KKW 01-! XOTKWOl^TllY ORCHIDS 
Closely allied lo Pleurothallis Purpusii Schltr., from 
which it differs conspicuously in the broader leaves and 
hispid cauline sheaths. It is a member of the LepanthC 
formes section of the genus. 
Panama, Province of Chiriqui, “ Cerro Norquita,” 
C. W. Powell 311. Grows in damp, shady places. Flowers 
in June. 500()“60()0 feet altitude. (Type in Herb. Ames 
No. 26928.) 
Pleurothallis monstrabilis Ames sp. nov. Rhizoma 
longe repens, vaginis scariosis tubulatis instructum. Radices 
elongatae, fibratae, glabrae, patentes. Caules secundarii 
valde abbreviati, bractea vaginanti obtecti, monophylli. 
Folium anguste lanceolatum, apice bidentatum, apiculatum, 
valde carnosum, subtus rotundatum, supra late sulcatum. 
Pedunculus folio longior, gracilis, uniflorus, ex axilla fold 
oriens, bractea spathacea arete appressa subLentus, su¬ 
pra basim bractea infundibuliformi. Sepala lateralia an¬ 
guste lanceolata, acuminata, apice subcandata et valde in- 
crassaLa, plus minusve cohaerentia, trinervia. Sepalum 
dorsale simile sed angustius, apice subcaudatum et in- 
crassatum, basi concavum. Petala lineari-lanceolata, supra 
medium incrassata, margine obscure cellulari-glandulosa, 
uninervia. Labellum oblongo-lanceolatum, acutum, a latere 
visum leviter sigmoideum, trinervium, prope basim bi- 
carinatum, callo obtuse Iriangulari prope medium in¬ 
structum. Columna carnosa, clinandrio integro. 
Roots up to 17 cm. long, fibrous, whitish, smooth, 
spreading. Rhizome elongated, creeping, 1 mm. thick, 
green, clothed with rather closely oppressed scarious bracts. 
Secondary stems much abbreviated, 4 mm. long, about 
1.5 mm. in diameter, approximate, arising in succession from 
fhe upper side of the rhizome, monophyllous, concealed by 
an ample scarious sheath. Leaf 2-2.5 cm. long, 3-4 mm. 
wide, narrowly lanceolate, bidentate at the tip, conspicu¬ 
ously apiculate, rounded beneath, widely sulcate above, 
very fleshy. Peduncle up to 3.5 cm. long, with a closely 
oppressed sheath at the base and with an infundibuliform 
bract above the base. Pedicel with the ovary about 4 mm. 
6:5 
