TROPICAL AMPIRICAN ORCHIDS 
Pleurothallis divexa Ames nom. nov. 
Pleurothallis dichotoma Ames Sched. Orch. 6 (1923) 
58, non Schltr. in Fedde Report. Beihefte 9 (1921) 140. 
[Plate 5.] 
Pleurothallis hondurensis Ames sp. nov. Rhizoma 
repcns. Caules secundarii approximati vel inter se dis- 
tantes, elongati, ascendentes, paucivaginati, monophylli. 
Folium valde coriaceum, anguste lanceolatum, utrinque at- 
tenuatum, apice acutum, pedunculis fasciculatis multo 
longius. Pedunculi fasciculati ex axilla fold orientes, plus 
minusve octollori. Bracteae inflorescentiae hyalinae, in- 
fundibuliformes. Sepala lateralia in laminam lanceolatam 
valde concavam eohaerentia, apice laminae divisa. Se- 
palum dorsalc lineari-ol)longum, conspicue elongatum, tri- 
nervium. Petala oblonga, acuta, supra medium plus mi¬ 
nusve dilatata, margine paucidentata, apice valde acuta, 
late purpureo-striata per medium. Labellum carnosum, 
utrinque prope basim unguis lobulatum, supra ungucm 
valde truncatum, in laminam oblongam acutam trinerviam 
expansum, nervis subtus prominentibus. Columna elongata, 
apice obscure fimbriata. 
Roots coarsely fibrous, whitish, spreading. Rhizome 
elongated. Secondary stems 5-12 cm. long, 1-1.5 mm. 
thick, partly concealed by several tubular sheaths, the up¬ 
permost one very much elongated. Leaf coriaceous, 7.5-10 
cm. or more long, 1.3-1.5 cm. wide above the middle, nar¬ 
rowly lanceolate, acute, Ipnger than the racemes. Peduncles 
fasciculate in the axil of the leaf, enclosed at the base by a 
closely oppressed sheath, with the raceme 4-5 cm. long, 
rather stout, bearing about eight fleshy flowers. Bracts of 
the raceme 1.5-2 mm. long, scarious, infundibuliform, acute. 
Pedicel with the ovary about 3 mm. long. Lateral sepals 
yellowish striped with purple, 9 mm. long, coherent almost 
to the apex, forming a lanceolate 6-nerved lamina; nerves 
prominent on the outer surface, the central one of each sepal 
produced at the tip into a distinct keel. Dorsal sepal 1 cm. 
long, 1 mm. wide near the middle, oblong, acute, 3-nerved, 
with the nerves purplish and prominent. Petals 3 mm. long. 
20 
