Stelis crescentiicola Schlechter in Fedde Repert. 
16 (1920) 442—Ames in Sched. Orch. 5 (1923) 11. 
Stelis flewuosa Lindley sensu Kriinzlin in Engler 
Bot. Jahrb. 26 (1899) 450. 
Stelis Isthmi Schlechter in Fedde Repert. Beihefte 
17 (1922) 16. 
Stelis praemorsa Schlechter in Fedde Repert. Bei- 
hefte 17 (1922) 17. 
In Schedulae Orchidianae, I discussed the characters 
of Stelis crescentucola Schltr. and gave my reasons for 
reducing WS. Isthmi Schltr. and S. praemorsa Schltr. to 
synonymy. When my remarks regarding S. Isthmi and 
S. praemorsa were written, I had arrived at my conclu- 
sions from astudy of duplicate specimens taken from the 
plants in C. W. Powell’s Balboan garden that had sup- 
plied Dr. Schlechter with his types. Since then I have 
examined the type specimens preserved in Schlechter’s 
herbarium and have been able to justify my suspicion 
that Schlechter described the labellum of S. praemorsa 
from imperfect flowers and to support my conclusion 
that S. Isthmi is inseparable from S. crescenticola. 
Stelis crescentucola is most closely allied to S. lati- 
petala Ames (cf. Bot. Mus. Leafl. Harv. Univ. 8 (1985) 
53), but differs from it in the consistently smaller leaves, 
in the lobes of the column and in the form of the label- 
lum. The flowers vary in color from white to purple with 
pink-flowered and pink- and yellow-flowered forms oc- 
curring. The labellum is scarcely 1 mm. long, very fleshy 
and characterized by a more or less abruptly ascending, 
rounded tip. Viewed from the side it is triangular. In 
dried specimens the labellum exhibits a wide range of 
variation caused by the changes brought about by the 
shrivelling of its fleshy tissues. The column has the stig- 
mas confluent beneath the triangular rostellar process. 
