160 Sprague. — On the Heteranthus Section 
useful to give shortly the principal characters of the section 
Heteranthns as now constituted. 
Principal characters. Prophylla 2. (Sub-genus Eucuphea .) 
Flores oppositi, in quovis pari inaequales (exc. C. Lehmanni). 
Bracteae magnae hypsophylloideae, ciliatae. Caulis saepius 
pilis fuscis, crassis biseriatim obtectus. Folia opposita. 
Petala 6, 4, vel 2. Stamina 11 alterne inaequalia. Discus 
saepius deflexus (in C. tarapotensi erectus). Ovula 3-10. 
Key to the species (mainly from Koehne). 
Filamenta inclusa vel parum exserta. 
C. setosa , C. rigidula , C. sordida. 
Filamenta valde exserta. 
I. Petala 6. 
C. hispidiflora , C. epilobiifolia , C. Buravii , C. Leh- 
manni. 
II. Petala 4. 
C. tetrapetala. 
III. Petala 2. 
1. Discus erectus. 
C. tarapotensis. 
2. Discus deflexus. 
C. Bombonasae , C. epilobiifolia var. Caquetae , C. tetra- 
petala var. Cosangae. 
Cuphea tarapotensis , Sprague, sp. nov. 
Suffrutex. Caulis (25 cm. circ.) foliaque ut in C. epilobii- 
folia. Pedicelli 3 mm. longi, ad vel infra medium prophylla 
ovata acuta ciliata gerentes ; bracteae late ovatae, longe 
ciliatae. Calyx (5-5*5 mm.) calcare breviusculo recto munitus, 
fauce ampliata adscendens, dense breviterque hirsutus, intus 
infra stamina pilosa ; append, lobis breviores, breviter setosae. 
Petala 2 (dorsalia), quam calyx paullo breviora, ovata 
