Leguminosae 



555 



minute 5th stamen usually also present, the anthers truncate, 

 smooth, glabrous, about 2.5 mm. long, the filaments less than 

 1 mm. long; style short; legumes flat, broadly linear, 3-4 cm. 



long, 5-6 mm. wide, short-pilose, sessile, dehiscent, 2-valvcd. 



Sandy riversides and waste grounds; Honshu, Shikoku, 



Kyushu; very common. Korea, Manchuria, and China. 



6. BAUHINIA L. Hakama-kazura Zoku 



Trees, shrubs, or vines with tendrils; leaves simple, entire or 2-lobed, sometimes composed of 2-leaflets, the stipules usually 

 small and deciduous; flowers white or reddish, in simple or paniculately compound racemes, the bracts and bracteoles small; 

 calyx closed in bud or 5-toothed; petals 5; stamens 10 or partly reduced; legumes flattened, elliptic to broadly linear, mem- 

 branous to ligneous, dehiscent or indehiscent. About 200 species, widely distributed in the Tropics. 



1. Bauliinia japonica Maxim. Lasiobema japoniaim 



(Maxim.) de Wit. Hakama-kazura. Woody vine; 



branches sulcate, with red-brown short appressed hairs while 

 young; stipules ovate, obtuse, deciduous; petioles rather elon- 

 gate; leaves somewhat coriaceous, usually rounded-cordate, 

 bifid, 6-10 cm. long, densely reddish brown pubescent when 

 young; tendrils flat, simple, or usually paired; racemes termi- 

 nal, 8-15 cm. long, many-flowered, densely reddish brown 

 pubescent, the bracts subulate, about 2 mm. long, the pedicels 



ascending, 15-20 mm. long, obsoletely bracteolate near the 

 middle; calyx 5-lobed, about 6 mm. long; petals rather thick, 

 6-7 mm. long, pale green inside, densely reddish brown pubes- 

 cent outside, with a claw about as long as the nearly orbicular 

 limb; fertile stamens 3, exserted; ovary villous; legumes 

 coriaceous, oblong or ovate, 5-8 cm. long, 25-30 mm. wide, 



1- to 3-seeded, dehiscent, nearly sessile. July. Woods near 



seashores; Honshu (Kii Prov.), Shikoku, Kyushu; rare. 



Ryukjois. 



7. SOPHORA L. Kurara Zoku 



Perennial herbs or trees; leaves odd-pinnate, the stipules subulate or absent; flowers pale yellow, white, or purplish, in terminal 

 racemes or panicles, the bracts small or absent, the bracteoles none; calyx campanulate to cup-shaped, the teeth short; legumes 



moniliform, not flattened, sometimes 4-angled, fleshy to ligneous, usually indehiscent. About 20 species, in warmer parts of 



the world. 



I A. Perennial herb with racemose inflorescence 1.5. flavescens 



1 B. Trees or shrubs. 



2A. Shrub with racemose inflorescence 2.5. jranchctiana 



2B. Tree with paniculate inflorescence 3. 5. japonica 



1. Sophora flavescens Ait. 5. an^«rf//o/;a Sieb. & Zucc; 2. Sophora franchetiana Dunn. Tsukushi-mure-su- 



5. flavescens var. angitstifolia (Sieb. & Zucc.) Kitag.; S. galeg- zume, Chikushi-mure-suzume. Much-branched shrub, 



aides Pall.; S. \ronei Hance; S. sororia Hance KurjVra. densely brown appressed-pubescent; leaves usually with 11 



Perennial herb, usually glabrous or sometimes with sparse, leaflets, the leaflets elliptic, 2.5-3 cm. long, acute, chartaceous, 



yellowish, short, appressed pubescence; stems erect, 80-150 cm. nearly glabrous on upper side; racemes about 5 cm. long; 



long, terete, slightly ligneous near the base, branching above; flowers white; ovary pubescent; legumes 2.5-3 cm. long, gla- 



stipules linear or filiform, 5-8 mm. long; leaves petioled, 15-25 brous. Kyushu; very rare. China. 



cm. long, the leaflets 15^0, narrowly oblong to broadly Ian- 3. Sophora japonica L. Styphnolobium japonicum (L.) 



ceolate, 2-4 cm. long, 7-15 mm. wide, obtuse to rather acute, Schott En'ju. Deciduous tree; leaves 15-25 cm. long, 



slightly appressed-pubescent on both sides or on the paler un- the leaflets 9-15, ovate to narrowly so, 2.5 cm. long, 15-25 



derside only; racemes erect, terminal, 10-20 cm. long, many- mm. wide, acute to subobtuse, sometimes with a minute sripel 



flowered; flowers pale greenish yellow, rarely purplish, 15-18 at base, deep green, glaucescent and appressed-pubescent be- 



mm. long; calyx loosely appressed-pubescent, oblique, 7-8 mm. neath; panicles 15-30 cm. long, broadly pyramidal, with short 



long, the teeth depressed; legumes coriaceous, linear, 7-8 cm. appressed pubescence; flowers 12-15 mm. long, white to yel- 



long, 7-8 mm. across, obtusely 4-angled, constricted between lowish; caljTC 3-4 mm. long, pubescent, the teeth depressed 



the seeds, short-stiped, appressed-pilose while young. June- 4-angled, short-villous on the margins; legumes stiped, loosely 



July. Grassy places in lowlands and waste grounds; Honshu, appressed-pubescent, glabrate, 5-8 cm. long, rather fleshy. 



Shikoku, Kyushu; common and somewhat variable, our plants July-Aug. A Chinese tree planted in our area, 

 generally with smaller leaflets than in the continental Asian 



phase. Siberia, China, and Korea. 



8. MAACKIA Rupr. & Maxim. Inu-enju Zoku 



Deciduous trees or shrubs with exposed, scaled buds; leaves odd-pinnate, petioled, exstipellate, the leaflets entire; flowers 

 pedicelled, white, in terminal panicles or compound racemes, the bracts narrowly lanceolate, small, caducous, the bracteoles 

 obsolete; calyx rather inflated, with depressed teeth; standard reflexed; legumes flattened, elliptic to broadly linear, 2-valved, 

 dehiscent, rather thin, winged at least on the outer suture, 1- to 5-seeded. Few species in the temperate regions of e. Asia. 



\\. Legumes oblong to narrowly ovate, 2-4 cm. long; leaflets 11-15, 2-4 cm. long; flowers about 7 mm. long; standard nearly entire at 



apex 1 • A/, tashiroi 



IB Legumes broadly linear, 4-9 cm. long; leaflets 7-13, 3-7 cm. long; flowers 7-12 mm. long; standard prominently retuse at apex. 



2. M. amurensis 



