246 MINT FAMILY. 



• • • Corolla decidedly Uifped: calyx 5-tootlied, regular, or aometimes obtcurely 

 i4ipped, not closing in fruit: the teeth commonly awl-shaped or triangular, 

 often rigid or spiny-tipped. 



-1- Stamens included in the tube of the corolla : calyx 10-tooihed. 

 31. MAREUBIUM. Teeth of the calyx awl-shaped or spiney-tipped, recurved 

 after flowering. Corolla small: upper lip erect. Bitter-aromaUo plants: 

 flowers in axillary capitate whorls. . 



H- +- Stamens raised out- of the tube of the corolla: calyx b-ioothed. 

 +♦ Anthers opening crosswise by 2 unequal valves, the smaller one cUiate. 

 82. GALEOPSIS. Calyx tubular bell-shaped, Swerved, with spiny-tipped teeth. 

 Corolla enlarged in the throat, the ovate and entire upper lip aiched, the 

 middle lobe of spreading lower lip obcordate. Flowers m axillary whorl-like 

 clusters. 



** *+ Anthers cpening hngthtdse in the ordinary way. 



33. LAMIUM. Calyx tubular bell-shaped, with 6 awl-shaped spreading teeth. 



Corolla much enlarged in the throat, the upper lip arching and with a narrow 

 base, lateral lobes of lower lip very short, the middle one rounded and spread- 

 ing or turned down, its base much narrowed. (Lessons, p. 90, fig. 256.) 

 Stamens ascending under the upper lip. Nutlets truncate at the top. 



34. LEONURUS. Calyx top-shaped, the awl-shaped teeth when old spreading and 



spiny-pointed. Corolla like Stachys, but middle lobe of lower lip obcordate. 

 &mens parallel. Nutlets truncate and sharply 8-angled. Stems erect. 

 Flowers in close whorls in the axils of cut-lobed leaves. 



35. STACHYS. Calyx mostly tubular bell-shaped, the teeth trian^lar or awl- 



shaped, sometimes rigid or even pungent. Corolla not enlarged in the throat, 

 the upper lip entire or nearly so, the lower 3-lobed with the middle lobe 

 nearly entire. Stamens ascending under the upper lip, but the outer pair 

 turned down after discharging their pollen ! Nutlets obtuse, but not trun- 

 cate. Flowers crowded in whorls, most of these commonly approximate in a 

 terminal raceme or spike. 



36. BETONICA. Like Stachys, but calyx more tubular and with awn-like teeth, 



tube of corolla longer and its upper lip sometimes notched, and the stamens 

 generally remaining parallel. 



37. PHLOMIS. Calyx tubular, with rigid nan-ow awl-shaped teeth from the 



notch of as many very short and broad lobes. Corolla as in Stachys. Upper 

 pair of stamens (rather the longer) with an awl-shaped appendage at the hase 

 of the filaments. 



38. MOLUCCELLA. Calyx membranaceous and greatly enlarged, funnel-form, 



the border reticulated, veiny, entire, except 6 mucronate points. Corolla 

 much shorter than the calyx; the middle lobe of its lower lip obcordate. 

 Nutlets 3-sided. 



1. TEtrCRIUM, GERMANDER. (NamedforJewcer, king of Troy.) ^ 



T. Canad^use, our only species, in low grounds, l°-3° high, downy, 

 with ovate-lanceolate serrate leaves downy beneath, and pale purple or rarely 

 white flowers collected in a long spike, in late summer. 



2. TRICHOSTBMA, BLUE CURLS. (Name from the Greek, means 

 hairMke stamens.) Ours are branching loosely-flowered rather clammy low 

 herbs, with entire leaves, and small flowers as it were panicled, blue, or 

 changing to purple, in summer and autumn. ® 



T. dichdtomum, Common B. or Bastard Pennyroyal. Sandy fields 

 E. & S. : 6'- 12' high, with mostly lance-oblong short-petioled leaves. 

 T. linetoe, from New Jersey S., has linear or lance-linear smoother leaves. 



3. ISANTHUS, FALSE PENNYROYAL. (Name in Greek means egual 

 flower, i. e. parts of corolla regular. ) @ 



I. csertlleus. Common in sandy or sterile soil ; bushy-branched, clammy- 

 pubescent, 6' - 12' high, with oblong 3-norvecl entire leaves, and scattered small 

 Uue flowers on axillary peduncles : all summer. 



