424 A. CoGNiAUx: 



Eivicres, Bassin-Bleu, alt. 500 — 1000 m.: Duss n. 3341; Dominica: 

 Henslow, Imraj, Kamage, Eggers n. 90; Martinique ad Calebasse, 

 Ajoupa-Bouillon, Camp de l'Alma, Lorraiu, Rivicre Roche, Deux- 

 Choux: Duss n. 390, 391, 395", 4492, 4654. — Guiana anglica. 



159. Pleiirotliallis Helenae Fawc. etRendle: pusilla, caespitosa, 

 glaberrima, tota 3 — 5 cm. alta; caulibus brevissirais, vaginis brevibus 

 ochreatis acutis; foliis oblanceolatis, basi in petiolum angustatis, cum 

 petiolo 10 — 15 mm. longis; pedunculo communi filiformi, paucifloro, 

 quam folia duplo longiore; bracteis ochreatis, acutis; floribus longo 

 pedicellatis; sepalis liberis, patentibus, ovatis, caudatis, margine inte- 

 gerrimis, circiter 4 mm. longis; petalis subrhomboideis, superne fim- 

 briatis, apice caudatis, quam sepala Yg brevioribus; labello quam 

 petala subduplo breviore, trilobato, lobis lateralibus late rotundatis, 

 superne fimbriatis, lobo intermedio ovato, obtuso; columna cum 

 anthera conica labello aequilonga; Capsula obovoidea. 



Pleurothallü Helenae Fawc. et Renale in Journ. of Bot. XLVII 

 (1909) p. 4, Orch. of Jain. ined. t. 9 f. 9-14. 



Flores pallide virides, labello chermesino variegato, columna cherme- 

 sino lineata. Fl. VIT, fr. YIII. 



Hab. in Jamal ca ad truncos arborum secus Mabess River, 

 1150 m. alt: Harris. 



160. rieurothallis mucroiiata Lindl. perpusilla, caespitosa, 

 glaberrima; caulibus fere nullis; foliis minutissimis, submembranaceis, 

 oblonge -subspathulatis, apice obtusis vel rotundatis et breviter mucro- 

 natis, basi in petiolum longiusculum angustatis, tenuiter marginatis, 

 superne subtiliter serrulatis; pedunculo communi solitario, tenuiter 

 capillari, apice 1 — 3-floro, folio multo longiore; bracteis acuminatis, 

 pedicellis multo brevioribus; floribus longiuscule pedicellatis, segmentis 

 hyalinis; sepalis aequilongis, ovato -lauceolatis, longiuscule acuminatis, 

 subtiliter trinervulosis, margine integerrimis, lateralibus angustioribus 

 usque ad basin liberis; petalis late oblongis, subabrupte acutis, uni- 

 nerviis, prope apicem minute denticulatis, sepalis subdimidio breviori- 

 bus; labello vix unguiculato, sepalis satis breviore, subtiliter papilloso, 

 ambitu late ovato, profunde trilobato, lobis lateralibus anguste trian- 

 gulari-falcatis, acutissimis, margine leviter laciniatis, lobo terminali 

 producto, late linguiformi, margine integerrimo, apice subrotundato, 

 longitudiualiter ad medium incrassato. 



Pleurothallis nmcronata Lindl./ in Meui. Amer. Acad. n. s. VIII 

 (1861) p. 219 (nomen tantum); Griseb. Caf. p. 258 (nomen) ; Sauv. 

 Fl. Cuh. p. 226 (nomot). 



Folia patula vel erecto-patula, rigidiuscula, petiolo filiformi, 2 — 3 mm. 

 longo; lirobo subplano, 4 — 5 mm. longo, l^j^ — 21/, mm. lato. Pedun- 



