Trichoslema. LABIAT^E. 347 



erect and narrow, 2-lobecl ; lower spreading, 3-cleft. Anther-cells more or less confluent. 

 Nutlets ovoid, smooth, obtuse. Leaves rugose. 



-I— •)— Stamens ascending under tlie galeate upper lip of the corolla. 

 ++ Introduced and naturalized from the Old World : stamens not deflexed after anthesis. 



44. BALLOTA. Calyx funnelform-dilated at tlie throat or border, 10-nerved, 5-toothed in 

 ours. Corolla nearly as in Stachi/s. Filaments not appendaged. 



45. PHLOMIS. Calyx tubular, 5-10-nerved, 5-tootlied in ours. Upper Up of the corolla 

 strongly galeate ; tlie lower spreading, 3-cIeft. Upper pair of stamens (in our species 

 rather longer) furnished with a subulate or hooked appendage at base ! 



.46. LEONOTIS. Calyx tubular, 10-nerved, at length incurved above, oblique at the 

 orifice, and with 5 or more unequal spinulose-tipped teeth, the upper one largest. Corolla 

 slender ; the upper lip erect or incurved and elongated, entire ; lower short and spreading, 

 3-cleft, its middle lobe not larger. Pilaments not appendaged at base : anthers approxi- 

 mate in pairs. Upper fork of the style very short. Flowers densely capitate-verticil- 

 las trate. 



47. LEONURUS. Calyx turbinate, 5-nerved, with nearly equal truncate orifice, and 5 

 rigid and at length spreading subulate-spinescent teeth. Corolla short ; upper lip oblong, 

 entire. Filaments not appendaged: anther-cells parallel or sometimes divergent; valves 

 naked. Nutlets smooth, truncate at apex. Leaves cleft or incised, veiny, all longer than 

 the capitatc'-verticillastrate flowers. 



48. LAMIUM. Calyx tubular- or turbinate-campanulate, somewhat 5-nerved, commonly 

 obUque at the orifice; the 5 teeth subulate but not spinescent. Corolla dilated at the 

 throat ; upper lip ovate or oblong, fornicate, narrowed at base ; lower lip spreading, its 

 lateral lobes truncate down to the throat, or sometimes oblong, and with or without a 

 tooth-like appendage ; middle one broad, emarginate, contracted and as it were stipitate 

 at base. Filaments not appendaged : antliers approximate in pairs ; their cells oblong, 

 divaricate, sometimes hairy ; valves not ciliate. Nutlets truncate at the apex. Leaves 

 mostly cordate. 



49. GALEOPSIS. Resembles Lamium in habit and Slachi/s generally in flowers. But 

 anthers transversely 2-valved ; the inner valve of each cell hirsute-ciliate, the outer and 

 larger one naked. 



++ -H- Indigenous (chiefly) : stamens all or the lower pair sometimes deflexed to the sides 

 of the throat or contorted after anthesis. 



50. STACHYS. Calyx tubular-campanulate or turbinate, 5-10-nerved, equally 5-toothed, 

 sometimes the upper teeth larger and more or less united. Corolla with eylindi-ical or 

 cylindraceous tube, not dilated at the throat ; upper lip erect, more or less fornicate or 

 concave, sometimes rather thrown back, entire or emarginate ; lower spreading, .l-lobed, 

 its middle lobe larger. Filaments naked : anthers approximate in pairs ; the cells either 

 parallel or divergent. Nutlets obtuse at the apex, not truncate. 



1. TETRACLEA, Gray. (From rsrrM, four, and -/Ista}, to close, referring 

 to the four distinct or closed nutlets of the fruit : first described as a Yerbenaceous 

 genus.) — Single species. 



T. Coulteri, Gray. Herb a foot or more high from a perennial root or suffrutescent base, 

 minutely puberulent : leaves petioled, ovate, nearly entire : flowers 2 or 3 on the short 

 axillary peduncles, short-pedicelled, cream-colored, in summer. — Am. Jour. Sci. ser. 2, xvi. 

 98; Torr. Bot Mex. Bomid. 1-34, t. 41 ; Benth. & Hook. Gen. ii. 1220. — Eocky hills, S. W. 

 Texas to Arizona. (Adjacent ilex.) 



2. TRICHOSTEMA, Gronov. (Trichostemsia of some.) Blue-Curls. 

 (From diji'i, hair, and aT7jiiii, for stamen, referring to the capillary filaments.) — 

 Herbs or suffrutescent plants, sweet-aromatic or strong-scented, mostly low ; with 

 entire leaves, and commonly blue or violet corolla and stamens : fl. summer : all 

 belonging to ^''e U. S. 



§ 1. Calyx very oblique and bilabiate ; its 3 upper divisions twice or thrice the 

 length of the lower two and united to above the middle : tube of the corolla 

 shorter than the limb : flowers loose, 1 to 3 on slender bibracteate peduncles, or 

 scattered on paniculate branches ; the alar ones, becoming lateral and secund or 



