106 LABIATR 
Connective joined to the filament by one end; only one anther cell....0..-sse-eeseee 12 
§ 4. Stamens 4, perfect: corolla bilabiate: calyx 15 nerved. 
Flowers in oblong peduncled heads, pale violet: stamens exserted.........- saveuewe 13 
§ 5. Stamens 4, perfect, ascending under the concave or hooded upper lip. 
Calyx with a projection on upper side: flowers solitary axillary....... efhecariseeuienie: koe 
Calyx purple-tinged, upper teeth broad, obtuse, lower two lanceolate........ cowcece LG 
Calyx 10-toothed, the shorter 5 teeth spiny, recurved: corolla small, white..... seoen LB: 
Calyx nearly equally 5-toothed: flowers in whorls or interrupted spikes..........22. 17 
1. TRICHOSTEMA, Gronovius. 
oblongum, Benth. Corolla-tube shorter than the calyx. Or.—Cal. 
laxum, Gr. Diffuse: leaves petioled: cymes peduncled, 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, 8, 
Oem WH m= 
HARAAA 
2. MENTHA, Linneus. 
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, Turez, var. Americanus, Gr. Stem acute-angled, stout: runners 
tuberiferous: calyx-teeth slender, equaling corolla. 
3. L. sinuatus, Ell. Leaves mostly incised or pinnatifid. N. Cal., Or. 
4. PYCNANTHEMUM, Michaux. 
. P. Californicum, Torr. Leaves ovate or narrower, sessile, 1-3 in. long. 
~~ 
5. MONARDELLA, Bentham. 
§ 1. Calyx over 4 in. long: corolla-tube much longer than the lobes.............. 1,2 
§ 2. Calyx 4.3 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: calyz-teeth soft. 
Leaves ovate to lanceolate, petioled, pinnately veined: bracts obtuse........... 3, 4, 5 
‘Leaves linear to oblong, entire, 4-2 in. long, upper subsessile...... ............. 6, 
** Annuals loosely branching: leaves entire or undulate, rather distinct, narrowed into a 
petiole: calyxz-teeth with margined nerve. 
®racts ngidly cuspidate white and transparent except tne veins.............-..., 38, 9 
