554 



Leguminosae 



at base, acute on inner side and truncate on outer side, loosely 

 short-pubescent, whitish beneath; inflorescences of few umbel- 

 late undivided peduncles on the end of branchlets; flowers 



numerous, sessile, in terminal heads; corolla pinkish, about 



8 mm. long; stamens about 25, about 3 cm. long. Kyushu 



(Amakusa Isl.) ; very rare. Tokara Isls. 



3. GLEDITSIA L. 



Saikachi Zoku 



Deciduous trees with polygamous flowers, some of the branchlets reduced to simple or branched spines; leaves pinnate to bi- 

 pinnate, the leaflets sometimes undulately incised; flowers small, greenish, in racemes or spikes without bracteoles; petals and 

 calyx-lobes 3-5; stamens twice as many as the calyx-lobes; legumes elongate, or nearly ovate, flattened, coriaceous or slightly 

 fleshy. ^About 12 species, in the warmer parts of Asia, N. America, and tropical Africa. 



1. Gleditsia japonica Miq. G. horrida (Thunb.) Ma- 

 kino, non Willd.; Fagara horrida Thunb.; Caesalpinoides ja- 



ponicum (Miq.) O. Kuntze Saikachi. Tree with nearly 



glabrous branches and branched spines; leaves 10-25 cm. long, 

 simply or twice pinnate, short-pubescent on the rachis, the 

 leaflets 12-24 on each pinna, oblique, narrowly ovate, 15-35 

 mm. long, 8-15 mm. wide, obtuse, entire or undulate-serrate, 

 upper margin slightly dilated at base, nearly or quite gla- 

 brous, with raised veinlets beneath, green and slighdy lustrous 



above, yellowish green beneath; spikes 6-8 cm. long, densely 

 flowered, from the short leafy shoots; flowers yellowish, 3-4 

 mm. across, nearly sessile; calyx slightly pubescent, the lobes 

 oblong, slightly shorter than the tube; petals yellowish, elliptic, 

 puberulous; stamens short-exserted; legumes 20-25 cm. long, 

 3-3.5 cm. wide, pendulous, slightly arcuate, on a stipe about 



2.5 cm. long. May-June. Honshu (centr. distr. and 



westw.), Shikoku, Kyushu. 



4. CAESALPINIA L. Jaketsu-ibara Zoku 



Trees or shrubs, often prickly, rarely scandent; leaves bipinnate, the leaflets herbaceous to coriaceous; flowers yellow or reddish, 

 in axillary or terminal racemes often aggregated in a panicle, the bracts small, caducous, the bracteoles absent; calyx widely open, 

 5-lobed, the lobes imbricate in bud, the lowest one often larger; petals rounded, spreading, imbricate in bud; legumes ovate to 

 lanceolate, flattened. About 40 species, widely distributed in the warmer parts of the world. 



lA. Deciduous shrub; leaflets 10-20 on each pinna, obovate or oblong, 15-20 mm. long, rounded at apex; flowers in racemes; pedicels 

 3-4 cm. long 1. C. japonica 



IB. Evergreen woody climber; leaflets 4-10 on each pinna, ovate or oblong, 3-5 cm. long, acute to obtuse at apex; flowers in panicles; 

 pedicels 6-8 mm. long 2. C. nuga 



1. Caesalpinia japonica Sieb. & Zucc. C. sepiaria var. 

 japonica (Sieb. & Zucc.) Makino; C. crista sensu Thunb., non 

 L.; C. sepiaria sensu auct. Japon., non Roxb. Jaketsu- 

 ibara. Somewhat scandent shrub, 1-2 m. high; branches 

 much elongate, with prominent retrorse prickles, short-pubes- 

 cent while young; leaves 20-40 cm. long, prickly on rachis and 

 petioles, the pinnae 6-16, the leaflets vivid green on upper 

 side, whitish beneath, sometimes slightly pubescent, the lateral 

 nerves not prominent; racemes terminal, 20-30 cm. long, 

 pedunculate, the bracts narrowly ovate, caducous, 3-4 mm. 

 long, densely brownish pubescent, the pedicels spreading, 

 slender; flowers 25-30 mm. across, expanded, yellow; stamens 

 red, densely villous on the lower half; legumes oblong, slighdy 



arcuate, sessile, flat, glabrous, about 10 cm. long, 3 cm. wide, 



with a thick winglike outer suture. Apr.-June. Woods 



and grassy places in lowlands and hills; Honshu (Kanto Distr. 



and westw.), Shikoku, Kyushu; rather common. Ryukjms 



and China (?). 

 2. Caesalpinia nuga Ait. C. chinensis Roxb.; C. panicu- 



lata Desf. Nanten-kazura. Glabrous prickly climber; 



leaves 20-30 cm. long, the leaflets 4-6 on each pinna, deep 

 green and lustrous on upper side, glaucous beneath, with 

 slightly raised veinlets on both sides; flowers 15-20 mm. 



across; legumes about 5 cm. long. Kyushu (Yakushima). 



India, Malay Peninsula, Formosa, China, and Ryukyus. 



5, CASSIA L. Kawara-ketsumei Zoku 



Herbs, shrubs, or trees; leaves even-pinnate, stipulate, the petiole or rachis with a cuplike sessile or stiped gland; flowers 

 yellow, sometimes white or reddish, in racemes or panicles, often fasciculate in leaf-axils, bracteate and bracteolate; calyx- 

 segments 5, imbricate; petals 5, spreading, imbricate; stamens 10 or fewer, the anthers opening by pores or longitudinally 



dehiscent on the upper part; legumes various, terete to flat, 2-valved, dehiscent. About 450 species, widely distributed in 



tropical and warm-temperate regions. 



1. Cassia nomame (Sieb.) Honda. C. mimosoides var. 

 nomame (Sieb.) Makino; C. mimosoides sensu auct. Japon., 



non L.; Soja nomame Sieb. Kawara-ketsumei. Annual 



herb 30-60 cm. high; stems terete, sometimes branched, whit- 

 ish puberulent; stipules subulate or subulate-lanceolate, long- 

 acuminate, few-ribbed at base, persistent, appressed, 5-7 mm. 

 long; leaves 3-7 cm. long, the petioles short, with a solitary 

 sessile gland just below the insertion of the lowest leaflets, the 



leaflets 30-70, linear-oblong, 8-12 mm. long, 2-3 mm. wide, 

 scattered short-pilose on margin; flowers supra-axillary, 1 or 2 

 together, (t-l mm. across, yellow, the bract similar to the 

 stipules but smaller, the bracteoles on the top of the pedicels, 

 narrowly lanceolate, about 2 mm. long, acuminate; calyx-seg- 

 ments lanceolate or broadly so, 5-6 mm. long, acuminate, 

 short-puberulent and scarious on the margins; petals obovate, 

 slighdy longer than the calyx; fertile stamens 4 with a reduced 



