52 The Botanical Gazette. [February, 



1 Calyx with a dorsal crest-like projection. . . .Scutellaria, 36. 



1 Calyx without a dorsal projection (2) 



2 Calyx globular or oblong, barely repand-bilabiate . . . . Salizir 

 via. 37. 



2 Calyx deeply bilabiate (3) 



2 Calyx not bilabiate, 3 to 5-lobed (4). 



2 Calyx not bilabiate, 5 to 10-toothed (5) 



3 Filaments of the upper pair 2-toothed at apex, one tooth naked^ 

 the other bearing the divaricate-celled anther. . . .Briinella, 38. 



3 Filaments simple... .Brazoria. 39, 



4 Calyx sub-regular, equally 5-toothed; flowers simply opposite in 

 the spikes, one under each bract. . . . Phvsosteiria, 40. 



4 Calyx tubular-campanulate, 3-lobed; inflorescence terminal and 

 capitate, 2 or 3 flowers under each bract. . . .Macbridea, 41. 



r 



4 Calyx campanulate, inflated, deeply 4-cleft; inflorescence simply 

 arid loosely leafy-spicate . . . .Synamlra, 42. 



5 Stamens included in the short tube, upper lip merely concave; 

 calyx strongly ribbed, teeth 5 to 10, subulate or spinulose; leaves ru- 

 gose. . . . MaiTubimn, 43. 



5 Stamens ascending beneath the galeate upper lip ((>). 



6 Stamens not deflexed after anthesis (7). 



6 Stamens deflexed to the sides of the throat or contorted after 

 anthesis (10). 



7 Calyx turbinate or tubular-campanulate, commonly oblique, fila- 

 ments not appendaged (9). 



7 Calyx tubular (8). 



7 Calyx funnelform-dilated at the throat; filaments not append- 

 aged Hal Iota, 44. 



8 Corolla upper lip strongly galeate; upper pair of stamens ap- 

 pendaged at base. . . . IMilomis, 45. 



8 Corolla upper lip erect, or incurved and elongate entire; fila- 

 ments not appendaged. . . . Leonotis, 4ti. 



9 Leaves cleft or incised, veiny, all longer than the capitate-ver- 

 ticillastrate flowers... .LeonuruB- 47. 



9 Leaves mostly cordate. . . .I/aminm. 4-8. 



9 Leaves ovate or oblong-lanceolate; .inner valve of each anther- 

 cell hirsute, the other larger, naked Galeopsis. 49. 



10 Calyx tubular-campanulate; corolla tube cylindrical, throat not 



dilated, upper lip erect... .Stachys. 50. 



Trctihui, N, y. 





