248 LAMIACEAE. 



lip ovate, all subulate-tipped: corolla white or pinkish, slightly exceeding the 

 calyx ; middle lobe of the lower lip renif orm : nutlets fully 1 mm. long. — S. 

 Bare, in fields, Nat. of Eu. — Spr. 



6. MABRUBIUM [Tourn.] L. Perennial low or diffuse herbs. Leaf- 

 blades toothed, often rugose. Flowers in dense axillary clusters. Calyx nearly 

 regular, 10-lobed; lobes slender, spreading or recurved, sometimes unequal. 

 Corolla 2-lipped: upper lip ei-ect: lower lip spreading, the broad middle lobe 

 much larger than the 2 lateral ones. Filaments scarcely longer than the 

 anthers. 



1. M. vulgare L. Plant 2-9 dm. tall, white-woolly: leaf -blades suborbicular, 

 oval, or ovate, 1— ± cm. long, crenate, rugose: calyx 4-.5 mm. long; lobes 

 hooked: corolla white, 5-6 mm. long; upper lip deeply notched: nutlets about 

 2 mm. long. — Eather common, in waste places and on roadsides, Nat. of Eu, 



— Sum. — HOARHOUND, 



7. AGASTACHE Clayt. Perennial tall herbs. Leaf -blades many-toothed, 

 not rugose. Flowers many in dense panicles. Calyx nearly regular, scarcely 

 ribbed, 5-lobed: lobes erect, the upper ones sometimes broader than the lower. 

 Corolla 2-lipped: upper lip erect: lower lip with 2 small lateral lobes and 

 a large spreading middle lobe. Filaments elongate. — Sum. — Giant-hyssop, 



Calyx-lobes barely acute : corolla greenish-yellow : bracts acute or acutlsh. 



1. A. ncpcioides. 

 Calyx lobes acuminate : corolla purplish : bracts acuminate. 2. A. scrophulariaefoUa. 



1. A. nepetoides (L.) Kuntze. Stems glabrous or nearly so, 1-2 m. tall: 



leaf -blades ovate to ovate-lanceolate, 5-12 cm. long: calyx 5-6 mm. long; lobes 

 ovate or oblong-ovate: corolla 7-9 mm. long, slightly exceeding the calyx: 

 nutlets minutely pubescent. — Common, in thickets and woods. 



2. A. scrophulariaefolia (Willd.) Kuntze. Stems finely hirsute, 1-2 m. tall: 

 leaf -blades ovate to ovate-lanceolate, or elliptic above: calyx 6-7 mm, long; 

 lobes lanceolate: corolla 6-8 mm. long, much exceeding the calyx: nutlets 

 hispidulous. — N. M, Frequent, in woods and fence-rows. — Sandstones and 

 shales, limestones. 



8. NEPETA L. Annual or perennial, erect or diffuse herbs. Leaf- 

 blades toothed or incised. Flowers in axillary clusters which are sometimes 

 borne in racemes. Calyx slightly irregular, 15-ribbed, 5-lobed: lobes rela- 

 tively long, the upper lobes slightly longer than the lower. Corolla 2-lipped: 

 upper lip erect: lower lip spreading, the larger middle lobe toothed. Fila- 

 ments relatively long. 



1. N, Cataria L. Plants pale-green, 3-11 dm. tall, closely pubescent: leaf- 

 blades ovate to triangular-ovate, 4-7 cm. long, crenate or serrate- crenate, 

 mostly cordate: calyx 5-6 mm. long; lobes subulate or lanceolate-subulate: 

 corolla pale, 6-7 mm. long: nutlets about 1 mm. long. ^ — Common, in waste 

 places, and fields and on roadsides. Nat. of Eu. — Sum. — Cat-mint. Catnip. 



9. GLECOMA L. Perennial creeping herbs. Leaf -blades toothed. Flow- 

 ers in axillary clusters. Calyx slightly 2-lipped, 15-ribbed, 5-lobed: lobes 

 unequal, relatively short. Corolla 2-lipped: upper lip erect: lower lip spread- 

 ing, the large middle lobe notched. Filaments relatively short. 



1. G, hederacea L. Plants dark-green, the branches 1-11 dm. long, hirsute: 

 leaf -blades renif orm to suborbicular, 2^ cm. in diameter, coarsely crenate: 

 calyx 5-7 mm. long; lobes subulate-tipped: corolla blue or white, 10-15 mm. 



