171 



Verbena niicrophylla. Humb. et Kurdh, Nov. Gen. v. 2. p. 

 220. tab. 133. 



Hab. In convalle fluminis " Atuel," provincia Mendozae : 

 alt. 7000 ped. 



This is well represented in Humboldt's Nova Genera 

 above quoted. Our plant is indeed more woody, more caes- 

 pitose, and smaller in all its parts, owing probably to a dif- 

 ferent exposure. 



LIPPIA. 



1. Lippia nodiflora : caule subherbaceo prostrato, foliis ob- 



ovato-cuneatis apicem versus serratis subpubescentibus, 

 capitulis oblongo-rotundatis, bracteis ovato-acuminatis. 



/3. minor.) caule suffrutescente, repente, foliis angustioribus, 

 capitulis rotundatis. 



Lippia nodiflora. Mich. Fl. Bor. Am. v. 2. p. 15. Humb. 

 et Kunth, Nov. Gen. v. 2. p. 213. 



Zapania nodiflora. Pers. Syn. PL v. 2. p. 140. 



Verbena nodiflora. Linn. Sp. PI. p. 28. 



Hab. ec. Locis humidis prope Mendozam : alt. 2500 ped. — 

 /3. Ad ripas fluminis " Saladillo," in provincia " Cor- 

 dova." 



Our Var. /3. comes very near the Lippia reptans of Hum- 

 boldt and Kunth, but differs in the rounded, not oblongo- 

 cylindrical, heads of flowers. I fear, however, it can only be 

 considered a dwarf state of L. nodiflora, though at first sight 

 it appears almost entitled to rank as a distinct species. The 

 cells of the anthers of the two uppermost stamens of this 

 species are not placed parallel, but one is inserted higher up, 

 and has a sort of membranous appendage or crest attached 

 to it. The Calyx is oval and compressed, especially on one 

 side, distinctly bifid, at length enclosing the two semiterete 

 nuts, which are placed face to face, and easily separated. 



2. Lippia asperifl)lia ; suffruticosa erecta, foliis lanceolatis 

 serratis appresso-pilosis scabris subsessilibus venis dis- 



