NOMENCLATORIAL NOTES IN 
PLEUROTHALLIS 
BY 
CHARLES SCHWEINFURTH 
Pleurothallis angustisegmenta C. Schweinfurth 
nom. NOV. 
Restrepia cucullata Lindley in Ann. & Mag. Nat. 
Hist. 15 (1845) 108; Fol. Orch. Restrepia (1859) p. 
3, non Pleurothallis cucullata Ames (1923). 
Restrepia rhynchantha Reichenbach filius & Warsce- 
wicz in Bonpl. 2 (1854) 114. 
Barbosella cucullata Schlechter in Fedde Repert. 15 
(1918) 261. 
Barbosella rhynchantha Schlechter in Fedde Repert. 
15 (1918) 263. 
Pleurothallis rhynchantha 1.0. Williams in Bot. Mus. 
Leafl. Harv. Univ. 7 (1939) 188. 
In his Folia Orchidacea (l.c.), Lindley treated Re- 
strepia rhynchantha as synonymous with R. cucullata; a 
conclusion which was formed after examining authentic 
material of R. rhynchantha sent to him by Reichenbach. 
The flower of the latter species appears to be somewhat 
larger than that of FP. cucullata. 
Since the genus Pleurothallis, which is now considered 
to include the concept Restrepia, already has a species 
named P. cucullata, the above new name is required. 
Furthermore, it is clear that the genus Barbosella is 
untenable and is mostly, if not entirely, referable to 
Pleurothallis. 
Pleurothallis caulescens Lindl. in Hooker Journ. 
Bot. 1 (1834) 9; Fol. Orch. Pleurothallis (1859) p. 44. 
Humboldtia caulescens O. Kuntze Rev. Gen. Pl. 2 
(1891) 667. 
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