768 



Labiatae 



5A. Plant gray-green, prominently white-pubescent perennial herb without stolons; upper leaves abruptly reduced to bracts. 



4. A. nipponensis 



5B. Plant vivid-green, hirsute perennial herb with long stolons; upper leaves gradually reduced to bracts S. A. shikptanensis 



3B. Verticils not forming a distinct terminal spike. 



6A. Stems erect; lower leaves reduced to scales. 



7A. Corolla white with purple striations, 10-11 mm. long at back; stems erect 6. A. yezoensis 



7B. Corolla purple, 13—16 mm. long at back; stems ascending 7. A. maliinoi 



63. Stems decumbent; lower leaves not scalelike. 



8A. Stems decumbent, tufted, 5-10 (-15) cm. long, stolons absent 8. A. decumbens 



SB. Plant stoloniferous, 1-5 cm. long 9. A. pygmaea 



1. Ajuga incisa Maxim. Hiiragi-so. Thinly pubes- 

 cent or nearly glabrous short-rhizonnatous perennial; stems 

 erect, rather stout, 30-50 cm. long; leaves membranous, ovate 

 to broadly so, 6-10 cm. long, 4-6 cm. wide, acute, rounded to 

 shallowly cordate at base, acutely incised and toothed, the peti- 

 oles 3-5 cm. long; verticils often loosely arranged in the lower 

 ones, becoming capitate and spicate above, the bracts broadly 

 lanceolate, slightly longer than the calyx; calyx 5-fid, glabres- 

 cent, the lobes lanceolate; corolla dark blue-purple, the tube 

 about 20 mm. long, ampliate above, the limb rather small, the 

 upper lip short, broad, 2-lobed; nutlets obovate-oblong, 2.5 

 mm. long. May- June. Damp woods along streams; Hon- 

 shu (Kanto and centr. distr.). 



2. AJuga japonica Miq. A. japonica var. grossedentata 



Fr. & Sav.; A. grossedentata Fr. & Sav. Ogi-kazura. Plant 



loosely pubescent, with long multicellular crisped hairs; stolons 

 from lower nodes after anthesis; rhizomes short; flowering 

 stems 8-20 cm. long, erect, few-leaved, with few scalelike 

 leaves at base, obtusely angled; leaves spreading, broadly ovate 

 to ovate-cordate, 2-5 cm. long, 1.5-3.5 cm. wide, obtuse, some- 

 times acute, usually with 2 or 3 short incisions on each side, 

 the petioles 2-5 cm. long; leaves on stolons rather small, loosely 

 arranged, the petioles 1-2 cm. long; verticils few-flowered, the 

 lower loosely arranged, the upper few pairs forming a short 

 headlike spike, the bracts prominent, rather leaf like; corolla 

 pale purple, the mbe about 2 cm. long, ampliate above, the 

 upper lip about 4 mm. long, shallowly 2-lobed, the lobes 

 broadly elliptic, rounded at apex; nudets about 2 mm. long. 



Apr.-May. Damp woods in mountains; Honshu, Shi- 



koku, Kyushu; rare. 



3. Ajuga ciliata Bunge var. villosior A. Gray ex Nakai. 

 A. ciliata sensu auct. Japon., non Bunge Kai-jindo. Promi- 

 nently pubescent with multicellular long whitish hairs; rhi- 

 zomes short-creeping; stems erect, often slightly purplish red, 

 30-40 cm. long, somedmes slightly branched, rather stout, 4- 

 angled; lower leaves spathulate or scalelike, small, deciduous, 

 the middle one ovate to broadly so, 3-8 cm. long, 2-4.5 cm. 

 wide, subacute, broadly cuneate at base, with few irregular 

 coarse teeth, the petioles 5-10 mm. long, winged in upper part; 

 bracts narrowly ovate, obtuse, often purplish red, longer than 

 the calyx; verticils dense, forming a terminal cylindrical spike; 

 flowers blue-purple, tlie tube 10-12 mm. long, the upper lip 

 1-1.5 mm. long, 2-lobed; nutlets about 2 mm. long. May- 

 June. Hokkaido, Honshu, Kyushu. 



