cence a several-flowered raceme which much exceeds the 
subtending leaf. Dorsal sepal about 5mm. long and 1.5 
mm. broad, oblong-lanceolate, acute or obtuse, 3-nerved, 
fleshy, somewhat navicular. Lateral sepals connate for 
about two thirds of their length, about 4—4.5 mm. long, 
the pair about 2.5 mm. broad, oblong-oval, gibbous 
at the base, acute, each sepal 3-nerved. Petals about 2.5 
mm. long and 1.2 mm. broad, oblong-elliptic, obtuse, 
l-nerved. Lip about 8 mm. long and 1.5 mm. broad, 
subhastate or 8-lobed; the lateral lobes small, obtuse; 
mid-lobe oblong, verrucose, with an inconspicuous callus 
extending from each sinus toward the apex. Column 
about 2.5 mm. long, arcuate, clinandrium denticulate ; 
column-foot about 1 mm. long. 
Mexico: Mt. Zempoala, State of Morelos, at about 3000 meters 
altitude, longitude 99°19’ west, latitude 19°01’ north, 1932, Juan 
G. [onzdles] 2678; Cumbres de la Cruz, between Urupdn & los Reyes, 
State of Michoacan, flowers greenish with many purple dots, at 1700 
meters altitude, September 20, 1935, Juan G.|onzdles| 4922; near 
Coalcoman, State of Michoacan, flowers greenish yellow with dark dots, 
at ca, 1700 meters altitude, longitude 103°09/ west, latitude 18°47/ 
north, June 22, 1933, Halbinger 1752 (Tyre in Herb. Ames No. 
51941); on coffee shrubs, humid forest near Hacienda San Antonio, 
foot hills of Volein Colima, sepals and petals dingy yellow, lip dull 
purple, at 900 meters altitude, longitude 103°46/ west, latitude 19° 
26/ north, September 15, 1934, Nagel 4022. 
Pleurothallis longispicata has no near allies in Mexico 
or Central America. 
Pleurothallis oblanceolata L.O. Williams sp. nov. 
Herbae parvae, epiphyticae, repentes vel caespitosae. 
Caules secundaril breves. Folia anguste oblanceolata, 
obtusa, coriacea. Inflorescentia uni- ad triflora; peduncu- 
lus filiformis, quam folia brevior. Sepalum dorsale lance- 
olatum, acutum, cucullatum, trinervium. Sepala lateralia 
sepalo dorsali similia sed leviter gibbosa. Petala lanceo- 
lata, acuminata, integra vel paulo serrulata, uninervia. 
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