NEW OR NOTEWORTHY ORCHIDS 
leaf is larger with a noncrispate margin. Malaxis linguella 
(Reichb. f.) Ames, a native of Mexico, but with a very 
different labellum, is similar vegetatively. [Fig. l.\ 
Costa Rica, Concavas, C. H, Lankester 346. Flowers 
apricot-yellow, leaf and rachis yellowish oil-green. (Colors 
according to Ridgway’s standards. PI. V.) (Type in 
Herb. Kew.) 
Appendicula irigensis Ames sp. nov. Caules elongati, 
ramosi, foliosi, vaginis foliorum omnino obtecti. Folia 
disticha, elliptico-lanceolata, apice obtuse bilobulata mu- 
crone rigido interjecto. Pedunculi terminales et later- 
ales. Racemi folia subaequantes, bracteis flores sub- 
tendentibus elongatis linearibus. Sepala lateralia triangu- 
laria, acuta, mentum obtusum formantia, extus per medium 
carinata. Sepalum dorsale ovato-lanceolatum, concavum. 
Petala oblonga, margine obscure erosa, apice nonnihil in- 
conspicue apiculata. Labellum supra medium in laminam 
suborbicularem minute erosam expansum, basi concavum, 
erectum. Callus in disco. Columna brevis, rostello oblique 
erecto, in apicem excisum producta. 
Stems branching, 30 cm. or more long, leafy, the lower 
leaves soon deciduous. Leaves distichous, numerous, 3-5 
cm. long, 5-9 mm. wide, elliptic-lanceolate, bilobed at the 
apex with a mucro between the lobes; at base each leaf is 
articulated with a tubular sheath, the sheaths persistent and 
concealing the stem. Peduncles terminal or lateral, with the 
raceme up to 3 cm. long, shorter than or equaling the leaves. 
Bracts of the raceme up to 5 mm. long, spreading, linear. 
Lateral sepals 3 mm. long, triangular, acute, forming a 
prominent obtuse mentum, carinate along the middle nerve 
on the outside. Mentum 2 mm. long. Dorsal sepal 4 mm. 
long, ovate-lanceolate from a broad base, concave. Petals 
3 mm. long, about 1 mm. wide, oblong, obtuse, obscurely 
apiculate, margin minutely erose-dentate. Labellum sub- 
orbicular above, 3 mm. wide, about 4 mm. long, lower portion 
concave, quadrate. Disc with a lamelliform callus at the 
base of the orbicular lamina. Callus posteriorly rounded, in 
5 
