ORCHIDACEiE 



nusve 7 cm. longus, bracteis nervosis, setaceis obsessus. Racemus 

 densiflorus, 12.5 cm. longus, in sicco usque ad 22 mm. per me- 

 dium. Bracteae inflorescentiae in sicco scariosae, triangulari-line- 

 ares, valde acuminatae, setaceo-acutae, trinerviae, plus minusve 

 4.5 mm. longae. Pedicellus cum ovario 5-6 mm. longus, gracilis. 

 Flores albidi. Sepala lateralia 8 mm. longa, usque ad apicem in 

 laminam lineari-lanceolatam connata, in sicco conspicue biner- 

 via. Sepalum dorsale 7 mm. longum, 5 mm. latum, valde conca- 

 vum, ellipticum, obtusum. Petala elliptico-lanceolata, acuta, 7 

 mm. longa, usque ad 2.5 mm. lata, basi leviter cuneata. Labellum 

 sagittatum, basi carinato-callosum, cum ungue 6 mm. longum, 

 3 mm. latum trans basim; unguis 1 mm. longus. Columna tere- 

 tiuscula, glabra, 3 mm. longa, rostello in gibbum incrassato. Pol- 

 linia generis. 



The large flowers in a crowded drooping raceme give to this 

 species a very distinct aspect from that of the other Central 

 American species. 



Panama, Marraganti and vicinity, R. S. Williams 977, April 3-9, 1908. 

 10-200 feet altitude. (Type in Herb. N. Y. Bot. Gard.) 



OBERONIA Lindl 



Oberonia linearifolia. Ames sp. nov. Aff. O.neglectae Schltr. 

 Herba parvula, radicibus fibratis, albidis, flexuosis. Caules abbre- 

 viati, plus minusve 1 cm. longi, vaginis foliorum omnino obtecti, 

 complanati. Folia quinque ad decem, anguste ensiformia, linearia 

 a latere visa, patentia, acuta, disticha, prope basim vaginantia, 

 2.5-6 cm. longa, 1.3 mm. lata, quam racemus multo breviora, 

 oblique erecta. Racemus floribus in genere inter minimos, 5-7 

 cm. longus, gracilis, 2 mm. per medium, densiflorus. Bracteae 

 infra racemum scariosae, lineari-setaceae, arete appressae Brac- 

 teae inflorescentiae triangulares, acuminatae, valde acutae. Se- 



[ 113] 



