584 



RUTACEAE 



1. Phellodendron amurense Rupr. Kihada. Tree 

 with rather thick branches; leaves 20-40 cm. long, petiolate, 

 the leaflets 5-13, membranous, narrowly ovate or ovate-oblong, 

 5-10 cm. long, 3-5 cm. wide, caudate-acuminate, rounded at 

 base, usually ciliate while young or slightly pubescent be- 

 neath near base, deep green, glaucous beneath; cymes rather 

 large, 5-7 cm. across, puberulous; flowers on short pedicels; 

 sepals ovate-triangular, about 1 mm. long; petals narrowly 

 oblong, pubescent inside, about 4 mm. long; fruit nearly glo- 

 bose, about 1 cm. across. July. Woods in mountains; 



Hokkaido, Honshu, Shikoku, Kyushu. Korea, n. China, 



Manchuria, Ussuri, and Amur. Variable. 



Var. sachalinense F. Schmidt. P. sachalinense (F. 



Schmidt) Sarg. Hiro-ha-no-kihada. Bark thin; leaflets 



slightly broader, nearly destitute of marginal hairs; cymes 

 nearly glabrous. Hokkaido, Honshu. 



Var. japonicum (Maxim.) Ohwi. P. japonicum Maxim.; 



P. nili\o7nontanuni Makino Oba-no-kihada. Leaflets 



9-15, rather smaller, spreading-pubescent beneath especially on 

 nerves; cymes puberulous. Honshu, Shikoku, Kyushu. 



Var. lavallei (Dode) Sprague. P. lavallei Dode Mi- 



YAMA-KiHADA. Similar to the preceding variety, but with 

 thicker, corky bark; leaflets broadly cuneate at base. Hok- 

 kaido, Honshu. 



6. SKIMMIA Thunb. Miyama-shikimi Zoku 



Glabrous, unarmed, evergreen shrubs; leaves simple, entire, alternate, short-petiolate, with pellucid glands; cymes terminal; 

 flowers bisexual or polygamous, white, small, 4- or 5-merous; sepals imbricate; petals oblong, valvate or slightly imbricate, longer 

 than the sepals; sterile carpels connate at base; pistillate flowers with 4-5 staminodes; ovary of 2-5 completely connate carpels, 

 each with a single ovule; style short, the stigma 2- to 5-lobed; drupe obovoid or globose, with 2-4 stones, the endosperm fleshy. 

 About 10 species, in e. Asia and the Himalayas. 



1. Skimmia japonica Thunb. S. oblata Moore; S. jra- 



grantissima Moore Miyama-shikimi. Dioecious shrub 



to 1.5 m. high, glabrous except for the puberulous inflores- 

 cence, the branches ascending, grayish; leaves often falsely 

 verticillate, narrowly oblong to narrowly obovate, 6-12 cm. 

 long inclusive of the short petioles, 2.5-3.5 cm. wide, abruptly 

 acute and ending in an obtuse tip, gradually narrowed to the 

 base, entire, lustrous on upper side, yellowish beneath; cymes 

 4-8 cm. across; flowers 4-merous, small, 5-6 mm. across, on 

 puberulous pedicels; sepals and bracts minute, broadly tri- 

 angular, minutely ciliate; petals narrowly oblong, 4-5 mm. 

 long, with pellucid glands; stamens as long as the petals; fruit 

 globose, about 7 mm. across, red, the style deciduous, 0.8 mm. 



long, with a somewhat capitate 4-fid stigma. Apr. Woods 



in mountains; Honshu (Kanto Distr. and westw.), Shikoku, 



Kyushu; rather common. Ryukyus, Formosa, and ? China. 



Forma rugosa (Yatabe) Ohwi. S. japonica var. rugosa 



Yatabe; S. rugosa (Yatabe) Makino Uchi-dashi-miyama. 



sHiKiMi. Nerves of leaves impressed on upper side. 

 Var. intermedia Komar. S. repens var. intermedia (Ko- 



mar.) Nakai; S. japonica var. repens forma rugata Ohwi 



Karafuto-shikimi, Uchikomi-miyama-shikimi. Low shrub 

 with ascending branches often creeping at base; leaves with 



impressed nerves on upper side. A rare variant first found 



in Sakhalin; also occurs in Hokkaido and Honshu (centr. & n. 



distr.). Forma repens (Nakai) Hara. S. repens Nakai; 5. 



japonica var. repens (Nakai) Ohwi Miyama-shikimi. The 



leaves flat. Hokkaido, Honshu, Shikoku, Kyushu; common 



in mountains. Sakhalin and s. Kuriles. 



7. GLYCOSMIS Correa Hana-shimbogi Zoku 



Unarmed trees or shrubs; leaflets 1-7, alternate, entire or serrate; panicles axillary, rarely terminal; flowers small, bisexual; 

 calyx 5-parted, the segments broad, imbricate; petals 5, free, oblong to rounded, imbricate; stamens 10, free, the filaments 

 subulate, dilated at base, the anthers small, often with a gland at the apex or on the back; disc stipelike or cup-shaped; ovary 

 2- to 5-locular, the style very short, the ovules solitary in each locule; berry juicy, 1- to 3-seeded, die seeds oblong, the testa mem- 

 branous, the endosperm absent. About 10 species, in se. Asia and Australia. 



1. Glycosmis pentaphylla (Retz.) Correa. Limonia 

 pentaphylla Retz.; G. citrifolia (Willd.) Lindl.; L. citrifolia 



Willd.; L. parvi flora Sims Hana-shimbogi, Gekkitsu-mo- 



DOKi. Large evergreen shrub with minute brown hairs 



while young; petioles 1-2 cm. long, the leaf-rachis short, the 

 leaflets 1-3, alternate, sessile, narrowly oblong, 7-12 cm. long. 



2-3.5 cm. wide, obtuse to acute; panicles axillary, densely 

 flowered; flowers small, short-pedicelled, 5-merous; petals about 

 3 mm. long; stamens 10, as long as the petals, glabrous; ovary 

 glabrous. Kyushu (southern distr., possibly not indigen- 

 ous). s. China, India, Indochina, and Malaysia. 



8. CITRUS L. 



Mikan Zoku 



Usually armed, evergreen shrubs or trees; leaves alternate, simple, entire or obtusely toothed, coriaceous, lustrous, with pel- 

 lucid glands, the petioles often winged; flowers bisexual, axillary, solitary, fascicled or in short panicles, white, fragrant; calyx 

 cup-shaped or urceolate, 3- to 5-lobed; petals 4-8, narrowly oblong, imbricate; stamens 15 or more, in a few fascicles; disc large, 

 cup-shaped or annulate; ovary 8- to 15-locular; style long, deciduous, the stigma capitate, the ovules several in each locule; berry 

 large, globose, with several segments filled with juicy pulp composed of stalked pulp-vesicles; seeds 1-8 in each locule, without 

 endosperm. Many species in India and se. Asia. 



