838 



Caprifoluceae 



6. WEIGELA Thunb. Tani-utsugi Zoku 



Deciduous shrubs; leaves opposite, petiolate, toothed; flowers in axillary and terminal often trichotomously divided corymbs; 

 calyx-tube narrow, the lobes 5, deciduous or persistent; corolla campanulate-infundibuliform, nearly actinomorphic, white or 

 reddish, sometimes yellowish, the tube ampliate, the limb nearly equally 5-lobed, the lobes imbricate in bud; stamens 5; style 

 slender; ovary 2-locular, many-ovuled; capsules coriaceous or slightly woody, narrow, 2-valved, septicidally dehiscent, the axis 

 and base of style persistent; seeds many. Ten or more species in e. Asia. 



lA. Flowers white or reddish; calyx-limb regular, 5-lobed or -divided. 

 2A. Calyx-limb divided to the middle; seeds wingless. 



3 A. Leaves glabrous on upper side I. W. florida 



3B. Leaves pilose on both surfaces 2. W. praecox 



2B. Calyx-limb divided to the base; seeds narrowly winged. 

 4A. Corolla glabrous outside. 



5A. Leaves glabrous beneath or with short coarse hairs on nerves. 



6A. Leaves 8-15 cm. long, 4-10 cm. wide, glabrous or nearly so; corolla-tube abruptly ampliate on upper half. 



3. W. coraeensis 

 6B. Leaves 6-10 cm. long, 3-6 cm. wide, short-pilose on nerves beneath; corolla-tube gradually ampliate on upper half. 



4. W, decora 



5B. Leaves densely whitish short-pubescent beneath 5. W. hortensts 



4B. Corolla pilose outside. 



7A. Ovary, young branches, and underside of leaves ascending-pilose; flowers usually white at anthesis, becoming reddish with age; 



petioles 5-8 mm. long 6. W. japonica 



7B. Ovary, young branchlets, and underside of leaves spreading-pilose; flowers usually reddish at anthesis; petioles 1-5 mm. long. 



8A. Plant sparsely pubescent; petioles 1-3 mm. long 7. W. sanguinea 



8B. Plant densely pubescent; petioles 3-5 mm. long 8. W. floribunda 



IB. Flowers pale yellow; calyx-limb bilabiate. 



9A. Flowers pedunculate; calyx-limb persistent in fruit 9. W. middendorffiana 



9B. Flowers sessile; calyx-limb deciduous in fruit 10. W. maximowiczii 



1. Weigela florida (Bunge) A. DC. Calysphyrum long. May-(june). Near seashores; Hokkaido, Honshu, 



floridum Bunge; Diervilla florida (Bunge) Sieb. & Zucc; W. Shikoku, Kyushu. 



pauciflora DC; W. rosea Lindl. O-eeni-utsugi. Shrub Var. fragrans (Ohwi) Hara. W. fragrans Ohwi ^Nioi- 



with the young branches glabrous or with 2 longitudinal lines utsugi. Flowers fragrant; corolla short, about 2 cm. long. 



of short hairs; leaves ovate-oblong or obovate, 4-10 cm. long, Honshu (Izu Isls.). 



2-4 cm. wide, acuminate, toothed, glabrous above, densely 4. Weigela decora (Nakai) Nakai. Diervilla decora 



pubescent on nerves beneadi, the petioles 1-3 mm. long; flow- Nakai; W. japonica var. decora (Nakai) Okuyama; W. versi- 



ers solitary in leaf-axils; calyx-tube glabrous or with scattered color Sieb. & Zucc, pro parte; D. floribunda var. versicolor 



coarse hairs, the lobes 8-12 mm. long, lanceolate, acuminate, Rehd.; D. niI{oensis Nakai; W. ha\onensis Nakai Nishiki- 



pilose; corolla 3^ cm. long, soft-puberulent externally, red- utsugi. Shrub with gray-brown branches, the young branch- 

 dish; style as long as the corolla; capsules 15-22 mm. long. lets glabrous or with 2 longitudinal lines of hairs; leaves ob- 



Kyushu. Korea, n. China, and Manchuria. ovate-elliptic, 6-10 cm. long, 3-6 cm. wide, abruptly acuminate, 



2. Weigela praecox (Lemoine) L. H. Bailey. Diervilla acute at base, slighdy lustrous and nearly glabrous above, short- 



praecox Lemoine Birodo-utsugi. Shrub with 2 longi- pilose on nerves beneath, the petioles about 1 cm. long, nearly 



tudinal lines of hairs on young branches; leaves ovate or ovate- glabrous; flowers 2 or 3 in leaf axils, often short-pedunculate; 



oblong, 4-7 cm. long, 2-3 cm. wide, prominendy pubescent ovary glabrous or scattered hairy; calyx-segments broadly lin- 



on both sides especially on nerves beneath, sessile or the peti- ear, slighdy pilose; corolla white, reddish with age, the tube 



oles to 2 mm. long; flowers 1 or 2 in leaf-axils, sessile; ovary gradually ampliate on upper half, essentially glabrous; style ex- 



loosely pilose; calyx-segments lanceolate, 7-10 mm. long, un- serted. May-June. Honshu, Shikoku, Kyushu. Forma 



equally connate at base, pilose; corolla 3-4 cm. long, short- unicolor (Nakai) Hara. W. decora var. unicolor Nakai 



pubescent externally, infundibuliform-campanulate, abruptly Benibana-nishiki-utsugi. Flowers reddish from die first, 

 ampliate, reddish; style included; capsules about 15 mm. long. Var. rosea (Makino) Hara. Diervilla jujisanensis var. 



May-June. Kyushu (reported from mountains of Chi- rosea Makino; W. jujisanensis var. rosea (Makino) Nakai 



kuzenProv.). ^Korea and Manchuria. Fuji-beni-utsugi. Leaves longer, acute; calyx-lobes longer, 



3. Weigela coreensis Thunb. Diervilla grandiflora more densely pilose; corolla reddish. Honshu (centr. 



Sieb. & Zucc; W. grandiflora (Sieb. & Zucc.) K. Koch; D. distr.). Forma fujisanensis (Makino) Hara. Diervilla 



japonica var. grandiflora Miq. Hakone-utsugi. Nearly jujisanensis Makino; W. jujisanensis (Makino) Nakai 



glabrous shrub with thick gray-brown branches; leaves thick, Fuji-beni-utsugi. Corolla white, becoming reddish with 



broadly elliptic or obovate-elliptic, 8-15 cm. long, 4-10 cm. age. 



wide, abruptly acuminate, abruptly acute at base, glabrous or 5. Weigela hortensis (Sieb. & Zucc.) K. Koch. Dier- 



nearly so, lustrous above, the petioles 1-1.5 cm. long; flowers villa hortensis Sieb. & Zucc; D. japonica var. hortensis (Sieb. 



2-8 in axillary short-pedunculate cymes; ovary glabrous; calyx- & Zucc.) Maxim. Tani-utsugi. Shrub with gray-brown 



lobes broadly linear, nearly glabrous; corolla 3-4 cm. long, the branches, glabrous or often loosely pilose while young; leaves 



tube abruptly ampliate on upper half, white at first, becoming ovate-elliptic, ovate-oblong, or obovate, sometimes ovate, 6-10 



red with age (rarely not) ; style not exserted; capsules 2-3 cm. cm. long, 2.5-5 cm. wide, acuminate, acute at base, short- 



