1. T. 



2. T. 



3. T. 



4. T. 



5. T. 



106 LABIATiB. 



Connsctive joined to the filament by one end; only one anther cell ... 13 



§ 4. Stamens 4, perfect: corolla bilabiate: calyx 15 nerved. 



Flowers in oblong pednucled heada, pale violet: stamens exaerted 13 



§ 5. Stamens 4, perfect, ascending under the concave or hooded npper lip. 



Calyx with a projection on upper side: flowers solitary axillary 14 



Calyx purple-tinged, upper teeth broad, obtuse, lower two lanceolate 15 



Calyx 10- toothed, the shorter 5 teeth spiny, recurved: corolla small, white 16 



Calyx nearly equally 5-toothed: flowers in whorls or interrupted spikes 17 



1. TBICHOSTEMA, Gronovius. ' 

 oblon^um, Benth. CoroUa-tube shorter than the calyx. Or.-CaL 

 laxum, Gr. Diffuse: leaves petioled: cymes pedunoled, often forked, 

 lanceolatum, Benth. Gray-green: leaves crowded, sessile. Or.-Cal. 

 ovatum, Curran. Leaves round-ovate: calyx densely villous. S. Cal. 

 lanatum, Benth. Shrubby: leaves narrow: corolla woolly. Santa Barbara, S, 



2. MENTHA, Linnaeus. 

 1. M. Canadensis, L. Villous: leaves oblong-ovate or narrower. 

 Var. gflabrata, Benth. The similar serrate acute leaves nearly glabrous, 



3. liYCOPUS, Tournefort. 



1. Ii, Virginicus, L. Stem obtuse-angled: sterile filament minute. Or. 



2. Ii. lucidus, Turez, var. Americanus, Gr. Stem acute -angled, stout: rnnnem 

 tuberiferous: calyx-teeth slender, equaling corolla. 



3. Xi. sinuatus. Ell. Leaves mostly incised or pinnatifid. N. CaL, Or. 



4. PYCNANTHEMTJM, Miohaux. 

 1. P. Califomicum, Torr. Leaves ovate or narrower, sessile, 1-3 in. long. 



5. MONARDELIiA, Bentham. 



S 1. Calyx over J in, long: corolla- tube much longer than the lobes 1, 3 



§ 2. Calyx i-i in. long: corolla-tube but little longer than the linear or oblong flat lobes: 



flowers in dense involucrate heads. 



* Tufted: corolla flesh-color to rose, lobes linear: calyx-teeth soft. 



Leaves ovate to lanceolate, petioled, pinnately veined: bracts obtuse 3, 4, 5 



Leaves linear to oblong, entire, J- J in. long, upper subsessile 6, 7 



* * Annuals loosely branching: leaves entire or undulate, rather distinct, narrowed into j 



f^iole: calyx-teeth loilh margined nerve. 

 Bracts rigidly cuspidate white and tnuuparenc except ine veuu. U, 8 



