ORCHIDACE.E 



fact, it applies only to L. teretifolia of all the species from the 

 Philippines that I have seen, and taken in conjunction with his 

 description of the labellum of L. valida, arouses a strong suspi- 

 cion in my mind that L. teretifolia and L. valida are conspecific, 

 or that my conception of L. teretifolia is erroneous. From both 

 species L. Foocworthii and L. Ramosii are clearly distinct, through 

 the broad petals, which in L. Foxvcorthii are oblong-lanceolate 

 and in L. Ramosii unequally ovate. 



82. ARACHNIS Bl. 



About fifteen species are referable to this genus. Only one species 

 has been discovered in the Philippines. Also represented by spe- 

 cies in Annam, Borneo, New Guinea, Java, and Celebes. 



1. Arachnis Lyonii sp. nov. Radices elongatae, vaginas perfo- 

 rates, vermiformes. Caules erecti, rigidi, ± 1 cm. in diametro, te- 

 retes, usque ad apicem complanatum,internodiis 2.5-3 cm. longis. 

 Folia patentissima, coriacea, ligulata, oblonga, ad apicem inae- 

 qualiter obtuse biloba, usque ad 12 cm. longa, 2.5 cm. lata. Va- 

 ginas internodia asquantes, tubulosas, in sicco valde transverse 

 rugosaa, prope apicem leviter dilatataa. Inflorescentise vaginas ad 

 basim perforantes, breves, circiter triflorse, laxae. Pedunculo val- 

 diusculo, 3-7 cm. longo, vaginis tubulosis tecto, rhachide ± 3 cm. 

 longa. Bracteaa flores subtendentes breviter tubulares, in sicco 

 scariosaa, circiter 3 cm. longae. Flores circiter 3 cm. in diametro, 

 carnosi, flavidi, bruneo-maculati, sepalis petalisque patentissi- 

 mis. Sepala lateralia spathulata, coriacea, obtusa, 1.8 cm. longa, 

 8 mm. lata, ad basim vix 4 mm. lata, ad margines undulata. Se- 

 palum dorsale unguiculatum, ellipticum, obtusum, circiter 22 

 mm. longum, prope apicem 9 mm. latum. Petala coriacea, falcato- 

 spathulata, obtusa, 1.8 cm. longa, supra medium 1 cm. lata. La- 

 bellum parvum, circiter 6 cm. longum, carnosum, intus ad basim 



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