10 (1852) 766—Cogniaux in Martius FI. Bras. 8, pt. 
6 (1905) 228, t. 94, fig. 1. 
Cryptarrhena pallidiflora Reichenbach filius in Bot. 
Zeit. 10 (1852) 766. 
Cryptarrhena unguiculata Schlechter in Fedde Re- 
pert. Beihefte 8 (1921) 103; Beihefte 57 (1929) t.99, 
Nr. 889. 
To those names which have been found to be synony- 
mous with Cryptarrhena lunata, should be added C. Ke- 
gelu. A series of records of the concept C. Kegelii from 
the Reichenbach Herbarium shows a plant which differs 
from C.lunata only in having entire petals which are nar- 
rower than in some forms of that species. Moreover, the 
description (including measurements) as given by Faw- 
cett and Rendle for the typical Jamaican C. lunata cor- 
responds singularly well with that of the South American 
C. Kegelii as portrayed by Cogniaux in Martius Flora 
Brasiliensis. 
Cryptarrhena unguiculata seems to differ from typi- 
cal C.lunata in having slightly larger flowers, but other- 
wise it appears to coincide well with the aforesaid records 
of C. Kegelii. 
Considerable variability occurs in this species in the 
width of the petals, as well as in the form of the lobes 
of the lip. 
As now understood, Cryptarrhena lunata extends 
from Mexico to Costa Rica. It also occurs in Jamaica and 
Trinidad, and in British Guiana, Surinam, Colombia, 
Ecuador and Peru. 
Sigmatostalix guatemalensis Schlechter in Fedde 
Repert. 10 (1911) 253. 
Sigmatostalix costaricensis Rolfe in Kew Bull. (1916) 
78; in Bot. Mag. 145 (1919) t. 8825. 
Sigmatostaliv potkilostaliv WKriinzlin in Engler Das 
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