collected by Mr. Schomburgk in British Guiana. 447 



70. Lantana salvieefoUa. Jacq. Hort. Schomb. iii. p. 18. t. 283 ?— British 

 Guiana. Schomburgk, n. 730. 



71. Lantana annua. Linn. Sp. PI. 784 ? — British Guiana. Schomburgk, 

 n. 207. 



If Lippia be kept apart from Lantana, the two sections of the lat- 

 ter genus proposed by Chamisso and Schlechtendal must be adopted 

 as distinct genera. It is for the section Callioreas of those authors 

 that I have retained the name of Lantana. In it the ovarium is more 

 fleshy than in Lippia, less so than in Camara. The structure of the 

 fruit is as in Lippia, only that the endocarp is harder and woody, and 

 the pericarp is thicker and somewhat fleshy. The species of this 

 genus are in a state of too great confusion to determine the speci- 

 mens before me with accuracy, without a detailed review of the 

 whole group. 



72. Camara tilieefolia. — Lantana tilisefoHa. Cham, et Schl. Linncea, vii. 

 p. 122. — British Guiana. Schomburgk, n. 196. 



In Camara the ovarium only differs from that of the preceding ge- 

 nera by being rather more fleshy even than in Lantana, but the fruit 

 is very diff'erent. It is a complete berry, and the pyrenes diverging 

 near the base leave between them an interstice filled with pxdp, or 

 perhaps sometimes empty, which has been improperly described as a 

 third sterile cell. 



73. Stachytarpheta elatior, Schrad. Hort. Gott. Reichb. Icon. Exot. t. 

 59. — Swamps on the Upper Rupunoony. Schomburgk. It is also Gardner's 

 no. 1106 from Pernambuco. 



74. Stachytarpheta cajenensis, Vahl, Enum. i. p. 208. — British Guiana. 

 Schomburgk, n. 262. 



This species, which I have also from Trinidad, agrees with Vahl's 

 description in every respect, except that Schomburgk states it to be 

 herbaceous, and Vahl describes his as shrubby ; but this difference 

 may arise from the age of the plant, or from the difficulty in ascer- 

 taining the point from dried specimens. 



Endlicher reunites Stachytarpheta with Verbena ; but independ- 

 ently of the habit and stamina, the difference between the bi- ovu- 

 lated and the four-ovulated ovarium is surely of importance in this 

 tribe, where the genera are all closely allied, though numerous in 

 species. Melasanthus of Pohl appears to have been rightly joined 

 to Stachytarpheta as a section by Chamisso and Schlechtendal. "With 

 Bouchea of those authors I am unacquainted. Dipyrena of Hooker 

 is not a natural genus, the single species which composes it having 

 the inflorescence and flowers of Verbena juncea, and the foliage nearly 

 of V. aspcra ; yet the difference in the fruit, already perceptible in 



