MINT FAMILY. 461 



connective capillary, 1 line long; rudiments of sterile stamens obvious. 

 — (Audibertia grandiflora Benth.) 



Coast Ranges from the Vaca Mountains, Jit. Diablo and San 

 Francisco southward to Santa ^Monica. Apr.-May. 



9. ACANTHOMINTHA Gray. 



Annuals with dentate leaves and flowers in distinct or at length 

 remote whorls, each whorl subtended by a pair of leaves and a circle 

 of broad callous-margined bracts armed with needle-like prickles. 

 Calyx bilabiate; upper lip 3-toothed, the teeth aristate; lower lip 

 short, 2-cleft into oblong acute lobes. Corolla-tube exceeding the 

 calyx, naked within; upper lip entire, oblong; lower lip 3-lobed, the 

 middle lobe deeply and the lateral slightly emarginate. Stamens 4, 

 inserted high in the ample throat; lower pair fertile; upper pair 

 shorter with imperfect anthers. Nutlets smooth. (Greek acantha, 

 thorn, and ^Mentha, Mint.) 



1. A. lanceolata Curran. Stoutish, branching from the base, 

 soft-pubescent, oily and ill-scented, 7 to V2 in. high; leaves oblanceo- 

 late or oblong, sparingly dentate, tapering at base into a slender 

 petiole; bracts elliptic-ovate, 5 lines long, the aristate prickles 3 or 

 4 lines long; upper lip of corolla somewhat falcate-incurved, cleft 

 at apex; lower with oblong entire lobes. 



Alameda Co. (first collected in Calaveras ^'alley), southward in 

 the Cqast Ranges. June. 



10. POGOGYNE Benth. 

 Low sweet-aromatic annuals with obovate or nblanceolate leaves 

 narrowed into a petiole. Whorls crowded into dense sjjikes or the 

 lower whorls distinct. Bracts and calyx hirsute. Calyx unequally 

 and deeply 5-cleft, the two lower teeth longer; tube mostly 15-nerved; 

 throat naked. Corolla straight, tubular-funnelform, blue or purplish; 

 upper lip erect, entire; lower spreading, with 3 similar oval lobes. 

 Stamens 4, with anthers, or the upper shorter pair sterile. Style 

 somewhat exserted, in some (perhaps all) species flattened above and 

 always bearded. (Greek pogon, beard, and gune, female, on account 

 of the hairy style. ) 



All 4 stamens anther-bearing; corolla large, much longer than calyx ; bracts 

 conspicuously ciliate with white hairs. 

 Bracts linear, acute . . ..... . 1. P. Douglasii. 



Bracts obtuse 2. P. parvijiora. 



Lower pair of stamens anther-bearing, the upper with mere rudiments of 

 anthers or none; corolla about equaling (scarcely longer than) calyx; 

 bracts sparsely hairy. 

 Plants very slender, diffuse. . . . . 3. P. serpyiloidcs. 



Plants stoutish, erect . . 4. P. ziziplioroirUs. 



1. P. Douglasii Benth. Commonly low (4 to G in. high) and 

 branched from the base, ofttimes simple and as much as 2 ft. high; 

 leaves oblanceolate or obovate and narrowed to a petiole, f to IJ in. 

 long; whorls forming a dense terminal spike, often with a single 

 accessory whorl in the adjacent axil below, or sometimes several of the- 

 lower axils with flowers; bracts cuspidate, the margin ciliate with 



