ORCHIDACE^ 



petals and much larger lip. B. recurvum Lindl. has pendulous 

 scapes and a differently formed flower with obovate petals. 



KiAU, Clemens 384-^ December 1915. " Flower white with black tooth." 



26. Bulbophyllum (§ Racemosae) rhizomatosum A. &^ S. 

 sp. nov. Herba gracilis. Rhizoma longissimum, repens, gracile, 

 vaginis scariosis vel fibris vaginarum obtectum. Pseudobulbi 

 minuti, reclinati, cylindracei, monophylli. Folium ellipticum vel 

 elliptico-oblongum, acutum vel acuminatum, in petiolum per- 

 brevem angustatum, subcoriaceum. Scapi e basi pseudobulbi vel 

 e rhizomate medio inter pseudobulbos exorientes, foUa multo 

 superantes, vaginis perpaucis tubularibus inconspicuis remotis 

 praediti. Racemus laxiflorus. Perianthium in sicco pellucidum. 

 Sepala lateralia late triangularia, apicibus longe caudatis subito 

 terminantia, mentum saccatum formantia. Sepalum dorsale 

 lanceolatum, apice caudato. Petala minuta, ovata, acuta. Label- 

 lum in positu naturali decurvum lateribus inferioribus erecto- 

 conduplicatis, lateribus anterioribus valde reflexis; lamina ex- 

 pansa oblonga simplex obtusa vel subacuta, parte inferiore subtus 

 carinato-incrassata. Gynostemium minutum, pede apice unci- 

 formi instructum. 



Rhizome very long and creeping (or pendant?), slender, ter- 

 ete, about .75 mm. thick, concealed by scarious imbricating 

 sheaths that become fibrous or by the copious fibres of sheaths. 

 Roots numerous in the lower portion, sparse and scattering 

 above, very slender, fibrous, long, somewhat branched, finely 

 puberulent, about .25-3 mm. thick. Pseudobulbs minute, about 

 2.5-3.5 mm. long, cylindric, finely rugose in the dried speci- 

 men, reclining, monophyllous, surrounded by the long fibres of 

 sheaths. Leaf about 3.7-6.25 cm. long, 1-1.5 cm. wide (the im- 

 mature leaves much smaller), elliptic to elliptic-oblong, acute 



or acuminate, cuneate-narrowed to a very short sulcate petiole, 



[ 194. ] 



