CENTRAL AMERICAN ORCHIDS 
Costa Rica, Estrella de Cartago, C. H. Lankester & 
Alfredo Sancho 396, January 10, 1923. Radiating lines of 
labellum burnt-lake. Sepals and petals very pale baryta- 
yellow. Callus of the labellum empire-yellow. (Colors ac¬ 
cording to Ridgway.) (Type in Herb. Ames No. 23733.) 
Dichaea Lankesteri Ames sp. nov. Herba epiphytica. 
Caules dense foliati. Folia decidua, linearia. Flores singuli e 
foliorum axillis orientes. Pedunculus tenuis, prope basim 
vagina pellucida vestitus, infra ovarium bibracteatus. 
Ovarium dense setulosum. Sepala lateralia triangulari-lance- 
olata, longe acuminata, acuta, concaviuscula. Sepalum 
dorsale simile, apice deflexum. Petala anguste lanceolata, 
acuminata, acuta. Labellum e basi cuneata valde dilatatum, 
utrinque acutangulum, angulis plus minusve productis valde 
retrorsis, apice acuminatum, acutum. Discus ecallosus. 
Gynostemium crassiusculum, breviter pubescens. 
Roots fibrous, spreading, whitish. Stems more or less 
caespitose, up to 14 cm. high, densely foliose, complanate, 
entirely concealed by the sheathing bases of the deciduous 
leaves, the lower portion defoliated at anthesis. Leaves up 
to 4.5 cm. long, about 3 mm. wide below the middle, spread¬ 
ing, decurved, distichous, linear, tapering gradually toward 
the acute tip, more or less membranaceous. Flowers shortly 
pedicellate, arising singly from the axils of the leaves. Pe¬ 
duncle slender, with an elongated sheath near its base and 
two more or less hyaline bracts near its summit, one of the 
bracts linear-triangular 5 mm. long, the other bract broadly 
oval concave and 5 mm. long. Ovary abbreviated, densely 
setulose. Lateral sepals about 8 mm. long, 3.5 mm. wide, 
triangular-lanceolate, acuminate, acute, the tip sharply bent 
downward. Dorsal sepal similar to the laterals. Petals 6.5 
mm. long, narrowly lanceolate, acuminate, acute, strongly 
concave at the base. Labellum 6 mm. long, unguiculate, 
claw cuneate, dilated above the claw into a round-triangular 
lamina which is about 5 mm. wide across the base, with an 
acute angle on each side which is strongly retrorse, acuminate, 
acute at the apex, the tip thickened and deflexed. Disc 
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