ORCHIDACEM 259 



apicemque fastigata, 3-nervia, 1.7 cm. longa. Labellum 1.7 cm. 

 longum, panduraturn, ecallosum, apiculatum, breviter unguicula- 

 tum, nervis principalibus tribus, nervis lateralibus multiramosis. 

 Apex columnce crassae acute dentatus. 



This very distinct species I have assigned to the genus Spiran- 

 thes, although in some respects its characters agree with the generic 

 details of Sauroglossum. 



Type (no. 332574 in U. S. Nat. Herb.) from near El Salto, State 

 of Durango, Mexico. July 12, 1898, E. W. Nelson (no. 4545). 



PHYSURUS Rich. 



P. POLYGONATUS sp. nov. ; Ames in J. D. Smith PI. Guate- 

 mal. pt. VII., no. 7678 (1905) (nomen). Herha circa 26 cm. alta, 

 gracilis, infra mediam foliosa. Caulis supra pubescens. Folia 4, 

 elliptico-lanceolata, acuminata, acuta, glabra, in herba eadem 3-7 

 cm. longa et 1.5-3 cm. lata. Petiolus 2-3 cm. longus, ad basim 

 dilatatus et inflatus ubi caulem vaginat. Liflorescentia racemosa. 

 Flores infimi 8 mm. distantes. Bractece lanceolatse, acuminata?, 

 7 mm. longse, ovarium pubescens excedentes. Flores 20 vel plures, 

 cum calcare 5 mm. longi ; calcar 2 mm. longum. Sepala lateralia 

 oblonga, obtusa, 1-nervia, 4 mm. longa, circa 2 mm. lata. Sejjcdum 

 dorsale lineari-lauceolatuni, lateralibus angustius. Petala lineari- 

 spathulata, 1-nervia, circa 4 mm. longa. Labellum ab apice calcaris 

 ad extremum lobum terminalem 5 mm. longum ; lobus terminalis 

 subreniformis, mucronatus, 2 mm. longus, 3 mm. latus, margine 

 minutissime denticulato. 



Type in hb. Ames, from Cubilquitz, Depart. Alta Verapaz, Gua- 

 temala, alt. 350 m., April, 1900, H. von Tuerckheim (no. 7678). 

 The type consists of a single specimen. The flowers appear to 

 have been pink or salmon-colored. 



P. PURPUREUS sp. nov. ; Ames in J. D. Smith PI. Guatemal. 

 pt. VII., no. 8000 and no. 8759 (1905) (nomen). Aff. P. bifalci 



