194 FOUNDATIONS OF BOTANY 



Lips toothed and cleft. Plants aromatic. Leaves 

 extremely small. Thymus, IX. 



(b) CahTc not 2-lipped, or not much so. 



Calyx tubular, 5-10-toothed. Stamens not projecting 

 from tube of corolla. Marrubium, II. 



Calyx tubular, with 5 equal teeth. Stamens under 

 upper lip of corolla. Nepeta, III. 



Calyx tubular, bell-shai:)ed, with 5 awl-shaped teeth. 

 Stamens not turned down after maturing. 



Lamium, Y. 



Calyx top-shaped, with spreading spiny teeth. 



Leonurus, VI. 



Calyx as in No. 5. Stamens turned down after ma- 

 turing. Stachys, YII. 



B. 



Stamens 2. Salvia, VIII. 



I. SCUTELLARIA, L. 



Mostly slender herbs, not aromatic. Flowers solitary or in 

 i^airs, axillary or in terminal spikes or racemes. Calyx bell- 

 shaped, 2-lipped, the upper part swollen into a helmet-shaped 

 pouch ; mouth of the calyx closed after flowering. Corolla- 

 tube long, naked inside. Stamens 4, the anthers meeting in 

 pairs, hairy -fringed. Style with a very short upper lobe. 

 [The species here described are not the commonest ones, but 

 most of the others grow in damp soil and bloom later.] 



1. S. serrata, Andrews. Skullcap. Stem not much branched, 

 1-3 ft. high. Stem-leaves serrate, taper-pointed at both ends, ovate 

 or nearly so. Racemes single, loose. Calyx rather hairy. Corolla 

 1 in. long, the lips of equal length. Woods. 



2. S. pilosa, Michx. Hairy Skullcap. Stem more or less hairy, 

 not much if at all branched, 1-3 ft. high. Leaves a few distant 

 pairs, diamond-ovate, oblong-ovate, or roundish-ovate, scalloped, 

 obtuse, the lower heart-shaped or nearly truncate at the base, with 

 long petioles. Kacemes short, few-flowered. Corolla ^ in. long, 



