Labiatae 



785 



pubescent; filaments witli a dense tuft of long crisped hairs 

 near middle; nutlets ovate, biconvex, about 0.7 mm. long, ob- 

 tusely angled, narrowed below and subtruncate at base. 



Aug.-Oct. Wet places; Honshu, Shikoku, Kyushu. Korea. 



2. Dysophylla verticillala (Ro.xb.) Benth. Mentha 

 verticillata Roxb.; D. japonica Miq. Mizu-neko-no-o. An- 

 nual; stems 10-50 cm. long, sometimes short-creeping at base, 

 usually branched in upper half, glabrous or short-pubescent 



on the nodes; leaves verticillate in 3's to 6's(-10's), linear, 2-5 

 cm. long, 2-4 mm. wide, glabrous; spikes 2-5 cm. long, densely 

 very many-flowered; flowers white, about 3 mm. long inclu- 

 sive of the stamens; calyx about 1.5 mm. long, the teeth ob- 

 liquely ascending in fruit; filaments loosely short-pilose on 

 lower half; nutlets about 0.7 mm. long, pale brown, ovate, nar- 

 rowed at base. Aug.-Oct. Wet places; Honshu, Shikoku, 



Kyushu. Korea, Ryukyus, Formosa, China, and se. Asia. 



26. KEISKEA Miq. Shimobashira Zoku 



Perennials; leaves opposite, toothed; verticils 2-fliowered, forming one-sided spikes, the bracts lanceolate, small, persistent; 

 flowers pedicelled; calyx campanulate, deeply 5-fid, with lanceolate lobes, hairy on the throat; corolla-tube broadened in upper 

 part, with a ring of hairs inside, the limb slightly bilabiate, the lower lip 3-lobed, the midlobe slighdy larger; stamens 4, 

 didymous, exserted, the upper pair shorter, the filaments glabrous; nudets ovate or oblong, smooth. Few species, in e. Asia. 



1. Keiskea japonica Miq. K. japonica var. lancijoUa 



Nakai; K. japonica var. hondoensis Nakai Shimobashira. 



Perennial herb; stems about 60 cm. long, slightly pilose or gla- 

 brous, often branched in upper part; leaves thinly chartaceous, 

 broadly lanceolate to narrowly ovate, 6-15 (-20) cm. long, 

 2-5.5 cm. wide, long-acuminate, abrupdy to long-acuminate, 

 rarely subobtuse at base, acutely toothed except near the base, 

 puberulent on midrib above, glabrous or thinly pilose on the 



nerves beneath, the petioles 5-30 mm. long; spikes 5-12 cm. 

 long, short-pilose, one-sided, the bracts broadly linear; calyx 

 3 mm. long at anthesis, 5-6 mm. long in fruit, nearly as long 

 as the pedicels, exceeding the bracts; corolla white, about 7 

 mm. long, shallowly lobed; nutlets usually solitary, globose, 



dark brown, 1.5-2 mm. across, with darker reticulations. 



Sept.-Oct. Mountains; Honshu (Kanto Distr. and westw.), 

 Shikoku, Kyushu. 



27. ELSHOLTZIA Willd. Naginata-koju Zoku 



Herbs or shrubs; leaves opposite, usually toothed; verdcils many-flowered, in dense one-sided spikes; floral bracts persistent, 

 broadly ovate or obovate-orbicular, dense; calyx equally 5-toothed, without long hairs on the throat, inflated and accrescent in fruit; 

 corolla small, the tube nearly as long as the calyx, the limb 4-lobed, subbilabiate, the upper lip erect, retuse, the lower lip 



spreading; stamens 4, exserted, ascending or spreading, the lower pair longer; nudets ovate to oblong. About 20 species, in 



temperate regions of Eurasia, N. Africa, and Malaysia. 



lA. Bracts depressed-orbicular, nearly glabrous on back, short-ciliate, the awns 1-2 mm. long I.E. ciliata 



IB. Bracts narrowly flabellate, short-pubescent on back, long-ciliate, the awns 2-3 mm. long 2. E. nipponica 



1. Elsholtzia ciliata (Thunb.) Hylander. Sideritis cili- 

 ata Thunb.; Mentha patrinii Lepech.; E. patrinii (Lepech.) 

 Garcke; E. cristata Willd.; E. interrupta Ohwi Naginata- 

 koju. Erect branched annual, 30-60 cm. long; stems ob- 

 tusely angled, loosely soft-pubescent; leaves thinly membra- 

 nous, broadly to narrowly ovate, 6-10 cm. long, 2.5-6 cm. 

 wide, short-acuminate with an obtuse tip, cuneate to broadly 

 cuneate at base, toothed, thinly pubescent above and on nerves 

 beneath, the petioles winged in upper part; spikes terminal 

 and axillary, 5-10 cm. long, 7-8 mm. across, densely many- 

 flowered, one-sided, the bracts depressed-orbicular, short-ciliate, 

 rounded at base, nearly glabrous on back, as long as to slightly 

 longer than the calyx, often purplish, the awns 1-2 mm. long; 

 flowers pale rose-colored, about 5 mm. long; calyx 3-3.5 mm. 

 long in fruit, the teeth spine-tipped; nutlets narrowly obovate, 

 about 1 mm. long, slighdy flattened, broadly rounded at apex, 

 cuneate at base. Sept.-Nov. Hokkaido, Honshu, Shikoku, 



Kyushu; common. s. Kuriles, Korea, Formosa, China, 



temperate Asia to w. Europe. 



2. Elsholtzia nipponica Ohwi. E. oldhamii var. nip- 

 ponica Ohwi; E. argyi var. nipponica (Ohwi) Murata 



Futobo-n.\ginata-k6ju. Resembles the preceding; stems SO- 

 SO cm. long, obtusely angled, short-pubescent; leaves ovate or 

 broadly so, 2.5-6 cm. long, 1.5-4 cm. wide, acuminate or acute, 

 broadly cuneate at base, toothed, glabrous or thinly pubescent 

 on nerves beneath, thinly pilose above, petiolate; spikes 2-5 cm. 

 long, about 10 mm. across, densely many-flowered, one-sided, 

 the bracts long-ciliate, narrowly flabellate, short-pubescent on 

 back, the awns 2-3 mm. long; corolla rose-colored, 4-5 mm. 

 long; nutlets obovate, slighdy compressed, about 1 mm. long. 



Sept.-Oct. Sunny slopes along streams and valleys in 



mountains; Honshu (Kanto Distr. and westw.), Kyushu. The 

 typical phase occurs in China. 



28. PLECTRANTHUS L'Herit. 



Ya.ma-hakka Zoku 



Perennial herbs or sometimes shrubs; leaves toothed; verticils several- to many-flowered, in loose simple or branched racemes; 

 calyx campanulate in anthesis, equally 5-toothed or bilabiate, the upper lip 3-toothcd, the lower lip 2-fid, accrescent in fruit; 

 corolla bilabiate, the tube elongate, gibbous, the upper lip 3- or 4-lobed, the lower lip entire, often navicular; stamens 4, 

 didymous, declined; nutlets ovate or oblong, smooth or granular, sometimes short-pilose. — About 150 species, in Asia, Australia, and 

 Africa. 



