OP ARTS AND SCIENCES. 135 



Wrightii, but has larger more oblong and more rugose leaves, nar- 

 rower bracts and narrower calyx-teeth. 



LippiA LYCioiDES, Steud. At San Antonio (1035), Uvalde (1036), 

 Bluffton (203G), and Laredo, Texas (1034), in the mountains east of 

 Saltillo (1037), and at San Luis Potosi (646 Schafifner) ; 712 Parry & 

 Palmer. 



LiPPiA NODiFLORA, Michx. At Sutherland Springs, Texas (1038), 

 at Solcdad, Coahuila (1039), and at San Luis Potosi (644 SchafFuer, 

 in part). 



LiPPiA LANCEOLATA, Michx. At San Luis Potosi (644 Schaffner, 

 in part); 710 Parry & Palmer, and 711 in part. A small-leaved 

 nearly prostrate form, probably L. reptans, HBK. 



Pkiva TUBEKOSA. Root tubcrous ; branching from the base and 

 decumbent, subvillous-pubescent : leaves sessile, oblong, narrowed at 

 base, coarsely toothed mostly toward the apex, strigose-pubescent, 6 

 to 12 lines long: spikes short, terminal: fruiting calyx 4 lines long, 

 pubescent, unequally toothed, contracted above the nutlets which fill 

 the dilated base: nutlets 1^ lines long, irregularly and coarsely re- 

 ticulated. — In the San Miguelito Mountains (717 Schaffner). 



Verbena polystachya, HBK. At San Lorenzo de Laguna 

 (1040), and a form with the calyx very pubescent, from the Sierra 

 Madre, south of Saltillo. 



Verbena urtic^folia, Linn. At Guanajuato (Duges). These 

 two species approach each other very closely. 



Verbena ? Allied to V. polystachya. Densely pubescent 



with stiff hairs, shorter and more appressed on the leaves, which are 

 lanceolate, incised and lobed at base ; panicle small. Perhaps a 

 hybrid between V. polystachya or V. urticcefolia and V. xutha. At 

 Saltillo (2037). 



Verbena officinalis, Linn. A very slender somewhat strigose 

 narrow-leaved form, at Sutherland Springs, Texas (1043), and at San 

 Lorenzo de Laguna (1042). Also a variety (?), of similar habit, but 

 more hirsute throughout, and the flowers larger, the slender corolla- 

 tube twice longer than the calyx; at Guajuco, Nuevo Leon (1041). 

 A form with the oblong-lanceolate leaves merely toothed is found in 

 the mountains near San Luis Potosi (718 Schaffner), and at Guana- 

 juato (Duges). 917 Parry &. Palmer is the more usual larger-leaved 

 form of the species. 



Verbena canescens, HBK. At Monterey, Nuevo Leon (1044), 

 and at San Luis Potosi (719 Schaffner) ; a dwarf form, with small 

 ovate leaves, at Laredo, Texas (2040) ; and a dwarf variety (?), with 



