446 liABIATAE 



Locs. — Dry Lagoon (near Stone Lagoon), Tracy 13,513; Big Lagoon, Tracy 7284. First 

 records for California. 



Ref. — Ltcopus uniflords Mielix., Fl. 1:14 (1803), type loe. region of lakes St. John ami 

 Mistassini, Quebec, Can. 



23. MENTHA L. Mint 



Very odorous perennial herbs, mostly with slender creeping rootstocks, usually 

 tomentose or hairy and with rather small flowers in whorls, which are either remote 

 or spicate or capitate. Calyx eampanulate or short-tubular, commonly 5-tootlied, 

 nearly regular, or 2-lipped. Corolla with a short tube; upper lip emarginate or 

 entire, scarcely or not at all larger than the lobes of the lower lip. Stamens 4, erect 

 and nearly equal. Nutlets smooth. — Species 20, all continents except South Amer- 

 ica. (Ancient Greek name.) 



Flower-whorls remote or distant, borne in the leaf axils ; corolla puberulent or hairy. 



Stems leafy to the top, the leaves subtending the flower-whorls more or less petioled, spreading 

 mdely and much exceeding the flowers; calyx-teeth triangular, similar and equal or 



nearly so 1. M. arvensis. 



Stems with the upper leaves subtending the flower-whorls reduced and bract-like, turned do-ivn- 

 ward, sessile or subsessile ; calyx-teeth dissimilar, the 3 upper triangular-acuminate, 



the 2 lower lanceolate-subulate -2. M. pulegium. 



Flower-whorls approximate, in terminal leafless spikes or the lowermost in the upper leaf axils; 

 corolla glabrous. 

 Leaves petioled; spikes 5 to 9 lines wide. 



Leaf -blades ovate, mostly very acute, obtuse at base, much longer than broad ; spikes 5 



to 6 lines wide - 3. M. piperita. 



Leaf -blades broadly ovate, less acute, truncatish at base, sometimes nearly as broad as 



long; spikes 8 to 9 lines wide 4. M. citrata. 



Leaves sessile or nearly so; spikes slender (3 lines vidde), mostly interrupted. 5. M. spicata. 



1. M. arvensis L. var. canadensis Briq. Field Mint. Tule Mint. (Fig. 

 445.) Stems simple or much branched, erect, 1 to 4 feet high, leafy to the top ; herb- 

 age puberulent or sometimes partly glabrous; leaf -blades ovate to oblong-lanceolate, 

 sharply serrate, 1 to 2% inches long, shortly petioled ; flower whorls 5 to 15 (or 25), 

 very much shorter than the leaves (even the uppermost), sometimes shorter than 

 the petioles ; calyx pubescent, its eiliate teeth triangular, acuminate, 14 to 1/3 as 

 long as the tube ; corolla dull white, lavender, purplish or pinkish, glabrous or sub- 

 glabrous; stamens well-exserted. 



Kiver lowlands, coastal marshes and montane meadows, 10 to 7500 feet, com- 

 mon : Laguna, San Jacinto and San Bernardino mountains of Southern California ; 

 North Coast Ranges from Sonoma Co. to Humboldt Co. ; lower San Joaquin Valley; 

 Sacramento Valley ; Sierra Nevada from Tulare Co. to Siskiyou and Modoc Cos. ; 

 east side of Sierra Nevada from Inyo Co. to Modoc Co. East to Connecticut, north 



to Canada. July-Oct. 



Locs. — San Diego Co.: Witch Creek, Alderson; Ramona, E. Brandegee. Coast Ranges: 

 Alexander Valley, ne. Sonoma Co., Jepson 9485; Mad River near Areata, Jepson 17,936. Great 

 Valley: Rough & Ready Isl., San Joaquin Co., Berg; Sherman Isl., San Joaquin Co., Jepson 

 10,21t;; Suisun Marshes, Jepsan 14,918; Ryer Isl., lower Sacramento River, Jepson 14,919; Putah 

 Creek near Winters, Jepson 14,916 ; Sacramento, Michener ^- Biolctti. 



In the high mountains of Southern California and in the Sierra Nevada occur forms with 

 glabrous or subglabrous leaves as follows: Var. glabrata Fer., flower whorls few (mostly 4 to 6), 

 the upper leaves subsessile. — Noble Mine, San Diego Co., Chandler 5494 ; Bluff Lake, San Bernar- 

 dino Mts., R. D. WUliams; Kern River, Tulare Co., Culherlson 4283; Truckee, Sonne 7107; Jess 

 Valley, Warner Mts., L. S. Smith 1062; Yreka, Butler 170. In the same high montane region 

 occur" also glabrous forms (a) with many flower-whorls and uppermost leaves petioled. — Mark- 

 wood Mdw., Fresno Co., Jepson 16,052; Mono Hot Sprs., South Fork San Joaquin River, A. L. 

 Grant 1485; Long Valley, Lassen Co., Jepson 7784; Mineral, Tehama Co., J. Griiuiell : Sisson, 

 Siskiyou Co., Jepson 14,917. Also glabrous forms (b) with few flower-whorlg and markedly 

 petioled leaves. — Jess Valley, Warner Range, Modoc Co., Jcjison 7944. Also glabrous forms (c) 

 with many flower-whorls and uppermost leaves subsessile. — Hetch-Hetchy, A. L. Grant 880; Dana, 

 ne. Shasta Co., Jepson 5757. There is, therefore, no definite segregation of structural characters 

 separating a var. glabrata as including all or any major part of the Sierran forms, nor is there any 



