Pleurothallis graminea Schlechter in Fedde Repert. 
Beih. 9 (1921) 74; ex Mansf. in Beih. 57 (1929) t. 114, 
Nr. 447. 
Judging from a photograph with floral analysis of 
typical Pleurothallis caulescens as compared with the 
description and a floral analysis of P. graminea (l.c.), 
these concepts are scarcely separable. This conclusion is 
strengthened by reference to collections from Ecuador, 
the locality of the type of P. caulescens. These show 
some stems and leaves whose measurements are as small 
as those specified for P. graminea and have flowers of 
apparently the same color as those of P. caulescens. 
The flowers of P. graminea seem to be slightly smaller 
than those of P. caulescens and there are inconsequential 
differences in details of the floral segments. 
It seems, therefore, to be advisable to follow Krinzlin 
in regarding Weberbauer 758 (the type of P. graminea) 
as referable to P. caulescens. 
[140 ] 
