776 



Labiatae 



black, subcuneate, acutely 3-angled, slightly compressed, trun- 

 cate at apex, glabrous. July-Sept. Honshu, Shikoku, Kyu- 

 shu. Ryukyus, Formosa, Korea, and China. 



2. Leonurus macranthus Maxim. L. japonicus Miq., 



non Houtt- Kise-wata. Pubescent perennial; stems stout, 



firm, erect, simple or slightly branched; leaves chartaceous, 

 ovate or narrowly so, 6-10 cm. long, 3-6 cm. wide, acute to 

 acuminate, broadly cuneate to truncate at base, incised or with 

 large, deep, acute teeth, the petioles 1-5 cm. long, the upper 



leaves gradually smaller, broadly lanceolate to narrowly ovate, 

 often entire, the petioles about 1 cm. long; flowers few, in 

 interrupted verticils, subsessile, 25-32 mm. long, pink; calyx- 

 teeth prominently spine-tipped, the lower lip of corolla shorter 

 than the upper; nutlets about 2.5 mm. long, cuneate-obovate, 



acutely 3-angled, truncate at apex, black. Aug.-Sept. 



Grassy places and thickets in hills and mountains; Hokkaido, 

 Honshu, Shikoku, Kyushu. Korea, Manchuria, and China. 



15. LAMIUM L. 



Odoriko-so Zoku 



Annuals or perennials; leaves usually cordate, toothed; verticils densely many-flowered, distant or approximate in upper ones, 

 the bracteoles short, linear or lanceolate, sometimes spinelike; flowers purple, white, rarely yellow, sometimes dimorphic; calyx 

 tubular or obconical-campanulate, 5-nerved, 5-toothed; corolla-tube usually exserted, widened toward the throat, the limb bi- 

 labiate, the upper lip erect and concave on back or galeate, the lower lip spreading, 3-lobed, the median lobe larger, retuse, 

 usually narrowed at base; stamens 4, didymous, the anther-locules divergent, barbate or glabrous; nutlets trigonous, smooth or 

 minutely tubercled, usually with acute margin. About 40 species, in temperate regions of Eurasia and Africa. 



lA. Annuals or biennials; flovi'ers less than 2 cm. long, often cleistogamous; corolla-tube usually without a ring of hairs inside. 



2 A. Floral leaves sessile, rather loosely arranged throughout, green; calyx with incurved or erect teeth 1. L. amplexicaule 



2B. Floral leaves short-petiolate, approximate toward top of stems, often somewhat purplish; calyx with obliquely spreading teeth. 



2. L. purpureum 

 IB. Perennials; flowers 15-40 mm. long; corolla-tube with a ring of hairs inside. 

 3A. Flowers 15-22 mm. long; corolla-tube erect; calyx-teeth deltoid-lanceolate, spine-tipped; anther-locules glabrous. 

 4A. Leaves not approximate at any point, loosely arranged. 



5A. Plant 10-25 cm. high, tuberous, stolonlferous; calyx-teeth nearly equal 3. L. chinense var. tuberiferum 



5B. Plants 40-70 cm. high, rhizomatous; outer 2 calyx-teeth longer and connate at base 4. L. ambiguiim 



4B. Leaves of 2 or 3 pairs, crowded toward the top of short stems 5. L. Immile 



3B. Flowers 3.5-4 cm. long; corolla-tube slightly curved upward near base; calyx-teeth linear-filiform, not spine-tipped; anther-locules 

 bearded 6. L. album var. barbatum 



1. Lamium amplexicaule L. Hotoke-no-za. Winter ovate, 1-3.5 cm. long, 1-2.5 cm. wide, obtuse, broadly cuneate 

 annual; stems 10-30 cm. long, sometimes much-branched near to subtruncate at base, coarsely obtuse-toothed, coarsely pubes- 

 base, reddish, sparsely reflexed-puberulent; leaves mosdy basal, cent on both sides; flowers 1-3 in axils, pale purple, 15-20 

 cordate or reniform, 1-2 cm. long and as wide, loosely ascend- mm. long; calyx pubescent, 6-7 mm. long, 5-toothed, the 2 

 ing-pilose, sparsely round-toothed, the floral leaves suborbicu- outer lobes slightly broader; lower lip of corolla about 1 cm. 



