SCHOMBURGK'S GUIANA PLANTS. 215 



453. R. demiflora (sp. n.) ; ramulis compressis peduncu- 

 lisque adpresse pubescentibus, foliis ovali-ellipticis coriaceis 

 glabris supra nitidis, pedunculis folio longioribus apice co- 

 rjmbosis, floribus tetrameris, corollas tubo calyce vixJongiore. 

 — Fnitex 12 — 15-pedalis. Folia 4 — S-pollicaria, acuminata, 

 basi in petiolum brevem angustata. Stipula:; meiiibranaceo- 

 foliaceas, lato-lanceolatae, obtusse, decidua?. Pedunculi infra 

 corymbum 7. — 8-polI. longi. Folia sub cor3'mbo duo ovata, 

 acuta, corymbo breviora, BracteJB lineares, floribus brevi- 

 ores. Corymbus densus. Flores sessiles. Calycis lacinire 

 post anthesin auctae, valde insequales. Corolla extus villosa, 

 tubo vix 3 lin., laciniis H Hn. longis. Genitalia et fructus 

 ut in praecedente, nisicapsula parumlongior tenuior. — Mount 

 Pari ma. Schomhurgk. 



Both De Candolle and Endlicher, in drawing up the char- 

 acter of Remijia, from Aug. de St Hilaire's description, state 

 the valves of the capsule to be bifid, but this is a mistake. 

 St Hilaire's words are, '* s' ouvrant en deux valves par le 

 milieu de la cloison, dont chaque moitie presente alors dans 

 son milieu une interruption lineaire," an obscure expression, 

 in which however the relative dont refers to the cloison not to 

 the valves. It is true he adds "(dehiscence loculicide)," but 

 this is evidently a slip of the pen, as it neither accords with 

 what immediately precedes, nor yet with the positive state- 

 ment (p, 5) that the three plants in question agree with Cin- 

 chona in their septicidal deliiscence, and that Macrocnemum 

 differs from them by the loculicidal dehiscence. In both the 

 new species described above, the valves are perfectly entire. 

 Exostemrna attstrale, A. de St Hit., E. furrnosum, Cham, et 

 Schlecht., and probably also E. cuspidatum, A.de St Hit. which 

 last I have not seen, are certainly not truly congeners to the 

 West Indian Exostemmata, for besides the marked difference 

 in the form of the flower and anthers, and in the habit, the 

 ovules of the South Brazilian species are horizontal without 

 any perceptible membranous expansion, whilst those of the 

 true West Indian Exostemmata are ascending, imbricate, flat 

 and membranous at the time of flowering. 



