MINT FAMILY. 345 



■t- +- Stamens not exserted. 



26. NEPETA. Cal)'x obliquely 5-tootlieU. Stamens parallel and ascending, and their 



anthers approaching in pairs under the upper lip of the corolla, their cells diverging 

 from each other. Middle lobe of lower lip of corolla considerably largest. 



27. CEDRONELLA. Flowers nearly lilie those of Nepeta; but the cells of the anthers 



parallel. 

 (35. PHL0MI8, of the next section, might, from the stamens, be sought for here.) 



«*»«♦*» Stamens i, the lower or outer pair longer, ascending and parallel, 

 their anthers in pairs mostly under the concave or arched upper lip of the 

 coroUa. Plants not sweet scented, some of them bitter aromatic. 



+- Corolla decidedly 2-lipped ; calyx also i-lipped, irregular, closed in fruit. 



28. BKUNELLA. Caly-x tubular bell-shaped, reticulated, flattened on the upper side; the 



upper lip broad, flat, 3-toothed ; the lower 2-cleft. Tube of the corolla dilated on the 

 lower side just below the rather narrowed throat ; upper lip arched and entire ; 

 lower widely spreading, with lateral lobes oblong, the concave middle one rounded 

 and crenulate. Filaments 2-toothed at the ape.\, the lower tooth bearing the anther. 

 Flowers in a terminal close head or short spike. 



29. SCUTELLARIA. Calyx short, with the very short Hps truncate and entire, and a 



large hump on the upper side, the whole helmet-shaped ; the upper lip usually fall- 

 ing away when the fruit is ripe. Corolla with rather long ascending tube, the lateral 

 lobes of the lower Up small and somewhat connected with the arched upper lip, the 

 middle lobe larger and spreading, or the sides reflexed ; anthers of the lower stamens 

 l-ceUed. Bitterish herbs, not aromatic, with flowers single in the axil of each bract 

 or leaf. 

 ♦• ^- Corolla inflated funnel-form and rather slightly 2-lipped ; calyx thimiish, open 

 bell shaped in fruit, the .i teeth equal and pointless ; flowers simply spiked, only 

 one to each bract or floral leaf. 



30. PHYSOSTEGIA. Upper lip of the corolla broad and a little arched, entire ; lower of 



3 broad and somewhat spreading short lobes. Smooth and scentless herbs, with 

 thickish and sessile lanceolate or oblong leaves. 



■*-■>-.>- Corolla decidedly 2-lipped ; calyx 5-toothed. regular, or sometimes obscurely 

 2-lipped. not closing in fruit ; the teeth commonly awl-shaped or triangular, 

 often rigid or spiny-tipped. 



++ Stamens included in the tube of the corolla; calyx \n toothed. 



81. MARRUBIUM. Teeth of the calyx awl-shaped or spiny-tipped, recurved .after flower- 

 ing. Corolla small; upper lip erect. Bitter-aromatic plants; flowers in axillary 

 capitate whorls. 



++ -n- Stamens raised out of the tube of the corolla ; calyx 5-toothed. 



= Stamens not deflexed after flowering. 



B Anthers opening crosswise by 2 unequal valves, the smaller one ciliate. 



32. GALEOPSIS. Calyx tubular bell-shaped, 5-nerved, with spiny-tipped teeth. Corolla 



enlarged in the throat, the ovate and entire upper lip arched, the middle lobe of 

 spreading lower lip obcordate. Flowers in axillary whorl-like clusters. 

 1 P Anthers opening lengthicise in the ordinary way. 

 o Calyx membranaceous and greatly enlarged, and almost shield-like. 



33. MOLUCCELLA. Calyx with the border reticulated, veiny, entire, except 5 mucronate 



points. Corolla much shorter than the calyx ; the middle lobe of its lower lip obcor- 

 date. Nutlets 3-sided. 



o o Calyx ordinary, icith sharp or awl-like teeth. 

 X Upper lip of corolla erect. 

 M. BALLOTA. Calyx somewhat fiiiinel-roriii, with uii expanding 5-toothed border, the 

 tube 10-ribbed. Anthers approximate in pairs under the upper lip. Nutlets ronnd- 

 iah on top. 



