380 



Fagaceae; Ulmaceae 



1. Castanopsis cuspidata (Thunb.) Schottky. Quercus 

 cuspidata Thunb.; Pasania cuspidata (Thunb.) Oerst.; P. 

 cuspidata var. thunbergii Makino; Lithocarpus cuspidata 

 (Thunb.) Nakai; Pasaniopsis cuspidata (Thunb.) Kudo; Shiia 



cuspidata (Thunb.) Makino Tsubura-jii. Much branched 



evergreen tree, the branchlets with scurfy appressed hairs while 

 young; leaves rather coriaceous, ovate-oblong, broadly lanceo- 

 late or oblong, sometimes ovate, usually 5-10 cm. long, 2-3 

 cm. wide, long-acuminate, acute to subrounded at base, un- 

 dulately toothed on upper margin, smooth, glabrous and deep 

 green above, gray-brown to brownish beneath with appressed 

 brownish scales, the petioles 5-10 mm. long, soon becoming 

 smooth; staminate aments 5-10 cm. long; pistillate aments 

 on the upper part of the branches; fruiting involucre sub- 



globose, sessile, with small protuberances arranged in 1 or 2 

 series of transverse lines, densely soft grayish puberulent; nuts 

 subglobose to ovoid-globose, 8-10 mm. in diameter. May- 

 June. Warmer parts; Honshu (Kanto Distr. and westw.), 



Shikoku, Kyushu. Korea. 



Var. sieboldii (Makino) Nakai. Pasania cuspidata var. 

 sieboldii Makino; Pasania sieboldii (Makino) Makino; Litho- 

 carpus cuspidata var. sieboldii (Makino) Nakai; Shiia sieboldii 



(Makino) Makino; Pasaniopsis sieboldii (Makino) Kudo 



SuDA-jii. Branches thicker; leaves thicker and the nuts 



larger, ovoid-oblong; bark fissured in younger trees. 



Warmer areas; Honshu (Kanto Distr. and westw.), Shikoku, 

 Kyushu; common in environs of Tokyo. Korea. 



5. PASANIA Oerst. Mateba-shii Zoku 



Evergreen trees with entire or toothed, coriaceous, petiolate leaves; staminate flowers in slender erect aments, the perianth 

 4- to 6-merous; stamens 6-12, longer than the perianth; pistillate flowers 1-3 or 5 together, subtending the staminate aments or 

 borne separately, involucrate; ovary 3-locular; styles 3, erect, cylindric with a punctiform stigma; nuts wholly or partially in- 

 volucrate, maturing the second year, the involucres with annular rings or scales. About 100 species, in e. and s. Asia. 



lA. Young branches nearly glabrous; leaves yellowish green beneath, with about 12 pairs of lateral nerves I. P. edulis 



IB. Young branches densely short-pubescent; leaves silvery beneath, with about 7 pairs of lateral nerves 2. P. glabra 



1. Pasania edulis Makino. Quercus edulis Makino; Li- 

 thocarpus edulis (Makino) Nakai; Q. glabra var. micrococca 

 Bl.; Q. glabra var. sublepidota Bl.; L. sublepidota (Bl.) Koidz. 



Mateba-shii. Branches stout, glabrous or nearly so; leaves 



coriaceous, oblanceolate to obovate-oblong, sometimes oblong, 

 8-16 cm. long, 3-7 cm. wide, acute with an obtuse tip, acute at 

 base, glabrous except the ascending pubescence on midrib 

 beneath and on petioles while young, lustrous above, obsoletely 

 scaly and somewhat brownish beneath, with 10 to 12 pairs of 

 lateral nerves, the petioles 1.5-3 cm. long; staminate aments 

 linear, erect; nuts narrowly ovoid to oblong, 2-2.5 cm. long, 



the involucre shallow, with small imbricate scales. June. 



Honshu (s. Kanto Distr. and westw.), Shikoku, Kyushu. 



Ryukyus. 



2. Pasania glabra (Thunb.) Oerst. Quercus glabra 



Thunb.; Q. sieboldiana Bl.; Lithocarpus glabra (Thunb.) 

 Nakai; Kuromatea glabra (Thunb.) Kudo; P. sieboldiana 



(Bl.) Nakai Shikibukagashi. Branches rather stout, with 



densely grayish or yellowish brown pubescence while young; 

 leaves coriaceous, oblong, sometimes broadly oblanceolate, 10- 

 15 cm. long, 4-6 cm. wide, abruptly acute to acuminate with 

 an obtuse tip, acute at base, pubescent on both surfaces while 

 very young, glabrescent and lustrous above, silvery beneath 

 with obscure lepidote scales, sometimes with few obscure undu- 

 late teeth on upper margin, the lateral nerves 6 to 8 pairs, the 

 petioles pubescent, 8-10 mm. long; staminate aments erect, 

 densely flowered, linear; nuts broadly ovoid or ellipsoidal, 

 1.5-2 cm. long, depressed at base, the involucre shallow, with 



small adnate scales. Oct.-Nov. Honshu (Kinki and Chii- 



goku Distr.), Shikoku, Kyushu. Ryukyus and Formosa. 



Fam. 67. ULMACEAE Nire Ka Elm Family 



Monoecious or hermaphroditic shrubs or trees sometimes with short spine-tipped spurs; leaves simple, petiolate, alternate, 

 the stipules deciduous; flowers bisexual or unisexual, axillary and fasciculate, solitary or cymose; perianth 4- to 5-(-8) parted; 

 stamens as many as the perianth lobes and opposite them, the filaments erect; ovary superior, 1-locular, the ovules anatropous, 

 pendulous; styles solitary and bifid or 2; fruit a samara, a drupe or resembling an achene; seeds lacking endosperm, the embryo 

 straight or curved. About 15 genera, with about 200 species, chiefly in the N. Hemisphere. 



lA. Leaves pinnately nerved, the lowest pair much shorter than the median ones; perianth-segments connate below; fruit dry. 



2A. Flowers bisexual; fruit a samara 1 . Vlmus 



2B. Flowers unisexual; fruit achenelike 2. Zelkpva 



IB. Leaves palmately 3-nerved from base; perianth-segments nearly free or very shordy connate below; fruit a drupe. 



3A. Flowers cymose, unisexual or polygamous; leaves serrulate, with lateral nerves not ending in the marginal teeth 3. Trema 



3B. Flowers unisexual, the pistillate solitary or few, in axillary fascicles, the staminate cymose. 



4A. Lateral nerves of leaves arcuate near the margin, not ending in the teeth 4. Celtis 



4B. Lateral nerves of leaves straight, ending in the teeth 5. Aphananthe 



1. ULMUS L. Nire Zoku 



Deciduous or semievergreen trees and shrubs; leaves simple, toothed, petiolate, sometimes shallowly 2- to 3-fid at the apex, 

 usually oblique at base, the stipules lateral, free; flowers bisexual, small, precocious or in leaf axils in autumn, fasciculate or 

 racemose, the perianth campanulate, 4- to 9-merous; stamens as many as the perianth-lobes; styles short, deeply bifid; fruit a 



broadly winged pedicelled pendulous samara; seeds flat, endosperm absent, the embryo straight. About 20 species, in the 



temperate regions of the N. Hemisphere. 