lar or flabellate, 1-2.5 cm. wide, sessile; flowers 17-20 mm. long, spreading, the lateral lobes somewhat reflexed. Apr.- 



long, sometimes cleistogamous, in dense sessile verticils, red; May. Kyushu (s. distr.). Ryukyus. The typical phase oc- 



calyx about 5 mm. long with incurved or erect teeth; nutlets curs in Formosa and China. 



about 2 mm. long, trigonous, rounded at apex, narrowed be- 4. Lamium ambiguum (Makino) Ohwi. Leonurus 



low, rounded on back, usually white-spotted. May-June, ambiguus Makino; Loxocalyx ambiguus (Makino) Makino 



Roadsides, cultivated fields, and waste grounds in lowlands; Manekigusa, Yama-kise-wata. Rhizomes rather slen- 



Honshu, Shikoku, Kyushu; common. Ryukyus, Formosa, der, creeping; stems erect, 40-70 cm. long, often branched, re- 

 China, Korea to Europe, N. Africa, and widely adventive else- curved white-pubescent on the angles; lower leaves cordate, 

 where. the petioles 2-7 cm. long, the median deltoid-ovate or deltoid- 



2. Lamium purpureum L. Hime-odoriko-so. Winter orbicular, 3-6 cm. long and as vs'ide, obtuse to acuminate with 

 annual with decumbent branched base; stems erect, 10-25 an obtuse tip, truncate or very broadly cuneate at base, coarsely 

 cm. long, rather soft and stout, slightly pubescent; leaves long- obtuse-toothed or incised, shallowly cordate in the lower ones, 

 petiolate, orbicular-cordate, 1.5-3 cm. long and as wide, ob- pubescent on both surfaces especially on nerves beneath; floral 

 tusely round-toothed, long-pubescent, the floral leaves slightly bracts leaflike or broadly ovate and smaller, the petioles 1-2 

 larger, ovate-orbicular or depressed, often tinged purplish, cm. long; flowers 1-3 in axils, dark red-purple, 18-20 mm. 

 much crowded toward the top of stems, short-petiolate; flow- long; calyx loosely puberulent, about 8 mm. long in back, 11 

 ers dense in sessile verticils, about 1 cm. long; calyx-teeth mm. long in front, oblique at the mouth, the teeth narrowly 

 ciliate, obliquely spreading; nutlets broadly obovate, 1.5 mm. deltoid, spine-tipped, ascending; lower lip of corolla 7-8 mm. 

 long, acutely 3-angled, obliquely truncate at apex, rounded on long, spreading; nutlets obovate-cuneate, 2.5-3 mm. long, 3- 



back. Apr.-May. Naturalized in our area. Europe and angled, rounded at apex. Sept. Woods in mountains; 



Asia Minor and widely adventive in N. America. Honshu (Sagami Prov. and westw.), Shikoku, Kyushu. 



3. Lamium chinense Benth. var. tuberiferum (Ma- 5. Lamium humile (Miq.) Maxim. Ajuga humilis 

 kino) Murata. Leonurus tuberiferus Makino; Matsumurella Miq.; Loxocalyx humilis (Miq.) Makino; Ajugoides humilis 



tuberijera (Makino) Makino; Lamium tuberiferum (Makino) (Miq.) Makino Yama-jio. Rhizomes slender; stolons 



Ohwi HiME-KisE-WATA. Stoloniferous perennial herb filiform, branched and creeping; stems 5-10 cm. long, ascend- 



with tubers; stems 10-25 cm. long, simple or branched at base, ing from the base, rather densely white-pubescent, simple, or 



recurved-pubescent in lower part; leaves deltoid to rhombic- with 2 or 3 pairs of approximate leaves toward the top: leaves 



