368 THE KINDS OF PLANTS 



6. APIUM. Celery. 



Annuals or biennials, with large pinnate leaves: flowers white, in small 

 umbels: fruit small, usually as broad as long, each carpel 5-ribbed: axis, 

 from which the carpels fall, not splitting in two. 



A. gravfiolens, Linn. Celery. Biennial, smooth: leaflets 3-7, wedge- 

 shaped or obovate, the lower ones about 3-divided, round-toothed, Europe: 

 cultivated for its petioles, which have become greatly enlarged. 



7. CAKUM. Caraway. 



Slender and erect, smooth annual and biennial herbs with pinnate leaves; 

 flowers white or yellowish, in compound umbels provided with involucres: 

 axis bearing the carpels, splitting in two at maturity. 



C. Carui, Linn. Caraway. Stem furrowed, 1-2 ft. : leaves cut into 

 thread-like divisions: flowers white. Europe. Cultivated for its fruits, 

 known as "Caraway seed," and also run wild. 



C. Petroselinum. Benth. Parsley. One to 3 ft. : leaflets ovate and 3-cleft, 

 often much cut or "curled" in the garden kinds: flowers yellowish. Europe, 



cc. GAMOPETAL^. 



XXXin. LABIATE. Mint Family. 



Herbs, usually of aromatic scent, with 4-eornered stems and 

 opposite usually simple leaves: flowers typically 2-lipped: stamens 

 4 in 2 pairs, or only 2: ovary deeply 4-lobed, forming 4 indehiscent 

 nutlets in fruit. A well-marked family of some 2,700 species, dis- 

 tributed in about 150 genera, of both temperate and tropical regions. 

 To this family belong the various mints, as peppermint, spearmint, 

 catnip, hyssop, thyme, pennyroyal, savory, rosemary, sage, hore- 

 hound, balm, basil. Flowers mostly in whorls in the axils of leaves 

 or bracts, sometimes forming interrupted spikes. 



A. Stamens 2. 



B. Calyx nearly equally toothed. 



C. Lobes 5: throat hairy 1. Monarda 



CO. Lobes 4-5: throat naked 2. Lycopus 



BB. Calyx 2-lipped. 



C. Throat naked within 3. Salvia 



CC. Throat hairy: plants very pungent-scented 4. Hedeoma 



AA. Stamens 4. 



B. Corolla scarcely 2-lipped: lobes nearly equal. 



C. Border of corolla 4-lobed: upper lobe broadest 



and emarginate 5. Mentha 



00. Border of corolla 4-lobed, with a deep fissure be- 

 tween the two upper lobes 6. Teucriiiin 



