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4 TEUCRIUM Tourn. (GERMANDER.) 
Herbs or undershrubs, with 5-toothed calyx, corolla with the 4 upper 
lobes nearly equal and turned forward so that there seems to be no 
upper lip and lower lobe much larger, 4 stamens exserted from the 
deep cleft between the 2 upper lobes of the corolla, and confluent an- 
ther-cells. 
* Erect perennial herbs: leaves undivided: flowers in naked terminal spikes or racemes. 
1. T. Canadense L. Downy, & to 9 dm. high: leaves ovate-lanceolate, serrate, 
rounded at base, short-petioled, hoary underneath, the floral scarcely longer than 
the oblique unequally-toothed calyx: whorls about 6-flowered, crowded in a long 
and simple wand-like spike: calyx camescent, the 3 upper lobes very obtuse or the 
middle one acutish: corolla purple, rose, or sometimes cream-color, 12 mm. long.— 
Low grounds, throughout Texas. 
2. T. occidentale Gray. Loosely pubescent: calyx villous with viscid hairs, the 
upper lobes acute or middle one acuminate: corolla 8 to 10 mm. long: otherwise like 
the last.—Extending from the northern plains into Texas. 
** Low and diffuse herbs : leaves multifid or incised, having solitary pedicellate flowers in 
their axils, 
3. T. Cubense L. Glabrous or nearly so, branched from an annual root: leaves 
cuneate; lower obovate-cuneate or rhomboidal and short-petioled, crenately incised, 
sometimes 3 to 5-cleft tothe middle; uppersessile, palmately 3-cleft or 3 to 5-toothed, 
exceeding the flowers: corolla pale blue or white, 6 to 8 mm. long, hardly exceeding 
the calyx.—Southern Texas, from Brazos Santiago westward. 
4, T. laciniatum Torr. Glabrous or hirsute-pubescent, much-branched from a 
woody perennial root: leaves pinnately 3 to 7-parted into narrow linear entire or 
2 or 3-lobed or toothed divisions, rather rigid; the floral much crowded, 3-parted ; 
upper equaling the flowers: corolla pale blue or lilac, 12 to 20 mm. long, with spat- 
ulate lower lobe much surpassing the calyx.—Plains of southern and western Texas. 
5. HYPTIS Jacq. 
Ours is a minutely pubescent or smoothish herb, with slender-petioled 
leaves, capitate or spicate flowers, mostly equally 5-toothed calyx, 
corolla with the lower lobe saccate and abruptly deflexed at the con- 
tracted and callous base, and didynamous stamens (all fertile) declined 
toward or resting on the lower lip of the corolla. 
1. H. radiata Willd. Stems tall: leaves ovate-lanceolate, toothed, with entire 
long-tapering base: axillary peduncles usually shorter than leaf, bearing a many- 
flowered soft-puberulent capitate glomerule which is mostly shorter than its involu- 
cre of whitish bracts: corolla white, purple-dotted.—Low ground, near the coast. 
6. MENTHA Tourn. (MINT.) 
Odorous perennial herbs, with small flowers mostly in close clusters 
forming axillary capitate whorls (sometimes approximated in interrupted 
spikes), bell-shaped or tubular 5-toothed calyx (equal or nearly so), 
corolla with short included tube and bell-shaped border somewhat 
eq ually4-cleft, and 4 equal erect distant stamens.—Ours are all intro- 
duced plants. 