4. Ajuga nipponensis Makino. A. decumbens var. 

 typica Fr. & Sav.; A. genevensis var. pallescens Maxim., pro 



parte Juni-hitoe. Grayish soft pubescent; rhizomes 



short; stems suberect, 10-25 cm. long, with few pairs of scale- 

 like leaves at base; leaves 2 to 4 pairs, the median ones obovate- 

 spathulate, broadly oblanceolate, or oblong, 3-5 cm. long, 1.5- 

 2 (-3) cm. wide, obtuse to rounded, with few coarsely undulate 

 teeth, the winged petiole 1.5-3 cm. long; spikes terminal, soli- 

 tary, 4-8 cm. long, the lowest verticil usually distant, the bracts 



broadly oblanceolate; flowers pale blue, many, the upper lip 

 ovate, about 1.5 mm. long, shortly 2-fid, about 2/5 as long as 

 the lower lip, the lower lip nearly as long as the tube, retuse 



and mucronate; nutlets about 1.5 mm. long.- Apr.-May. 



Low mountains; Honshu, Shikoku. 



5. Ajuga shikotanensis Miyabe & Tatew. A. genevensis 

 var. pallescens Maxim.; A. reptans var. japonica Makino; A. 

 glabrescens Makino, excl. syn.; A. pallescens (Maxim.) Nakai, 



non Price & Metcalf Tsoru-kako-so. Plant stoloniferous; 



rhizomes short; stems usually solitary, simple, erect, 10-25 cm. 

 long, rather prominently long-hirsute; basal leaves rosulate; 

 cauline leaves few, narrowly obovate to spathulate-oblong, 2-4 

 cm. long, 1-2 cm. wide, obtuse, cuneate at base, sessile or sub- 

 sessile, loosely hirsute, with few undulate teeth, the upper 

 leaves gradually reduced to bracts; leaves of stolons spathulate, 

 petiolate; spikes with 5-10 rather loose verticils; flowers pale 

 purple; corolla-tube 6-7 mm. long, the upper lip scarcely 1 

 mm. long, bilobed, the lower lip erect, scarcely shorter than 

 the tube, spreading, the midlobe cuneate-obovate, notched at 



the apex; nutlets about 1.5 mm. long. May- June. Sunny 



hills; Honshu; rather rare. s. Kuriles. 



6. Ajuga yesoensis Maxim. Nishikigoromo, Kimmon- 

 so. Sparingly crisped-pilose; rhizomes short; stems erect, 8-15 

 cm. long, rather slender, with 2 or 3 pairs of scales at the base; 

 leaves 3 or 4 pairs; the median ones oblong to broadly ovate, 

 2-4 cm. long, 1-2 cm. wide, obtuse, cuneate to abruptly nar- 

 rowed at base, coarsely and obtusely few-toothed, green and 

 often purplish along the nerves above, pale purphsh beneath, 

 the petioles winged, 1-2 cm. long, the upper leaves rather small 

 and short-petiolate; verticils rather loose, few-flowered; upper 

 lip of corolla erect, 2.5-3 mm. long, deeply 2-lobed, die lower 

 lip 1/3-1/2 as long as the tube, the lateral lobes broadly lanceo- 

 late, slightly narrower than the median; nutlets 1.2-1.5 mm. 



long. Apr.-May. Hokkaido, Honshu, Shikoku; rather 



common. 



Var. tsukubana Nakai. Tsukuba-kimmon-so. Upper lip 

 semirounded, subentire, much shorter than the lower lip, about 

 1 mm. long. Honshu, Kyushu. 



7. Ajuga makinoi Nakai. Tachi-kiran-so. Perennial 

 herb, long-pubescent on stems and leaves; stems several to- 

 gether, 5-20 cm. long, ascending, decumbent in fruit, with 

 several pairs of scalelike oblanceolate leaves 1-2 cm. long at 

 base; cauline leaves oblong or oblong-spathulate, acute and 

 long-decurrent on the petiole at base, 3-5 cm. long, 1-1.5 cm. 

 wide in anthesis, 8-10 cm. long, 2-3.5 cm. wide in summer 

 leaves, with few obtuse lobes on margin; flowers several in 

 leaf-axils, subsessile; closely related to A. yesoensis but larger; 

 flowers blue-purple, the upper lip erect, 2-3 mm. long, deeply 



2-lobed. Apr.-June. Honshu (Tokaido, W. Musashi Prov. 



and s. Shinano Prov.). 



8. Ajuga decumbens Thunb. A. decumbens var. sinu- 

 ata Fr. & Sav.; A. decumbens var. glabrescens Fr. & Sav.; A. 

 devestita Lev. & Van't. Kirane-s6, Jigoku-no-kama-no-futa. 



