Verbenaceae 



765 



1. Premna japonica Miq. P. microphyUa sensu auct. 

 Japon., non Turcz.; (?) P. glabra A. Gray ex Maxim.; P. liix- 



urians Nakai; P. japonica var. luxurians (Nakai) Sugimoto 



Hama-kusaci. Deciduous much-branciicd small tree or large 

 shrub, furfuraceous while very young: branches gray-brown, 

 terete, the nodes with thickened pulvinilike scars; leaves mem- 

 branous, ovate to broadly so, or elliptic, 5-12 cm. long, 2.5-7 

 cm. wide, acuminate, obtuse at the tip, coarsely few-toothed on 



upper half or entire, the petioles 1-3 cm. long; panicles pe- 

 dunculate, 6-10 cm. long, loosely branched, few-flowered, the 

 bracts linear, truncate; flowers pale greenish yellow, 8-10 mm. 

 long, tubular-cnmpanulate; calyx irregularly toothed; corolla 

 glandular outside, the lobes short; fruit obovoid-globose, dark 



purple, 3-3.5 mm. across. May-June. Near seashores; 



Honshu (s. Kinki, Chugoku Distr.), Shikoku, Kyushu. 



Ryukyus and Formosa. 



5. VITEX L. Hamago Zoku 



Glabrous or hairy shrubs or trees; leaves opposite, simple or usually palmately compound, entire or toothed; cymes axillary or 

 terminal; flowers zygomorphic, white, purplish, or yellowish, the bracts small; calyx (3-)5-toothed; corolla-limb subbilabiate, 

 5-lobed, the 2 inner lobes often the smallest, the outermost ones largest, sometimes retuse; stamens 4, usually exserted, didymous; 

 ovary imperfectly 2-locular, later becoming 4-locular, with 2 ovules in each locule; drupe globose, dry or slightly juicy, sur- 

 rounded usually by the accrescent calyx, the stone bony, 4-locular. About 100 species, chiefly in the Tropics, few in temperate 



regions of Europe and e. Asia. 



1. Vitex rohindifolia L. f. V. ovata Thunb.; V. trifolia 

 var. simplicijolia Cham.; V. trijolia var. unijoliata Schauer; V. 

 trifolia var. ovata (Thunb.) Makino Hamago. Procum- 

 bent or ascending shrub densely gray-white puberulent; 

 branches 4-angled; leaves herbaceous, broadly ovate to broadly 

 elliptic, 2-5 cm. long, 1.5-3 cm. wide, obtuse to rounded, ab- 

 rupdy acute at base, entire, green and thinly puberulent above. 



densely grayish puberulent beneath; panicles terminal, densely 

 flowered, 4-7 cm. long, with very short branches; corolla pur- 

 plish, about 13 mm. long; style about 15 mm. long; fruit glo- 

 bose, 5-7 mm. across, enclosed on lower half by the persistent 

 calyx. July-Sept. Sandy places by the sea; Honshu, Shi- 

 koku, Kyushu. Korea, Bonins, Ryukyus, Formosa to se. 



Asia, Pacific Islands, and Australia. 



6. CLERODENDRUM L. Kusagi Zoku 



Shrubs or trees; leaves opposite, rarely ternate, entire, sometimes obsoletely toothed or shallowly lobed, cymes in upper axils, 

 somerimes forming a terminal corymb or panicle; flowers zygomorphic, rather large, white, blue, or red; calyx campanu- 

 late, infundibuliform or tubular, 5-lobed, often accrescent after anthesis, green or variously colored; corolla-tube much-elongate, 

 the limb 5-lobed, spreading or reflexed, the lobes nearly equal; stamens 4, long-exserted, involute in bud; ovary incompletely 



4-locular, the ovules 1 in each locule; style elongate, bifid; drupe surrounded at base by the persistent calyx; stones 4. About 



100 species, in the Tropics and subtropics. 



)A. Leaves narrowly deltoid to deltoid-ovate, 8-15 cm. long, 3-nerved from the base; corymbs rather many-flowered, much-branched, 

 terminal; calyx acutely angled, deeply 5-Iobed, about 15 mm. long, about half as long as die corolla-tube 1. C. trichotomum 



IB. Leaves elliptic, ovate to broadly so, 3-7 cm. long, obscurely pennincrved; corymbs usually 3-flowercd, axillary; calyx not angled, 

 with 5 depressed teeth, 3-4 mm. long, shorter than the corolla-tube 2. C. neriijolium 



1. Clerodendnim trichotomum Thunb. Siphonanthus 



trichotomus (Thunb.) Nakai; C. serotinum Carr. Kusagi. 



Large shrub or small tree with rather thick terete branches; 

 leaves membranous, deltoid-ovate, narrowly deltoid, or broadly 

 ovate, 8-15 cm. long, 5-10 cm. wide, gradually acuminate, 

 somewhat rounded at base, obsoletely toothed or subentire, 3- 

 nerved from the base, sometimes thinly pubescent above, pu- 

 bescent beneath especially on nerves, obsoletely glandular- 

 dotted, long-petiolate; cymes in large terminal corymbs; 

 calyx deeply 5-lobed, about 15 mm. long, reddish, the lobes 

 ovate, acuminate, spreading in fruit; corolla-tube 2-2.5 cm. 

 long, the limb 2.5-3 cm. across, white; fruit globose, dark 

 blue, lustrous, 6-7 mm. across, subtended by the persistent 



spreading calyx. Aug.-Sept. Hokkaido, Honshu, Shikoku, 



Kyushu; common. Korea, Manchuria, China, Ryukyus, 



Formosa, and Philippines. Forma ferrugineum (Nakai) 



Ohwi. C. trichotomum var. jerrugiiictim Nakai Birodo- 



Kus.vGi. Plant densely pubescent. Occurs with the typi- 

 cal phase. 



Var. esculentum Makino. Shoro-kusagi. Leaves cordate, 

 long-acuminate; inflorescence shorter; calyx-lobes narrower. 

 -Occurs with the typical phase. 



Var. yakusimense (Nakai) Ohwi. Siphonanthus ya\usi- 



wjifn/iV Nakai ; C. yakusimense (Nakai) Nakai Ama-kusagi. 



Plant less pubescent and with fewer flowers and thicker lus- 

 trous leaves. Occurs with the typical phase. 



2. Clerodendrum neriifolium Wall, ex Schaur. Voll^a- 

 meria neriifolia Roxb.; C. inerme sensu auct. Japon., non 



Gaertn. Ibota-kusagi, Gashangi. Slighdy scandent shrub; 



branches grayish brown, gray-white puberulent while young; 

 leaves chartaceous, elliptic, ovate to broadly so, 3-7 cm. long, 

 1.5-3.5 cm. wide, acute at both ends, sometimes obtuse at apex, 

 entire, lustrous, puberulent while very young, the petioles 5-10 

 mm. long; cymes long-pedunculate, axillary, 3-flowered; calyx 

 3-4 mm. long at anthesis, becoming obconical, 8-10 mm. long 

 in fruit; corolla-tube 2-2.5 cm. long, the limb about 15 mm. 

 across, pinkish; fruit obovoid, 6-8 mm. across, covered on 



lower half by the persistent calyx. Wet banks along rivers; 



Kyushu (Tanegashima) ; rare. Ryukyus, Formosa, China, 



Burma, Malaysia to Australia. 



Clerodendrum japonicum (Thunb.) Sweet. Voll^amcria 



japonica Thunb.; C. squamatum Vahl. Higiri. Malayan 



shrub often cultivated in the warmer parts of our area as an 

 ornamental. 



