416 LABIATAE 



serrate, puberuleut or subglabrous above, 6 to 9 lines long, on petioles 3 to 6 lines 

 long; bracts as in A. lanceolata; corolla white, 6 lines long, sliallowly 2-lipped as 

 compared with A. lanceolata ; lower lip with a curved band of hairs on the palate ; 

 corolla-tube slender, 1 line long, expanded into the upwardly dilated throat which 

 is glabrous within or with a sparsely pubescent zone on the lower part; stamen 

 pairs nearly equal; anthers woolly; style glabrous. 



Dry clay soil of hill slopes, 1000 to 5000 feet : inner South Coast Range from 

 San Benito'Co. to Mt. Piiios. May-July. 



Eeol. note. — Acanthoniintha obovata exhibits a disposition to occur in colonies about 5 to 30 

 yards in diameter. It seems to be limited to the friable adobe of flats, ridges and divides. A charac- 

 teristic station is that in the pass at the head of Los Gatos Creek, inner South Coast Range, south- 

 western Fresno County. By early summer the light-colored adobe has checked, as 

 a result of desiccation, into irregular blocks forming quadrilateral or octagonal 

 patterns. The checks or cracks in the soil, 1 to IVi inches wide, are 1 to IV2 feet 

 deep or more. These dry but friable adolie blocks furnish an optimum substratum 

 for Acanthoniintha obovata colonies which come into full flower about June 1. 

 The openly wooded country which they inhabit supports Quercus douglasii and 

 Pinus sabiniana and a little Aesculus californica. 



Loes. — Bettys ranch, Lorenzo Creek, San Benito Co., Jepson 12,219; Los 

 Gatos Creek (divide at head of), w. Fresno Co., Jepson 12,185; Cholame Creek 

 (upper end), se. Monterey Co., Jepson 15,911; Lockwood VaUey, n. Ventura Co., 

 Bacigalupi 2353. 



Ref. — AcAXTHOMiNTHA OBOVATA Jepson, Man. 873, fig. 819 (1925), type loc. 

 Lorenzo Creek, San Benito Co., JuJia A. Bettys, (typ. in Herbario Jepsoniano). 



12. POGOGYNE Benth. 



Fig- 43 2. hov^ sweet-aromatic annuals with obovate or oblanceolate leaves 



MixTH JoBO- narrowed to a petiole. Whorls crowded in dense spikes or the lower 

 vATA Jepson; whorls distinct. Bracts and calyx usually hirsute. Calyx unequally 

 fl., X 2M>- 5-cleft, the two lower teeth longer; tube mostly 15-nerved; throat 



naked. Corolla straight, tubular-f unnelf orm, purple or bluish ; upper 

 lip erect, entire; lower spreading, with 3 similar oval lobes. Stamens 4, all with 

 anthers, or the upper shorter pair sterile. Style somewhat exserted, in some (per- 

 haps all) species flattened above and always bearded. Nutlets smooth, hairy at 

 apex. — Species 6, western North America. (Greek pogon, beard, and gune, female, 

 on account of the hairy style.) 



All four stamens with perfect anthers ; style conspicuously bearded above, its lobes almost equal ; 

 corollas 4 to 9 lines long, plainly exserted from the bracteate heads. 

 Whorls of flowers in dense spikes, the spikes oblong or cylindric, 9 to 12 lines broad, with few 



if any lower separate whorls; stems typically stoutish 1. P. douglasii. 



Whorls of flowers remote or the uppermost in a terminal spike; stems t^-pically slender. 



Calyx-lobes glabrous on the back and margin, hairy inside; bracts inconspicuously hairy 



or subglabrous; whorls or spikes G to 9 (or 12) lines broad 2. P. nudiuscula. 



Calj-x -lobes hirsute-cUiate and hairy on back; bracts densely white-ciliate toward base; 



whorls or spikes 2 to 4 (or 5) lines broad 3. P. abramsii. 



LTpper stamens sterile; style sparingly hairy, its lobes very unequal; corollas smaller (1 to 4 lines 

 long), hidden in bracteate heads. 

 Stems a little stout; whorls or spikes G to 9 (or 5 to 12) lines broad; bracts conspicuously 



ciliate with white bristly hairs ; nutlets % to 1 line long 4. P. zhyphoroides. 



Stems slender ; whorls or spikes 4 to 6 lines broad ; bracts sparsely ciliate with soft hairs ; 

 nutlets hardly V^ line long 5. P. serpylloides. 



1. P, douglasii Benth. (Fig. 433.) Stem freely branched from the base or 

 sometimes simple, 4 to 10 inches high, rarely 2 feet high; leaf-blades oblanceolate 

 or obovate, % to 1^/4 inches long, narrowed to a petiole ; 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 con- 

 spicuously ciliate with white hairs; lower divisions of calyx longer than tube; cor- 

 olla purple or bluish, the palate white, dotted with purple, pubescent, 5 to 9 lines 

 long; stigmas subequal; nutlets smooth, often mottled, minutely hispid at the apes. 



