NOMENCLATORIAL NOTES. X 
BY 
Charles Schweinfurth 
Pleurothallis Pfavii Reichenbach filius in Flora 69 
(1886) 555. 
Masdevallia platyrachis Rolfe in Gard. Chron., ser. 
8, 4 (1888) 178. 
Pleurothallis platyrhachis Rolfe in Journ. Bot. 28 
(1890) 136—Hooker filius in Bot. Mag. 116 (1890) 
t. 7129. 
Kraenzlinella platyrachis Rolfe in Orch. Rev. 23 
(1915)826. 
Judging from the description and a copy with color 
of Reichenbach’s type of Pleurothallis Pfavii in Vienna, 
this name should include the concept described as Mas¬ 
devallia platyrachis. The only discrepancies between the 
concepts occur in the slightly larger leaves and flowers 
of P. Pfavii with the apparent absence of the fleshy cal¬ 
lus at the base of the column which is ascribed to P. 
platyrachis. 
Although previously recorded only from Costa Rica, 
Pleurothallis Pfavii is now reported from Mexico. One 
of these specimens shows an incomplete raceme that 
bears fourteen floral bracts. 
Mexico: Mt. Madre Vieja, State of Chiapas, at 1000 meters al¬ 
titude, “Flor aurantius; corticalis,” June 1988, E.Matuda 2633. 
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