apex, about 5.4mm. long and 2mm. wide. Lip strongly 
arcuate-recurved with the lower half erect and parallel 
to the column in natural position, sharply 3-lobed near 
the middle, nearly 7.2 mm. long when expanded; lateral 
lobes relatively very small, triangular-dentiform, obtuse 
or acute, incurved; mid-lobe much larger, subquadrate, 
bilobed in front; dise much thickened below, the thick- 
ening developed into a transverse lobulate callus between 
the lateral lobes. Column rather slender, dilated above, 
about 8 mm. high at the back, produced into a sub- 
equally long foot. 
This species is allied to Mavillaria purpurea (Spreng. ) 
Ames & Correll, but differs markedly in the lip which 
lacks a claw and is bilobed in front. 
Junin: Prov. of Tarma, Uteuyacu, F. Woytkowski 21 (liquid material 
supplied by Univ. Calif. Bot. Gard. (Berkeley) culture no. 50.1844) 
(Tyree in Herb. Ames no, 66124 and in Ames liquid coll. ). 
Maxillaria spathulata C. Schweinfurth sp. nov. 
Herba epiphytica, cum rhizomate elongato. Pseudo- 
bulbi distantes, complanato-ovoidei, unifoliati, basi vagi- 
nis duabus conduplicatis foliiferis utrinque circumdati. 
Folia variabilia, ovato-elliptica vel elliptico-oblonga vel 
lanceolata, acuta vel acuminata, sessilia. Flores parvi, 
in vaginarum axillis, subearnosi. Sepalum dorsale lanceo- 
latum, acuminatum. Sepala lateralia oblique et anguste 
triangulari-lanceolata, basi cum columnae pede mentum 
breve formantia. Petala minora, oblanceolato-linearia. 
Labellum paulo infra medium acute trilobatum, expan- 
sum oblongo-spathulatum; lobi laterales parvi, erecti, 
porrecti; lobus medius multo major, rotundato-obovatus, 
leviter retusus; discus inter lobos laterales callo subquad- 
rato retuso ornatus. Columna crassa, in pedem brevem 
producta. 
Plant epiphytic, with an elongate rhizome bearing 
pseudobulbs at remote intervals. Segments of the rhizome 
[ 164 ] 
