ORCHID ACE.E 



very dissimilar flowers. The labellum suggests S. appendiculatus 



J. J. Sm., but the elongated sac is a differentiating character. 



The labellum is a very interesting structure and might well be 



described as five-lobed; the basal lateral lobes being erect, more 



or less membranaceous and suddenly dilated above the middle; 



the apical lateral lobes being membranaceous and linear-oblong; 



the terminal or fifth lobe being more or less rigid and apparently 



thickened at the tip, when fresh. 



Philippines, Leyte, Tacloban, C. A. Wenzel 0968, February 11, 1916. 

 Epiphyte in forest. Flower yellow and white. At sea level. 



SPIRANTHES, L. C. Rich, 



Spiranthes bicaudata Ames sp. nov. Radices fasciculatae, 

 fusiformes, carnosulae, plus minusve 4 cm. longae, 7 mm. cras- 

 sae, foliis radicalibus ut videtur, paucis, laminis foliorum usque 

 ad 7 cm. longis, 17-27 mm. latis, membranaceis, in sicco charta- 

 ceis, flavidis, ellipticis, utrinque leviter attenuatis, acutis, quin- 

 quenerviis, petiohs usque ad 3 cm. longis. Scapus erectus, gra- 

 cilis, cum racemo usque ad 22 cm. longus, infra racemum brac- 

 teis setaceis octo, illis prope basim scapi vaginantibus. Racemus 

 elongatus, multiflorus, plus minusve 11 cm. longus, plus minusve 

 1.5 cm. crassus per medium. Bracteae inflorescentiae lineari-lan- 

 ceolatae, plus minusve 7 mm. longae, scariosae, setaceae, quam 

 pedicellus cum ovario longiores. Pedicellus cum ovario glandu- 

 loso-pubescens, usque ad 8 mm. longus. Flores albidi,minuti,3-4 

 mm. longi. Sepala lateralia ligulata, 4 mm. longa, acuta, apice 

 leviter incrassata, uninervia, glabra. Sepalum dorsale simile, 4 

 mm. longum, vix 1 mm. latum trans medium, uninervium, obtu- 

 sum, prope apicem leviter carinatum vel incrassatum. Petala 

 quam sepalum dorsale bre^dora, 2.5 mm. longa, leviter sigmoidea, 

 uninervia. Labellum 3 mm. longum, 1 mm. latum trans medium, 



[ 126 ] 



