510 Saxifragaceae 



1. Deinanthe bifida Maxim. Gimbai-so. Stems 40- calyx-lobes of bisexual flowers elliptic, 6-8 mm. long, obtuse, 



70 cm. long, simple; lower leaves small, scarious, scalelike, green; petals obovate-orbicular, about 10 mm. long; capsules 



the normal leaves 10-20 cm. long, 6-12 cm. wide, toothed and 8-10 mm. across, the style conical. July-Aug. Woods in 



sometimes obscurely incised, shallowly 2-fid, the petiole 1-10 mountains in warmer regions; Honshu (s. Kanto Distr. and 



cm. long; inflorescence glabrescent, few- to more than 20- southwestw.), Shikoku, Kyushu, 

 flowered; sterile flowers with 2 or 3 enlarged calyx-lobes; 



13. PLATYCRATER Sieb. & Zucc Baika-ama-cha Zoku 



Deciduous shrubs; leaves opposite, petiolate, toothed, exstipulate; inflorescence loose, cymose, the marginal neutral flowers with 

 enlarged 3- to 5-lobed calyx; bisexual flowers rather large, 4-merous; calyx-tube narrowly obconical, the calyx lobes lanceolate, 

 persistent, acute; petals ovate, white; stamens very many; styles 2, free; ovary inferior, 2-locular; capsules narrowly obconical; 

 seeds small, many, with a taillike wing at each end. Two species, in Japan and China. 



1. Platycrater arguta Sieb. & Zucc. P. serrata Makino, slender; calyx in neutral flowers shallowly 3- to 5-lobed, the 



excl. basionym Baika-ama-cha. Sparsely and coarsely calyx-lobes in bisexual flowers 4-7 mm. long; petals about 10 



hairy; leaves rather thinly membranous, oblong to broadly mm. long; capsules 5-8 mm. long; styles persistent, 7-8 mm. 



lanceolate, 10-15 cm. long, 3-5(-7) cm. wide, short-toothed, long.— —July-Aug. Honshu (Totomi, Yamato, and Kii 



acuminate, paler beneath, the petioles 5-30 mm. long, winged Prov.), Shikoku, Kyushu, 

 above; inflorescence terminal, several-flowered, the pedicels 



14. CARDIANDRA Sieb. & Zucc. Kusa-ajisai Zoku 



Sparsely hirsute, suffrutescent herb; leaves alternate, rarely nearly opposite, broadly lanceolate to oblong, acutely toothed, 

 exstipulate; inflorescence a terminal corymb with few neutral peripheral flowers; neutral flowers with 3, often colored, petaloid 

 calyx-lobes; bisexual flowers small, many, white or rose-colored; calyx-tube ellipsoidal, the teeth 4-5, deltoid; petals 5, small, 

 imbricate in bud; stamens many; ovary nearly inferior, imperfectly 3-locular; styles 3; capsules ovoid; seeds many, small, with a 

 small narrow wing at each end. Few species, in e. Asia. 



1. Cardiandra alternifolia Sieb. & Zucc. Kusa-ajisai. long; capsules broadly ovoid, about 4 mm. long inclusive of 



Stems 20-70 cm. long, usually simple; leaves membranous, the styles; styles 3; seeds small, elliptic, with a very short wing 



acuminate at both ends, 10-20 cm. long, 2.5-6 cm. wide; at each end. July-Sept. Woods in mountains; Honshu 



calyx-teeth deltoid, obtuse; petals broadly obovate, about 3 mm. (Kanto Distr. and westw.), Shikoku, Kyushu. 



15. HYDRANGEA L. Ajisai Zoku 



Erect or scandent deciduous shrubs; leaves opposite, simple, petiolate, usually toothed, exstipulate; inflorescence a terminal 

 cyme or panicle; flowers small, bisexual, some of the marginal ones neutral with enlarged petallike sepals; calyx-lobes in bisexual 

 flowers 4-5, small, toothlike; petals 4-5, usually valvate in bud; stamens 8-20; ovary inferior or subsuperior; styles 2-5, small; 



capsules 2- to 5-locular; seeds small, many, often winged. Species 20-25, in temperate and warmer regions of e. Asia, India, 



and N. America. 



lA. Scandent shrub; petals connate above, calyptrately deciduous at anthesis; seeds flat, winged on margin; stamens 15—20. . . \.H. petiolaris 

 IB. Erect shrubs; petals usually not connate, spreading in anthesis; seeds winged or wingless. 



2A. Inflorescence a pyramidal panicle; seeds with a taillike wing at each end 2. H. paniculata 



2B. Inflorescence a flat-topped cyme. 



3A. Seeds with a taillike wing at each end; ovary inferior; styles usually 2. 



4A. Leaves toothed, with few incisions; inflorescence not enveloped by large bracts in bud 3. H. sikphi"'"' 



4B. Leaves minutely toothed, not incised; inflorescence enveloped by few large bracts in bud 4. H. involucrata 



3B. Seeds entire or scarcely winged; ovary subsuperior; styles 2—3. 



5A. Petals ovate-oblong, not narrowed at base 5. H. macrophylla 



5B. Petals obovate or broadly spathulate, narrowed at base. 



6A. Inflorescence destitute of neutral flowers; more or less pilose shrub, with compact many-flowered inflorescence. 6. H. hirta 

 63. Inflorescence at least partially bearing neutral flowers; glabrescent shrubs with rather loose inflorescence. 

 7A. Leaves acuminate, 6-12 cm. long, rather many-toothed; petals obtuse. 



8A. Leaves coarsely dentate; anthers ellipsoidal; branches purple-brown 1 . H. atigustipetala 



8B. Leaves short-toothed; anthers subglobose; branches gray-brown 8. H. scandens 



7B. Leaves acute to short-acuminate, 3-5 (-6) cm. long, with few coarse teeth; petals mucronate or subacute. 



9. H. luteovenosa 



1. Hydrangea petiolaris Sieb. & Zucc. H. scandens broadly ovate, 4-10 cm. long, 3-10 cm. wide, acutely toothed, 

 sensu Maxim., non Ser. (1830) mec Poeppig. (1830) ; H. cordi- nearly glabrous, abruptly acute, paler and with tufts of axillary 

 jolia Sieb. & Zucc; H. anomala D. Don subsp. petiolaris (Sieb. hairs beneath, the petioles 3-8 cm. long; inflorescence rather 

 & Zucc.) McClintock. Goto-zuru, Tsuru-ajisai. Scandent large, cymose; enlarged calyx-lobes of neutral flowers some- 

 shrub, the branches with aerial roots; leaves ovate-cordate or times toothed; petals narrowly ovate, not narrowed at base; 



