106 LABIATE 



Connective joined to the filament by one end; only one anther cell ...,. . ^ ...... 12 



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



Flowers in oblong peduncled heads, pale violet: stamens exserted 13 



5. Stamens 4, perfect, ascending under the concave or hooded upper 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 10 



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



1. TBICHOSTEMA, Gronovius. 



1. T. oblongum, Benth. Corolla-tube shorter than the calyx. Or.-CaL 



2. T. laxum, Gr. Diffuse: leaves petioled: cymes peduncled, often forked. 



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



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



5. T. lanatum, Benth. Shrubby: leaves narrow: corolla woolly. Santa Barbara* fl* 



2. MENTHA, Linnaeus. 



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

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



3. LYCOPUS, Tournefort. 



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



2. L. lucidus, Turcz, var. Americanus, Gr. Stem acute-angled, stonti nmnen 

 tuberiferous: calyx-teeth slender, equaling corolla. 



3. L. sinuatus, Ell. Leaves mostly incised or pinnatind. N. CaL, Or. 



4. PYCNANTHEMUM, Michaux. 

 1. P. Calif brnicum, Torr. Leaves ovate of narrower, sessile, 1-3 in. long. 



5. MONARDELLA, Bentham. 



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



2. Calyx . J 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, $-f in. long, upper subsessile 6, 7 



* * Annuals loosely branching: leaves entire or undulate f rather distinct t narrowed into a 



petiole: calyx-teeth with margined nerve. 

 Bracts rigidly cuspidate white and transparent except tfce veins. 8, & 



