246 S"^"'' FAMILY. 



, » » Omiln decidedly 2.Um>ed: calyx 6-loolhed, regular, or sometimef obscurely 

 iZpped"nol clZng in fruit: the teetii commonly awUhaped.or triangular, 

 often rigid or spiny-tipped. 



H- Stamem included in the tube of the coroUa : calyx lO-toothed. 

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

 after flowering. CoroUa small : upper )ip erect. Bitter-aromatic plants: 

 flowers in axillary capitate whorls. 



■^- H- Stamens raised out of the lube of the corolla : calyx b-toothed. 

 ** Anthers opening crosswise by 2 unequal values, 'the smaller one ciliate. 

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

 ' CoroUa enlarged in the throat, the ovate and entire upper lip arched the 

 rtiddle lobe of spreading lower lip oboordate. Flowers in axillary whorl-like 

 clusters. 



++ ++ Anthers opening lengthwise in the ordinary way. 

 33. LAMIUM. Calyx tubular bell-shaped, with 5 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 roilnded and spread- 

 ing or turned down, its base much narrowed. (Lessons, p. 102, fig. 209.) 

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

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

 spiny-pointed. Corolla lilie Stachvs, but middle lobe of lower lip obcordate. 

 Stamens parallel. Nutlets truncate and sharply 3-angled. Stems erect. 

 Flowers in close whorls in the axils of cut-lob.ed 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 ! Niitlets obtuse, but not trun- 

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

 terminal raceme or spike. 



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



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

 generally remaining parallel. 



37. PHLO.MIS. 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 base 

 of the filaments. 



38. MOLUCCJXLA. Calyx membranaceous and greatl^v enlarged, funnel-form, 



the border reticulated, veiny, entire, except 5 mucronate points. CoroUa 

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

 Nutlets 3-sided. 



1. TEtrCEIUM, GERMANDER. (Named for nucer, king of Troy.) % 

 T. Canad^nse, 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. TBICHOSTEMA, BLUE CURLS. (Name from the Greek, means 

 hair-like 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. dich6tomum, Common B. or Bastard Pennyroyal. Sandy fields 

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

 T. lineiu^e, from New Jersey S., has linear or lance-linear smoother leaves. 



3. ISANTHUS, FALSE PENNYROYAL. (Name in Greek means «?uo/ 

 fUmier, i. e. parts of corolla regular.) ® 



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

 nuboscent, 6' - 12' high, vflth ob'.ong 3-nervcd entire leaves, and scattered smaU 

 blue flowers on axillary peduncles : all summer. 



