Hamamelidaceae; Rosaceae 



517 



Var. bitchuensis (Makino) Ohwi. H. bitchucnsis Makino 



Atetsu-mansaku. Leaves persistent stellate-pubescent. 



Honshu (Chugoku Distr.). 



Var. obtusata Matsum. H. obtttsata (Matsum.) Makino 



Maruba-mansaku. Leaves subrounded on the upper 



half, rounded to subretusc at tip, the stellate hairs deciduous; 



petals yellow. Mountains; Honshu (Japan Sea side). 



Forma incamata (Makino) Ohwi. H. incarnata Makino 



Akabana-mansaku. Petals reddish. Forma flavo- 



purpurascens (Makino) Rehd. H. obtusata forma flavopur- 



piirascens Makino Nishiki-mansaku. Petals yellow on 



upper part, reddish at base. 



Hamamelis megalopbylla Koidz. with larger leaves is 

 doubtfully distinct. Honshu (Kanto Distr.). 



Hamamelis virginiana L., an American species, is occa- 

 sionally cultivated; flowering in autumn. 



4. CORYLOPSIS Sieb. & Zucc Tosa-mizuki Zoku 



Deciduous stellate-pubescent shrubs; leaves petiolate, simple, penninerved, toothed, broadly ovate, usually slighdy oblique; 

 stipules membranous, deciduous, rather large; flowers in axillary pendulous spikes, bisexual, yellow, sessile, precocious, bracteate, 

 the bracts membranous, concave, the lower ones larger; calyx-lobes short, persistent, the tube adnate to the ovary; petals 5, 

 clawed, obovate to spathulate; stamens 5, alternate with the staminodia; ovary subinferior, 2-locular; styles filiform, the stigma 

 capitellate; ovules solitary in each locule; capsules subglobose or broadly obovoid, 2-valved, the valves bifid; seeds solitary in each 

 locule, black, shining. More than 10 species, in e. Asia and the Himalayas. 



lA. Spikes 1- to 3-flowered; leaves 3-5 cm. long, 1.5-3 cm. wide L C. panciflora 



IB. Spikes 5- to lO-flowered; leaves larger, 3-10 cm. long, 2-8 cm. wide. 



2A. Young branches, petioles, and Lnflorescence with yellowish hairs 2. C. spicata 



2B. Young branches and other parts glabrous or nearly glabrous. 



3A. Leaves ovate-orbicular, short-dentate with prominently awn-pointed teeth; stamens about half as long as the petals. 



3. C. glabrcscens 

 33. Leaves obovate, sometimes obovate-orbicular, with very short-awned teeth; stamens nearly as long as the petals 4. C. gotoana 



1. Corylopsis pauciflora Sieb. & Zucc. Hyuga-mizuki, 

 Iyo-mizuki. Much-branched shrub, 1-2 m. high, with slen- 

 der glabrous branches; leaves membranous, oblique, ovate, 3-5 

 cm. long, 1.5-3 cm. wide, acute, slightly cordate, glabrous on 

 upper side, glaucescent and short stellate-hairy while young 

 beneath, appressed-pilose on the under side of the nerves, un- 

 dulate, short avvned-toothed, the lateral nerves 5 to 7 pairs, 

 the petioles 5-15 mm. long; flowers 1-3, pale yellow, about 15 



mm. long; stamens slightly shorter than the petals. Mar.- 



Apr. Mountains; Honshu (n. Kinki Distr. and Kaga, Echi- 

 zen, and Mino Prov.); widely planted. Formosa. 



2. Corylopsis spicata Sieb. & Zucc. C. kesakji Sieb. & 



Zucc. TosA-MizuKi. Shrub about 2 m. high, with rather 



stout branches, usually pilose when young; leaves ovate-orbicu- 

 lar to obovate-orbicular, abruptly acute, glabrous on upper side, 

 glaucous and pilose beneath, short awn-toothed, the lateral 

 nerves 6 or 7 pairs, the petioles 1-2.5 cm. long; spikes 7- to 10- 

 flowered; flowers yellow, about 10 mm. long; stamens about 



as long as the petals, the anthers dark purple. Mar.-Apr. 



Mountains; Shikoku; rare; widely planted. 



3. Corylopsis glabrescens Fr. & Sav. C. \esa\ii sensu 



auct. Japon., non Sieb. & Zucc. Kirishima-mizuki. Large 



shrub; leaves glabrous on upper side, glaucous and sparingly 

 stellate-pubescent beneath while young, abruptly acute, slighdy 

 cordate, the nerves appressed-pilose while young; spikes sev- 

 eral-flowered; flowers yellow, about 15 mm. long; stamens 

 half as long as the petals, the anthers purple. Apr. Moun- 

 tains; Kyushu (Kirishima Mts.). 



4. Corylopsis gotoana Makino. Koya-mizuki, Miyama- 

 TosA-MizuKi. Large shrub or small tree to 5 m. high; leaves 

 with scattered, long, appressed hairs while young, glaucous and 

 appressed-pilose on the nerves and stellate-pubescent beneath 

 while young, usually becoming glabrate; flowers about 10 

 mm. long; petals obovate; stamens nearly as long as the petals, 



the anthers purplish. Apr. Mountains; Honshu (centr. 



distr. and westw.), Shikoku, Kyushu; rather rare. 



5. DISTYLIUM Sieb. & Zucc. Isu-no-ki Zoku 



Evergreen stellate-pubescent trees; leaves coriaceous, short-petiolate, entire or few-toothed, penninerved; stipules membranous, 

 deciduous; flowers polygamous (plants sometimes dioecious), apetalous, bracteate, in axillary spikes; calyx free from the ovary, 

 3- to 5-parted, the lobes imbricate in bud; stamens 2-8, the filaments short; ovary superior, usually densely stellate-pubescent; 



styles 2; capsules nearly woody, oblong to subglobose, cuspidate, 2-valved, the valves bifid; seeds oblong-cylindric, shining. 



Few species, in Japan, China, and the Himalayas. 



1. Distylium racemosum Sieb. & Zucc. Isu-no-ki. shorter than the leaves, stellate-pubescent; anthers red; cap- 



Branchlets glabrate, yellowish stellate-hairy while young; sules broadly ovoid, shallowly bifid, about 10 mm. long, 



leaves oblong to narrowly obovate, 3-7 cm. long, 1.5-3 cm. yellow-brown tomentose. Mar.-May. Honshu (s. Kanto 



wide, acute to obtuse, sometimes undulate-toothed on the Distr. and westw.), Shikoku, Kyushu; occasionally planted, 



upper margin, stellate-pubescent while young; spikes axillary, Ryukyus. A phase with variegated leaves is known. 



Fam. 1(M. ROSACEAE Bara Ka Rose Family 



Herbs, shrubs or trees of various habit; leaves alternate, rarely opposite, simple or compound, usually stipulate; flowers actino- 

 morphic; caljoc superior or inferior, the lobes usually 5, imbricate in bud; petals usually as many as the calyx-lobes, rarely absent, 

 perigynous, often orbicular with or without a short claw at base, imbricate in bud; stamens many, rarely definite, perigynous or 



