ORCHIDACE^ 



E. Killipii fere aequimagni. Sepala lateralia 6.25 mm. longa, 

 2 mm. lata trans medium, oblonga, obtusa, conspicue uninervia, 

 extus glanduloso-pubescentia. Sepalum dorsale simile, 5.5 mm. 

 longum, 2 mm. latum. Petala 6 mm. longa, 2 mm. lata, oblongo- 

 spathulata, obtusa. Labellum 7 mm. longum, marginibus incur- 

 vum, apice dilatatum, deflexum, reniforme vel obtuse crescenti- 

 forme, 1 mm. longum, 3 mm. latum, obscure mucronatum, mi- 

 nute papillosum. Calcar 3 mm. longum, obtusissimum, intus squa- 

 mis quatuor verruciformibus, breviter carinatis ornatum. Co- 

 lumna 3 mm. longa, rostello profunde bipartito, anthera cordata, 

 acuminata, acuta. Ovarium glanduloso-pubescens. 



A rather robust plant among the Mexican and Central Amer- 

 ican species of the genus, with flowers that suggest in size the 

 flowers oi E. Killipii Ames and E, vesicijera (Reichb. f.) Ames. 

 Rhizome stout with a single root at each node, internodes 2.5 

 cm. long. Just below the leafly portion of the stem there are 

 three or four scarious whitish or yellowish tubular sheaths, about 

 12 mm. long. Leaves more or less crowded near the ground; 

 leafy part of the stem 5 cm. long, concealed by the sheathing, 

 loosely appressed bases of the spreading leaves. Leaves five, 

 ovate-lanceolate, acuminate, acute, about nine-nerved, from stud- 

 ies of dried material apparently variegated or mottled when fresh. 

 Peduncle with whitish glandular pubescence, with three bracts 

 below the raceme, the bracts whitish, obliquely truncate, acute, 

 with three prominent nerves. Raceme loose flowered, not unlike 

 the raceme oi E. plantaginea (Lindl.) Fawc. & Rendle, but with 

 slightly larger flowers. The apical lobe of the labellum is sharply 

 deflexed and minutely papillose. Within the sac, on the anterior 

 wall, alternating with the three main nerves are four calli, the 

 two outer ones just below the middle of the sac, the two inner 



ones near the base of the sac. 



[73] 



