NEW OR NOTEWORTHY ORCHIDS 
long. Labellum enveloped by the sepaline sac, erect in 
natural position making an acute angle with the column 
foot, when expanded broadly ovate in outline, distinctly 
3-lobed two-thirds the distance from the base, 5.1 mm. long, 
about 4 mm. wide; lateral lobes semiobovate, broadly 
rounded above; middle lobe triangular-ovate, 1.5-1.7 mm. 
long and equally wide at the base, obtuse, apical portion 
somewhat carinate-thickened beneath. Disc with a trans¬ 
verse oblong fleshy retuse callus extending across the base 
of the middle lobe. Column short, stout, 2 mm. long, a 
subequally long foot extending at an obtuse angle. Ovary 
prominently several-winged. 
Ornithidium Alfaroi is closely allied to 0. anceps 
Reichb. f., but differs in its larger growth, broader obtuse 
leaves, deeply connate lateral sepals with overlapping free 
portions and relatively short lip. 
The description was drawn from dried specimens, while 
the floral measurements were taken only from the better 
preserved flowers of the type collection. 
Costa Rica, La Fuente, A, Alfaro 227, December 8, 
1925, 1200 meters altitude. “Sepals and petals white, lip 
orange yellow.” (Type in Herb. Ames No. 30960): Province 
of San Jos6, oak forest near Quebradillas, about 7 km. 
north of Santa Maria de Dota, Paul C. Standley 43054, De¬ 
cember 24, 1925. About 1800 meters altitude. “On tree.” 
(Flowers very passe): Province of San Jose, Vicinity of El 
l^opey, Standley & Juvenal Valerio 43996, December 26, 
1925-January 3, 1926. 1700 meters altitude. “On tree.” 
Ornithidium simulans A. & S. sp. nov. Herba epi- 
Phytica, caulescens. Caules vaginis densis distichis im- 
bricantibus omnino obtecti. Pseudobulbi cylindracei, an- 
cipites vel valde complanati, plus minusve remoti, mono- 
Phylli. Folia ligulata vel oblongo-lanceolata. Flores parvi, 
in glomerulis prope pseudobulbi basim dispositi. Sepala 
lateralia oblique ovata, prope basim connata. Sepalum dor- 
sale elliptico-ovatum, concavum. Petala oblongo-lanceolata. 
Labellum cum columnae pede continuum; lamina rhombico- 
ovata, trilobata. 
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