ORCHIDACE^ 



Pedicellus cum ovario plus minusve 2 mm. longus. Floras 5 mm. 

 trans medium, purpurei. Sepala lateralia 2 mm. longa, vix 3 mm. 

 lata, late ovata, vix obtusa, trinervia. Sepalum dorsale 2.5 mm. 

 longum, 3 mm. latum, late rotundato-ovatum, trinervium. Pe- 

 tala cuneata, 1 mm. longa, plus minusve 1 mm. lata prope apicem, 

 trinervia, apice valde incrassata, glabra vel exiliter papillosa. 

 Labellum 1 mm. longum, plus minusve 1 mm. latum, elliptico- 

 reniforme, apiculatum, apiculo triangulo, acuto, erecto; discus 

 callo permagno ornatus. Columna brevis, apicem versus con- 

 spicue dilatata. 



In habit similar to S. coiloglossa Schltr., but different in hav- 

 ing shorter stems and a reniform-apiculate, not ovate obtuse lip. 



Panama, Cana and vicinity, R. S. Williams 972, April 27, 1908. On 

 trees, flowers purplish. 6000 feet altitude. 



Stelis pleurothalloides A vies sp. nov. Herba epiphytica, 

 usque ad apicem racemi plus minusve 22 cm. alta. Radices car- 

 noso-fibratae, albidae, glabrae, in sicco nitidae, plus minusve 6 

 cm. longae, usque ad 1 mm. in crassitudine. Caules plus minusve 

 8 cm. longi, vaginis elongatis, laxe appressis omnino obtecti, mo- 

 nophylli. Folium valde coriaceum, oblongo-ellipticum, 6-6.5 cm. 

 longum, in sicco usque ad 1.5 cm. latum, apice breviter apicula- 

 tum, nervo medio subtus prominenti, conspicue marginatum, in 

 petiolum brevem contractum. Pedunculus singulus, cum racemo 

 plus minusve 16 cm. longus, basi vagina 1.8 cm. longa inclusus. 

 Racemus usque ad 12 cm. longus, multiflorus, 1 cm. in diametro. 

 Flores plus minusve 4 mm. inter se distantes, textura carnosi, 

 in sicco 4 mm. longi, straminei. Bracteae inflorescentiae plus 

 minusve 3 mm. longae, scariosae, oblique infundibuliformes, 

 rachidem amplectentes, quam pedicellus cum ovario breviores, 

 acutae. Pedicellus cum ovario plus minusve 5 mm. longus, valde 



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