a pair of subquadrate-oblong lobules. Pedicellate ovary 
slender, about 3.8 cm. long. 
Ypidendrum pinniferum suggests several other spe- 
cies. It differs from E.cnemidophorum Lindl. in having 
an abbreviated subsessile inflorescence and much broader 
mid-lobe of the lip. It is dissimilar to #. HMdwardsu 
Ames in having shorter broader leaves, a nearly sessile 
inflorescence and much larger flowers. 
‘The specific name, meaning fin-bearing, is in allusion 
to the lobes of the lip (particularly the mid-lobe) which 
simulate the fins of a fish. 
Costa Rica,’ ‘Matamba’ (lugar situado entre Pirris y San Jerén- 
imo). 14-V-1936.’’ Alfredo Brade 335 (Tyre in Herb. Ames No. 44326. ) 
Maxillaria campanulata C.Schweinfurth sp. nov. 
Herba magna, crassa, caulescens. Caulis vaginis disti- 
chis dense imbricantibus omnino obtectus. Pseudobulbi 
distantes, valde complanati, anguste ellipsoidei, mono- 
phylli. Folia ligulata. Inflorescentiae numerosae, uniflo- 
rae, singulae in vaginarum axillis. Flos nutans, campanu- 
latus. Sepala oblanceolato-oblonga, acuminata. Petala 
similia, minora. Labellum parvum, apice trilobatum; 
loborum lateralium pars libera porrecta triangulari-ovata, 
rotundata; lobus medius semiorbicularis, concavus; dis- 
cus in medio callo apice trilobulato ornatus. 
Plant apparently tall and stout (stem incomplete in 
our specimen), caulescent. Pseudobulbs ancipitous in 
the dried specimen, narrowly ellipsoid, about 4.5—-7 em. 
long, up to 2.4 ¢m. wide, monophyllous, distichously 
surrounded at base by two or three pairs of spreading 
leaf-bearing sheaths, about 17.5 cm. apart on the stem. 
Stem entirely concealed by distichous imbricating strong- 
ly complanate sheaths of which those on the younger 
growths bear small ovate-oblong conduplicate deciduous 
blades. Leaves ligulate, gradually narrowed into an in- 
[ 94 | 
