Eupteleaceae; Cercidiphyllaceae; Ranunculaceae 439 



1. EUPTELEA Sieb. & Zucc. Fusazakura Zoku 



Characters of the family. 



1. Euptelea polyandra Sieb. & Zucc. Fusazakura. mm. long, the connective long-mucronate; fruit usually 1- 



Branches red-brown; petioles 3-7 cm. long, rather slender, seeded, glabrous, obliquely obovate, 5-7 mm. long, the stipe 



hairy on upper side while young; leaves 6-12 cm. long and as as long as the body; stigma linear, slightly concave in fruit. 



wide, abruptly long-acuminate, subtruncate to rounded at base, Mar.-May. Mountains; Honshu, Shikoku, Kyushu; 



irregularly coarse-toodied, pale green and sometimes slighdy rather common. 

 glaucous beneath, slightly pilose in axils; anthers linear, 6-7 



Fam. 89. CERCIDIPHYLLACEAE Katsura Ka Cercidiphyllum Family 



Deciduous dioecious trees with dimorphic branches (short spurs and longer vegetative shoots); buds 2-scaled; leaves 

 petiolate, simple, palmately nerved, the stipules connate inside the petiole; flowers appearing before the leaves, small- 

 scaled, the perianth absent; stamens many, nearly sessile, the filaments filiform, the anthers linear, red, the connective extended 

 at the apex; pistillate flowers short-pedicelled; carpels 3-5, follicular, free; style very slender, elongate, rose-purple; fruit a many- 

 seeded follicle, dehiscent along the inner suture; seeds small, winged; embryo small. A single genus of 2 or 3 species in e. 



Asia. 



1. CERCIDIPHYLLUM Sieb. & Zucc. Katsura Zoku 

 Characters of the family. Two species in Japan. 



l.\. Seeds winged on one end; bark longitudinally fissured while still young; leaves of short spurs orbicular-cordate, slightly narrowed 

 above and rounded at apex, shallowly cordate to nearly truncate at base; leaves of long shoots usually narrowed above. 



1. C. japoniciim 



IB. Seeds winged on both ends; bark not fissured until very old; leaves larger, those of short spur nearly orbicular, broadly rounded at 

 apex, usually distinctly cordate at base, those of long shoots usually obtuse at apex 2. C. magnificum 



1. Cercidiphyllum japonicum Sieb. & Zucc. C. ovale (Miyoshi) Ohwi. C. japonicum var. pendulum Miyoshi 



Maxim. Katsura. Trunk often branched above the base; Shidare-katsura. Rare form with pendulous branches. 



leaves vivid green on upper side, glaucous beneath, obtusely Honshu; sometimes cultivated. 



serrulate, 3-7 cm. long and as wide, the petioles reddish, 2-2.5 2. Cercidiphyllum magnificum (Nakai) Nakai. C. ja- 



cm. long; staminate flowers very short-pedicelled, with few ponicum var. magnificum Nakai Hiro-ha-katsura. 



small bracts; stamens many, the anthers linear, red, 3-4 mm. Closely resembles the preceding, but the bark not fissured until 



long; pistillate flowers short-petioled; style very long; follicles the tree becomes very old; leaves larger, orbicular, 7-10 cm. 



nearly sessile, cylindric, slightiy curved, about 15 mm. long; long and as wide, deeply cordate; seeds 6-7 mm. long, in- 



style very slender; seeds flat, small, winged on one end, 5-6.5 elusive of the wings. Mountains at higher elevations than 



mm. long, inclusive of the wing. Apr.-May. Hokkaido, the preceding; Honshu (centr. and n. distr.). 



Honshu, Shikoku, Kyushu. China. Forma pendulum 



Fam. 90. RANUNCULACEAE Kim-p5ge Ka Buttercup Family 



Annuals or perennials, rarely shrubs, sometimes scandent; leaves often divided, alternate, sometimes opposite; flowers ac- 

 tinomorphic or zygomorphic, bisexual or sometimes unisexual, often large; sepals free, often petaloid, 3 to many, usually im- 

 bricate in bud; petals free, 3 to many, sometimes absent, well developed or sometimes reduced to nectaries; stamens many, free; 

 anthers introrse, longitudinally split; carpels many or sometimes few, l-locular, usually apocarpous, or sometimes united to form 

 a compound ovary; styles distinct, the stigma terminal or oblique; ovules anatropous, ascending or pendulous; fruit usually a 



follicle or an achene, rarely berrylike and indehiscent, 1- to many-seeded; embryo small. About 40 genera, with about 1,500 



species, abundant in the temperate and frigid regions of both hemispheres, few in the Tropics. 



I A. Sepals valvate in bud; leaves opposite, styles much elongate, taillike in fruit, often plumose-hairy 1. Clematis 



IB. Sepals imbricate in bud; leaves usually alternate or radical, rarely opposite. 

 2A. Fruit an achene. 



3A. Flowers with involucral leaves. 



4A. Styles elongate and taillike in fruit 2. Pulsatilla 



4B. Styles not accrescent after anthesis, short 3. Anemone 



3B. Flowers not involucratc. 

 5A. Petals present. 



6A. Petals with a nectary gland at the base. 



7A. Ovules ascending, funides ventral; terrestrial or aquatic herbs not glaucous in our species 4. Ranuncitltis 



7B. Ovules pendulous, funicles dorsal; terrestrial glaucous herbs 5. Callianthemtim 



6B. Petals without glands 6. Adonis 



5B. Petals absent. 



8A. Leaves ternately compound 7. Thalictrum 



8B. Leaves simple, palmately cleft to lobed 8. Trautvetteria 



2B. Fruit a follicle, rarely a berry. 



