SPECIES OP MIMUI,US. 3 



usually flowering at summit only; pubescence scanty, villous : 

 leaves thin, elongated, elliptical and saliently as well as very 

 regularly dentate above a spatulateand entire basal part, ses- 

 sile by a subcordate but not dilated base : calyx villous, its 

 teeth deltoid but with subulate tip : corolla with long tube 

 exserted from the calyx by half its length. 



Wet rocks above Clear Creek, Camp Verde, middle Arizona, 

 J. W. Tourney, Aug. 1891, as in U. S. Herb. 



M. LUGENS. Stems upright, rather slender, very distinctly 

 ■1 -angled, lightly villous-pubescent : leaves elongated, the lower 

 almost oblanceolate, the floral rhombic-lanceolate, all acute, 

 saliently and closely serrate-toothed, the upper face marked 

 in the middle by a large somewhat triangular dark-brown or 

 blackish spot : peduncles slender, 3 or 4 inches long, twice the 

 length of the leaves : folds of the calyx wholly dark-colored, 

 as also the triangular-subulate teeth : corolla-tube of more 

 than twice the length of the calyx. 



Fort Huachuca, southern Arizona, Edward Palmer, 1890, 

 n. 441 as in U. S. Herb. Also the same, by the same, from 

 the Sierra de los Alamos on the Mexican side of the interna- 

 tional boundary, in the same year. 



M. RUPESTRis. Stems slender, branching, 4-angled, largely 

 prostrate, rooting at many of the nodes : leaves small, narrow, 

 mostly elliptical, 3-nerved, closely, saliently and almost pec- 

 tinately serrate-dentate : pedicels very slender, not equalling 

 the leaves : calyx thin, its teeth triangular-lanceolate : corolla 

 small, elongated, its tube twice the length of the calyx. 



State of Morales, Mexico,^ on wet cliffs at 7,500 feet on the 

 Sierra de Tepoxtlan, C. G. Pringle, 6 May, 1900; his n. 

 8348 as in U. S. Herb. There is a fragment of something 

 quite different mounted on one corner of the sheet. 



The following are of the alliance that is headed by the Mimu- 

 lus luteus of South America : 



