100 LABIATE. (MINT FAMILY.) 



times sparingly toothed; bracts linear, acute; lower lobes of the calyx much longer than 

 the others. 



2. P. parviflora, Bentk Smaller; bracts mostly obtuse; corolla 5 or 6 lines long. 



* * Upper stamens sterile; style sparingly hairy, its lobes very unequal; flowers barely 2 lines 



long. 



3. P. serpylloides, Gr. Stems 3 to 6 inches high; leaves obovate-oval or spatulate, 

 2 or 3 lines long; lower flowers remote and of ten solitary; the upper usually interruptedly 

 spicate. 



7. SPHACELE, Benth. 



Calyx thin, membranaceous and reticulated. Corolla with 5 broad, rather erect lobes, 

 the lower one longest. Anther cells diverging. Somewhat shrubby, veiny-leaved. 



S. calycina, Benth. Villous-pubescent or tomentose, leafy, 2 to 5 ft. high; leaves 2 

 to 4 inches long, ovate or oblong crenate or serrate, or almost entire; the floral, ovate- 

 lanceolate, sessile; flowers an inch long, mostly solitary in the upper axils, purplish or 

 lead-color. 



8. SAL VIA, L. SAGE. 



Calyx bilabiate. Corolla deeply 2-lipped, the upper lip erect, straight or falcate, 

 2-lobed, the lower spreading or drooping, its middle lobe sometimes notched or obcor- 

 date. In our species the upper lip of the calyx is longer than the lower, 3-2-toothed; the 

 lower 2-parted; the teeth spinulose; corolla ringent. 



1. S. carduacea, Benth. White-woolly with cobwebby hairs; stems nearly naked, 

 surrounded at the base with thistle-like leaves; head-like false whorls 1 to 4, an inch or 

 more in diameter, about equaling the involucre of spiny-toothed bracts; corolla 10 to 12 

 lines long, blue or purple. 



2. S. Columbariae, Benth. (CniA.) Soft pubescent; flower whorls lor 2; involu- 

 crate bracts, sometimes purplish; corolla 3 or 4 lines long, blue; leaves not spinescent. 



9. AUDIBERTIA, Benth. 



Sufficiently distinguished from Salvia in the synopsis. Mostly hoary perennials, her- 

 baceous or shrubby; with rugose- veiny, crenulate, sage-like leaves, and densely capitate- 

 glomerate flowers. 



1. A. grandiflora, Benth. Stems 1 to 3 feet high from a somewhat woody base; 

 lower leaves 3 to 8 inches long; floral ones broadly ovate and membranaceous; corolla an 

 inch and a half long; purple-crimson; stamens much exserted. 



2. A. humilis, Benth. A span high, cespitose; leaves mainly radical; spike of 3 or 

 4 small, sessile, head-like clusters; corolla half an inch longer less, bluish purple. 



3. A. stachyoides, Benth. Shrubby, 3 to 8 feet high; style and stamens little 

 exserted; corolla about as the last. 



