208 



MINT FAMILY 



A. Calyx regular and its teeth nearly equal. 



Corolla nearly regular, the lobes being alike. 

 Flower-clusters in the leaf-axils. 



Stamens long-exserted, much curved 1. 



Stamens straight 10. 



Flowers in terminal heads 8. 



Corolla decidedly 2-lipped. 

 Flowers in whorls, pale. 



Corolla with upper lip concave, hood-like 6. 



Corolla-lobes all flattish 9. 



Flowers in a dense spike, lavender; herb 3. 



Flowers in a leafy raceme, white; shrub 7. 



Trichostema. 



Mentha. 



monardella. 



Stachys. 



KOELLIA. 



Agastache. 

 Sphacele. 



B. Calyx 2-lipped or its teeth very unequal. 

 Flowers in a dense spike; perennial; leaves nearly entire. 4. Prunella. 



Flowers in whorls; annual; leaves lobed 5. Salvia. 



Flowers solitary in the leaf-axils 2. Scutellaria. 



1. TRICHOSTEMA. Blue-curls. 



1. T. oblongum Gray. A leafy annual, 18 in. or less high, 

 soft-pubescent. Leaves oblong, obtuse, entire, yi to V/2 in. 

 long. Flowers blue, in small lateral clusters. Corolla ex- 

 serted, curved, the lobes nearly alike. Stamens 4, long- 

 exserted and curved. — Half-grassy places in the foothills and 

 up to at least 4500 ft. Immediately known by the turpentine- 

 like odor of its herbage. 



2. SCUTELLARIA. Skull-cap. 



Ours perennial herbs with flowers solitary or in pairs in 

 the upper leaf-axils. Calyx with 2 short entire lips, the upper 

 with a hood-like projection. Corolla with long-exserted tube 

 and beak-like upper lip, the lower lip seemingly 1-lobed. 

 Stamens 4, all perfect and parallel. 



1. S. angustifolia Pursh. Plant 4 to 12 in. high, nearly 



glabrous. Leaves narrowly 

 oblong, narrowed to the base 

 (except the lower), entire, ^2 

 to V/4 in. long, the upper ones 

 smaller. Flowers bluish vio- 

 let, 24 to 1 in. long, in the 

 axils of shorter leaves. 



This skull-cap is of fre- 

 quent occurrence at middle 

 altitudes throughout the Si- 

 erra Nevada, often growing 

 in small beds modestly orna- 

 mented by the many blue flowers. Mrs. Alice Merritt David- 

 son, who observed this plant in southern California, reports 



