MINT FAMILY 419 



Kefs. — POGOQTNE ZIZTPHOROIDES Benth., PI. Hartw. 330 (1849), type loc. "Sacramento Val- 

 ley," Hartweg 293 (east side upper Sacramento Valley; cf. Erythea 5:55) ; Jepson, Fl. W. Mid. 

 Cal. 462 (1901), ed. 2, 361 (1911), Man. 874 (1925). Sedeomoides zizyphoroides Briq.: Engler 

 & Prantl, Nat. Pflzfam. 43'':295 (1896). 



5. P. serpylloides Gray. Stems several from the base, very slender, diffuse, 

 3 to 6 (or 9) inches long, or sometimes solitary and erect ; leaf -blades obovate-oval 

 or shortly spatulate, 2 to 4 lines long, petioled; whorls except the terminal ones dis- 

 tinct, the lower with few or even solitary flowers; bracts sparsely hairy; flowers 

 inconspicuous ; calyx-lobes lanceolate, all longer than the tube, equaling or exceed- 

 ing the violet or bluish corolla ; corolla 1 to 2 lines long, short-pubescent outside ; 

 sterile stamens small, with rudiments of anthers or with none ; style a little bearded 

 above; nutlets elliptic or obovoid, V2 line long, often mottled. 



Grassy moist places or in shade of brush in the foothills, 500 to 4000 feet : Coast 

 Ranges from Humboldt Co. to San Luis Obispo Co. ; region of the Marysville Buttes; 

 Sierra Nevada foothills from Eldorado Co. to Mariposa Co. Also in northern Lower 

 California. Apr. -June. 



Tax. note. — The threadlike stems of Pogogyne serpylloides are characteristically much more 

 slender than those of P. zizyphoroides ; moreover, the stems of the former are typically very spread- 

 ing, while those of the latter are usually erect. Nevertheless, these two species occasionally simu- 

 late each other closely in habit. Size of nutlets has been advantageously used as a basis for specific 

 distinction by J. T. Howell. There is also a distinction in the character of the bracts. In P. serpyl- 

 loides the bracts are nearly glabrous or only weakly hairy; in P. zizyphoroides the bracts are 

 conspicuously ciliate and hirsute (Man. Fl. Plants Cal. 874). This distinction, according to R. F. 

 Hoover (ms. note), is as reliable as the nutlet character. 



Locs. — Coast Ranges : Butler Valley, Mad River, Tracy 5829 (coarser and more hirsute than 

 in plants of the species far southward and therefore doubtfully referred here. — J. P. Tracy) ; 

 Eowe's sta., Mendocino Co., Chandler 1060; Healdsburg (Proc. Cal. Acad. ser. 4, 20:123) ; Berke- 

 ley, Bioletti; Livermore, Jepson; Morrison Canon, Niles, Jepson 14,913; Stanford, C. F. Baker 

 543; Los Gatos (hUls w.). Heller 7372; San Juan, San Benito Co., Guirado 714; ridge betw. San 

 Benito River and Bitterwater, Hall 9911; Arroyo Grande, Alice King. Region of Marysville 

 Buttes: Live Oak, Sutter Co., Ewan 9535. Sierra Nevada: New York Ravine, Eldorado Co., K. 

 Brandegee ; Willow Sprs., Amador Co., Jepson 15,233 ; New York Falls, Amador Co., Hansen 447; 

 Black Creek, 5 mi. ne. of Copperopolis, Calaveras Co., Tracy 5635 ; Burson, Calaveras Co., Jepson 

 9926; Columbia, Tuolumne Co., Jepson 6296; Bullion, Mariposa Co., Jepson 10,729. 



Befs. — PoQOGTNE SERPYLLOIDES Gray, Proc. Am. Acad. 7:386 (1868); Jepson, Fl. W. Mid. 

 Cal. 462 (1901), ed. 2, 361 (1911), Man. 874 (1925). Hedeoma (?) serpylloides Torr., Pac. B. 

 Eep. 4:123 (1857), type loc. Martinez, Contra Costa Co., Bigelow. Hedeomoides serpylloides 

 Briq. ; Engler & Prantl, Nat. Pflzfam. 43* : 295 (1896). P. serpylloides subsp. typica J. T. Howell, 

 Proc. Cal. Acad. ser. 4, 20:122 (1931). P. serpylloides subsp. intermedia J. T. Howell, I.e. 20:125 

 (1931), type loc. San Juan, San Benito Co., Guirado 714. 



13. HEDEOMA Pers. 



Low aromatic herbs. Leaves small, entire or sparingly toothed. Flowers small, 

 in cymes. Cymes few-flowered, borne in the axils of the reduced upper leaves, their 

 bracts small. Calyx mostly 13-nerved, usually gibbous at base, in ours unequally 

 5-toothed, the 2 lower teeth longer than the 3 upper ones, the throat bearing a dense 

 sharply defined ring of erect hairs within. Corolla blue or purple, 2-lipped ; upper 

 lip erect, entire or 2-lobed ; lower lip 3-lobed, spreading. Lower pair of stamens 

 anther-bearing, the upper pair represented by reduced filaments or wanting. Nut- 

 lets smooth, the calyx-throat commonly contracted in fruit. (From the Greek 

 hedus, sweet, and osme, odor, some ancient sweet-smelling herb known to the Greeks. ) 



1. H. nana Briq. Stems many from the perennial base, erect, wiry, 3 to 8 inches 

 high; herbage puberulent; leaf-blades ovate, entire, ll^ to 3 lines long, short- 

 petioled; flowers 2 to 5 in the opposite leaf -axils, pedieelled; corolla 3 to 4 lines long; 

 middle lobe of lower corolla lip a little cupped, the lateral lobes low, broad, rounded. 



Crevices of rocks and under ledges on mountain slopes and in dry sandy-gravelly 

 stream beds, 3000 to 4500 feet : Providence Mis., eastern Mohave Desert. South to 

 Mexico, east to Texas and Colorado. May. 



