ORCHIDACEiE 



nusve 5 mm. lata, oblique erecta, anguste ensiformia, equitantia, 

 folia exteriora quam folia interiora multo breviora, 2-4.5 cm. 

 longa. Pedunculus quam folia brevior, 6-8 cm. longus, 2-4 mm. 

 per medium, flexuosus vel arcuatus, longitudinaliter plurialatus. 

 Bracteae infra inflorescentiam lineares, acuminatissimae, conges- 

 tae, numerosae. Bracteae inflorescentiae plus minusve 2 mm. 

 longae, integrae, lineares, apice longe acuminatae, acutissimae, 

 flores excedentes. Flores verticillati, verticillis plus minusve 2 

 mm. inter se distantibus. Pedicellus cum ovario 1 mm. longus, 

 subgracilis, glaber. Sepala lateralia .75 mm. longa, .25 mm. lata 

 trans basim, late triangulari-ovata, acuta, pellucida, reflexa. Se- 

 palum dorsale simile. Petala .5 mm. longa, vix .25 mm. lata, el- 

 liptica, apice rotundata, margine crenato-dentata. Labellum .5 

 mm. longum, .25 mm. latum trans lobos laterales, conspicue tri- 

 lobatum ; lobi laterales alte et inaequaliter quadri- vel quinque- 

 dentati, patentes, .25 mm. longi; lobus medius .25 mm. longus, 

 e basi oblonga leviter dilatatus, in lobulos duos, divaricates 

 productus. Columna minuta, apice valde dilatata, pellucida. 



Although much more slender in all its parts and with much 

 smaller flowers, this species is closely allied to O. cylindrica 

 Lindl. 



Philippines, Mindanao, Province of Surigao, Placer, C. A. Wenzel 1030, 

 July 16, 1916. Epiphyte in forest. Flowers light green. 150 meters altitude. 



PLEUROTHALLIS R. Br. 



Pleurothallis consimilis Ames sp. nov. Herba epiphytica. 

 Rhizoma repens, in sicco curvatum et angulatum, vaginis in 

 fibras solutis vestitum, radicibus flexuosis, glabris, maxima parte 

 sub caulibus secundariis. Caules secundarii 1-1.5 cm. inter se 

 distantes, plus minusve 2 cm. alti, valde compressi, prominen- 

 ter canaliculati, uniarticulati, folio breviores, dimidio basali va- 



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