LABIATE. (MINT FAMILY.) 311 
Teme ll. SATURELIEJE, — Stamens 2 or 4, straight and spreading, or connivent under 
the upper lip; the upper pair shorter, or abortive. Anthers 2-celled. Nutlets smooth, 
distinct. 
* Corolla-lobes nearly equal. Stamens distant. 
8. MENTHA. Fertile stamens 4. Whorls spiked. Nutlets obtuse. 
4. LYCOPUS. Fertile stamens 2. Whorls axillary. Nutlets truncate. 
* + Corolla 2-lipped. Stamens straight, distant, spreading. 
5. CUNILA. Stamens2. Calyx equally 5-toothed, hairy in the throat. 
6. PYCNANTHEMUM. Stamens 4. Calyx 2-lipped or 5-toothed, naked in the throat. 
7. COLLINSONIA. Stamens 2or4. Calyx 2-lipped, the upper lip truncate, 3-toothed. Co- 
rolla fimbriate. 
* * * Corolla 2-lipped. Stamens ascending and spreading above, or connivent under the 
upper lip. 
+ Fertile stamens 2, the two sterile ones small. 
8. HEDEOMA. Calyx 13-nerved, 2-lipped; the lower lip hispid. 
+ + Fertile stamens 4, Calyx 13-nerved. 
9. MICROMERIA. Calyx-teeth nearly equal. Flowers solitary. Low herbs. 
10. CALAMINTHA. Calyx 2-lipped. Flowers in cymes. Anthers awnless. Chiefly shrubs. 
ll. DICERANDRA. Calyx 2-lipped.' Anther-cells awned. Branching annuals. 
12. MELISSA. Calyx tubular-bell-shaped, flattened on the upper side. Tube of the corolla 
curved upward. 
Ter: II. MONARDEÆ. — Stamens 2, ascending and parallel. Anthers 1-celled, or 
with 2 confluent cells. Calyx and corolla 2-lipped. Nutlets smooth, distinct. 
13. SALVIA. Connective of the anther elongated, oblique ; the upper cell fertile; the lower - 
14. MONARDA. Anther 2-celled, the cells confluent. Calyx-teeth equal. 
15. BLEPHILIA. Anther 2-celled, the cells confluent. Calyx2-lipped ; the upper teeth awned. 
Tewe IV. NEPETE ZX. —Stamens 4, the upper pair longer. Nutlets smooth, distinct. 
16. LOPHANTHUS. Upper stamens curving downward; the lower ascending. Anther-cells 
| parallel. 
li. NEPETA. Stamens all ascending. Anther-cells diverging. 
18. CEDRONELLA. Stamens all ascending. Anther-cells parallel. 
Tewe V. STACHYDEJE. — Stamens 4; the lower pair longer, parallel, ascending, 
Upper lip of the corolla concave or keeled. Calyx 3-10-toothed or lobed. Nutlets 
smooth, distinct. t3 
* Calyx 2-lipped, closed in fruit. 
15. BRUNELLA. Lips of the calyx toothed. Flowers 2ina cluster, spiked. 
20. SCUTELLARIA. Lips of the calyx entire; the upper one appendaged. Flowers single, 
opposite. - ; itr ma 
* + Calyx not 2-lipped ; the teeth or lobes spineless. - d d 
21. MACBRIDEA. Calyx 3-lobed. Flowers capitate, in crowded 4-flowered whorls. ; 
22. PHYSOSTEGIA. Calyx 5-toothed. Flowers opposite, spiked. Nutlets 3-angled. 
23. LAMIUM. Calyx 5-toothed. Flowers in axillary cymes. Nutlets truncated. 
S * * * Calyx not 2-lipped ; the teeth rigid or spiny- 
24. MARRUBIUM. Calyx-teeth 10, nearly equal. Stamens included. Herbs woolly. 
25. LEONOTIS. Calyx-teeth 8-10, very unequal. Stamens exserted. Whorls globose. 
26. LEONURUS. Calyx-teeth.5. Nutlets obtuse, not truncate. Leaves incisely lobed. 
27. STACHYS. Calyx-teeth 5. Nutlets truncate, sharp-angled. Leaves undivided. 
i 
-Tame VI. AJUGEJE.— Stamens 4, ascending, parallel, exserted. Nutlets reticulated as 
and pitted, their bases partially united within. ae 
>. + Stamens barely exserted, nearly equal. = 
28. ISANTHUS. Lobes of the corolla and calyx nearly equal. Poduncles 
