414 LABIATAE 



obtuse, truncate or obtuse at base, erenulate, plane or eventuaUy revolute, % to 1% 

 inches long, the upper surface scaberulous-rugailose, the lower surface markedly 

 reticulate with hispidulose veins and sprinkled with glandular dots ; petioles wing- 

 margined, short (V2 to 3 lines) or none; leaves of the short sterile lateral spurs 

 fascicled, the blades linear, strongly revolute, Yo to % inch long ; branehlets with 

 1 to 4 flower-whorls ; bracts ovate to lanceolate, cuspidate, ciliate, rather membra- 

 nous ; calyx 2-lipped, the upper lip bearing at apex 3 short spine-tipped teeth, the 

 lower lip shorter, deeply cleft, the 2 teeth acuminate-spinose ; corolla purplish, 8 

 to 9 lines long, the tube extensively hairy within; upper lip short, rounded, cleft, 

 the lower lip much longer, its middie lobe transversely elliptic, broadly notched, 

 erosulate or sparingly incised, tlie lateral lobes small ; stamens well-exserted, 7 to 

 9 lines long, the filaments with a tooth at the joint. 



Kocky caiions or mesas, 1000 to 4500 feet : mountains on west side of the Colorado 

 Desert (San Jacinto ilts. to ilt. San Ysidro). Apr.-Maj^; Nov. 



Locs. — Palm Canon of San Jacinto, Jepson 1397; Martinez Canon, Santa Rosa Mts., Childs; 

 Piiion Flat, Santa Rosa Mts., Gilman 710; Eockhouse Canon, n. of Collins Valley (Bull. S. Cal. 

 Acad. 2G:23) ; Indian Canon, s. side of Collins Valley (n. side Mt. San Ysidro). 



Ref. — Salvia EREMOST.iCHTA Jepson, Man. 870 (1925), type loo. Indian Caiion, s. of Collins 

 Valley, ne. San Diego Co., Jepson 8847. 



10. MELISSA L. 



Lemon-scented perennial herbs with broad leaves and white flowers in loose 

 axillary clusters. Calyx narrowly campanulate, 13-nerved, deflesed in fruit, the 

 upper lip spreading, almost truncate, its 3 teeth short and broad, the lower lip 

 longer, erect, 2-parted into lanceolate-acuminate lobes. Corolla exserted, nearly 

 twice as long as the calyx, 2-lipped ; upper lip erect, notched ; lower lip spreading, 

 3-eleft. Stamens 4, converging under the upper lip. — Species 4, Europe and Asia. 

 (Greek melissa, a bee, the bees visiting the flowers for honey.) 



1. M. officinalis L. Garden Balm. Stems slender, 1 to 4 feet high ; stems and 

 petioles short-villous or glabroiis ; leaf-blades ovate, crenate, truncate at base, hirsu- 

 tulose, or often glabrous beneath, 1 to 2I2 inches long, the petiole V3 to % as long; 

 corolla yellowish or whitish, 5 lines long, its tube with an obscure oblique ring of 

 long hairs. 



Native of Europe, escaped from gardens into shady woods or along stream banks, 

 100 to 1800 feet : Coast Kanges. July- Aug. 



Locs. — Trinity River Valley near the South Fork, Tracy 7232; South Fork Eel River, Hum- 

 boldt Co., Jepson 16,472 in 1932 (Dyerville), 17,854 in 1936 (Phillipsville) ; Guerneville, Sonoma 

 Co., Davi/ 4146 in 1896; Napa River near St. Helena, Jepson 16,904 in 1934; Piilo Alto Creek, 

 Marin Co., Congdon in 1897 : Stonybrook Canon, Niles, Carter 939 in 1935 ; betw. Boulder Creek 

 and Big Basin, Santa Cruz Mts., V. F. Hesse 144 in 1940. 



Refs. — Melissa officinalis L., Sp. PI. 592 (1753), type from south central Europe; Jepson, 

 Fl. W. Mid. Cal. 462 (1901), ed. 2, 361 (1911), Man. 872 (1925). 



11. 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 

 chartaceous bracts armed with needle-like spines. Calyx 2-lipped; upper lip 3- 

 toothed, the teeth aristate ; lower lip short, 2-cleft into oblong acute lobes. Corolla 

 white, or sometimes partially rose-color, 2-lipped, exceeding the calyx; upper lip 

 entire or retuse, a little hooded ; lower lip 3-lobed. Stamens 4, inserted high in the 

 ample throat; lower pair fertile; upper pair with smaller or imperfect anthers. 

 Nutlets smooth. (Greek acantha, thorn, and mentha, mint.) 



Style hairy; corolla-tube gradually enlarged upw.nrd into ampliate throat; anthers glabrous; nut- 

 lets about 1 line long; bracts and upper part of stems villousg!audular....l. A. hin<^eola1a. 



