NEW OR NOTEWORTHY ORCHIDS 
Costa Rica, Province of Guanacaste, El Silencio, near 
Tilaran, Paul C. Standley & Juvenal Valerio 44672, January 
13, 1926. About 750 meters altitude. “On tree; flowers 
green and white.” (Type in Herb. Ames No. 33213.) 
Systeloglossum acuminatum A. & S. sp. nov. Herba 
graminea. Radices elongatae. Rhizoma repens. Pseudo- 
bulbi vaginis distichis confertis foliiferis inferne obtecti. 
Folia oblongo-linearia. Scapi axillares. Racemi laxe dis- 
tichiflori. Sepala lateralia in laminam lanceolatam acriter 
bidentatam connata. Sepalum dorsale lanceolatum, acumina¬ 
tum. Petala oblique lanceolato-triangularia. Labellum ad 
columnae basim affixum, elliptico-subquadratum, bilobatum. 
Plant grassy, about 19-30 cm. high. Rhizome creep¬ 
ing, woody, entirely concealed by imbricating fugacious 
sheaths. Roots fibrous, numerous, elongate, relatively stout, 
glabrous. Pseudobulbs strongly ancipitous, narrowly cylin- 
dric to clavate-cylindric, monophyllous, 2.2 cm. long or 
more, 3.5-6 mm. in diameter above the middle in the dried 
specimen, finely rugose-striate, more or less concealed by 2-3 
pairs of distichous sheaths which are leaf-bearing, imbricat¬ 
ing and conduplicate. Leaves oblong-linear, up to 25 cm. 
long and 1.3 cm. wide (the immature blades much smaller), 
gradually narrowed above to a minutely bilobed apex, some- 
'what narrowed below to a conduplicate base, mid-nerve sul- 
cate above and sharply carinate beneath, subcoriaceous. 
Scapes solitary in the axils of the sheaths, 12-21 cm. long 
when mature, 1-4 to each pseudobulb, spreading or arcuate. 
Peduncles up to the inflorescence 9 to about 14 cm. long, 
subterete or slightly 4-angled at base, very narrowly ancipi- 
tous-winged above, with 2-4 minute remote infundibuliform 
sheaths. Sometimes the peduncles have 1-2 short strict 
floriferous branches. Racemes distichously flowered, 1.3-9 
cm. long when mature, irregularly and loosely flowered, the 
lowermost flower sometimes 25 mm. distant from the others. 
Rachis complanate, somewhat fractiflex. Floral bracts 
ovate-triangular or triangular-lanceolate, ancipitous. Flow¬ 
ers fleshy. Lateral sepals connate into a lanceolate lamina 
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