~ BOTANY. 115 
Tribe 2. Menthoidew. Stamens straight or diverging. Tube of the corolla 
hardly exceeding the calyx, with four or five nearly equal divisions. Ex. : 
Tsanthus, Mentha, Lycopus. 
Tribe 3. Monardee. Stamens ascending; the superior, abortive, or 
synantherous ; the inferior with lmear anthers united or halyed. Ex.: Salvia, 
Monarda, Blephilia. 
Tribe 4. Satureinee. Stamens straight, diverging or slightly ascending ; 
the inferior longest. Anthers not bifid. Tube of the corolla without the ring, 
scarcely exceeding the calyx and the imbricated bracts; the limb slightly 
bilabiate, with flat divisions. Ex.: Cunila, Thymus, Origanum, &c. 
Tribe 5. Melissinee. Stamens ascending; the inferior longest. Corolla 
bilabiate with flat divisions (upper lip rarely arched). Calyx generally tra- 
versed by thirteen nervures, bilabiate. Ex: Hedeoma, Melissa, &c. 
Tribe 6. Scutellarinee@. Stamens ascending ; the inferior longest. Corolla 
bilabiate ; upper lip arched. Upper lip of the calyx entire or truncate. Ex. : 
Prunella, Scutellaria. 
Tribe 7. Prostantheree. Stamens diverging or ascending, the lower long- 
est or abortive. Anthers often dimidiate. Corolla with the tube short, cam- 
panulate above, the flat divisions disposed nearly in two lips. Achzenia 
coriaceous, reticulated, with the style persistent. Plants entirely Australasian. 
Ex.: Chilodia, &e. | ri 
Tribe 8. Nepetee. Superior stamens projecting most. Ex.: Lophanthus, 
Nepeta, Dracocephalum, Cedronella. 
Tribe 9. Stachydee. Stamens ascending, the inferior longest. Corolla 
bilabiate. Calyx not thirteen nerved. Achzenia dry, almost smooth. Ex.: 
Synandra, Lamium, Galeopsis, Stachys, Betonica, Ballota, &e. 
Lribe 10. Prasiew. Stamens ascending, the inferior the longest. Corolla 
bilabiate. Acheenia fleshy. Ex: Prasium, &c. 
Tribe 11. Ajugordec. Stamens ascending, projecting considerably beyond 
the upper lip, which is very short or bifid, or declined; achzenia with reticu- 
lated furrews. Ex.: Teucrium, Trichostema. 
Most of the genera adduced above represent this order in the United States. 
Plants of the order Labiate are generally fragrant and aromatic, none of them 
poisonous or injurious. Various species of Mentha or Mint yield volatile oils. 
Peppermint is M. piperita; Spearmint, M. viridis; and Pennyroyal, M. 
pulegium. Lavender is obtained from various species of Lavandula, one of 
which (Spica latifolia) furnishes oil of spike. Sweet marjoram is Origanum 
majorana; hoarhound, Marrubium vulgare; thyme, a species of Thymus ; 
savory, of Satureia; sage, of Salvia; basil, of Ocymum. ‘The patchouli per- 
fume is derived from Pogostemon patchouli. 
Galeopsis tetrahit, Hemp-nettle (United States and Europe) (pl. 62, jig. 7): 
a, calyx; b and c, corolla; d, fruit calyx ; e, a nut. 
Betonica officinalis (Europe) (pl. 62, fig. 6). The various figures to all of 
which 6 is attached need no special explanation. 
Orver 86. ScropHunariaces, the Figwort Family. Calyx divided into 
four or five parts, unequal, persistent, inferior. Corolla monopetalous, more 
or less irregular and bilabiate, cr personate, sometimes spurred or saccate 
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