latum. Inflorescentiae numerosae, ad nodos rhizomatis fasciculate, 

 brevissimaj, 1-ftorse, pedunculo c. O'l cm. longo, vaginula tubulosa ad basin. Bractea 

 oblique cucullata, dorso ad apicem carinata, ovario brevior, c. 0'07 cm. longa. 

 Flos parvus, maceratus c. 0'3G cm. longus, sepalis conniventibus, apice recurvulis. 

 H<'l>(tlum dorsale horizontal, oblongum, obtusum, breviter obtuse conico-apiculatum, 

 concavum, superne vix erosulum, 3-nervium, c. 0'37 cm. longum, 0'15 cm. latum. 

 Sepala lateralia porrecta, cum pede gynostemii mentum subrectanguluin cum ovario 

 angulum obtusum faciens obtusum postice c. 0'13 cm. longum fonnantia, margiue 

 proximo ultra medium conglutinata, oblique triangula, falcata, margine extoriorc 

 rotundata, obtusa, breviter obtuse conico-apiculata, concava, 3-nn-via, tola c. ();}.") cm. 

 longa, 0'17 cm. lata. Pffnln gyoostemio :i(l])rcssa, parallela, oblique oblonga, suj>erne 

 denticuluta, longe suhulalo-aruininata, l-ncrvia, c. 0'3 cm. longa, O'l cm. latu, 



L 



