58. LABIATAE. 243 
simple. Anth. of the 2 longer and inferior stam. 1-celled, 
of the shorter and superior 2-celled. Cor. 2-lipped, upper 
lip concave. Cal. ultimately closed and compressed; lips 
entire, upper one with a concave scale on its back. 
9. PRuNELLA. Two inferior stam. longest. Filaments bifid, 
one branch barren. Anth. all 2-celled. Cor. ringent; upper 
lip concave, entire. Cal. ultimately closed and compressed, 
upper lip flat, truncate, 3-toothed; lower bifid. 
Tr. VI. NEPETEA. Stam. approximating, parallel under the 
upper lip of the cor., 2 inferior shortest. Cal. tubular. 
10. Nerera. Anth.-cells diverging. Cor. ringent; upper lip 
flat, straight, emarginate or bifid. Cal. 5-toothed. 
Tr. VII. STACHYDEAL. Stam. approximating, parallel under 
the upper lip of the cor., 2 inferior longest. Cal. tubular or 
bellshaped, spreading in fruit. 
* Stamens longer than the tube of the corolla. 
ll. Meurrris. Anth. approaching in pairs and forming a 
cross, bursting longitudmally. Upper lip of the cor. flat, 
entire, straight ; lower lip with 3 rounded nearly equal lobes. 
Cal. membranous, bellshaped, ample, variously lobed. 
12. Lamium. Anth. approaching in pairs; cells diverging, 
bursting longitudinally. Upper lip of the cor. arched; late- 
ral lobes of the lower lip minute toothlike or obsolete rarely 
elongated. Cal. bellshaped, 5-toothed ; teeth nearly equal. 
—Galeobdolon (Huds.) has the lobes of the lower lip of the 
cor. nearly equal and acute. 
13. Leonurus. Anth. approaching; cells nearly parallel, 
bursting longitudinally. Upper lip of cor. nearly flat, lower 
with 3 obtuse lobes. Cal. tubular, 5-toothed, 2 lower teeth 
rather the longest. Nuts flatly truncate. 
14. GaLzopsis. Anth. approaching in pairs; cells opposite, 
bursting by 2 valves transversely. Upper lip of cor. arched, 
lower lip 3-lobed with 2 teeth on its upper side, lobes un- 
equal. Cal. tubular, 5-toothed; teeth equal or 2 upper 
ones longest. Nuts rounded at the end. 
15. Sracuys. Anth. approaching in pairs; cells diverging, 
bursting longitudinally. Upper lip of cor. concave, lower 
of 3 unequal lobes. Cal. tubular-bellshaped with 5 equal 
teeth. Nuts obtuse and convex at the end. 
16. BauLora. Anth. approximating in pairs; cells diverging, 
bursting longitudinally. Upper lip of cor. erect, concave ; 
M2 
