ROSACEAE 



535 



Mar.-May. Honshu (s. Kanto Distr. and Kii Prov.), Shikoku, 

 Kyushu. s. Korea and Formosa. 



24. Rubus hirsutus Thunb. jR. thunbergii Sieb. & Zucc. 



KusA-icHiGO. Suffruticose or a small shrub with few 



slender prickles and dense spreading pubescence, often with 

 short glandular hairs, the flowering branchlets rather short; 

 leaflets membranous, 3 (sometimes 5 on vigorous shoots), 

 ovate, 2.5-7 cm. long, 2-4 cm. wide, acute, rounded at base, 

 doubly toothed, prominendy hairy on both sides, the petioles 

 soft-pubescent, sometimes with glandular hairs, the stipules 

 lanceolate; flowers 1 or 2, white, erect, about 3 cm. across, the 

 pedicels 11-6 cm. long, densely glandular-hairy; calyx-lobes 

 lanceolate-deltoid, densely puberulent on both sides, glandular- 

 pilose outside, caudately elongate above; petals obovate to 

 ovate-orbicular, 15-20 mm. long; fruit red, globose, the fruit- 

 lets many. Apr.-May. Thickets and waste grounds in 



lowlands and low mountains; Honshu, Shikoku, Kyushu; 



rather common. Korea and China. Cv. Harae. R. 



hirsutus forma harae (Makino) Ohwi; R. thunbergii var. 



harae Makino Yaezaki-kusa-ichigo. A double-flowered 



cultivar. Forma simplicifolius (Makino) Ohwi. R. 



thunbergii var. simplicifolius Makino Maruba-kusa-ichigo. 



Leaves simple, 3-cleft; gradually grading into the typical 

 phase through forma ohmatiensis (Nakai) Ohwi. R. oh- 



matiensis Nakai Omachi-ki-ichigo. With simple and 



pinnately ternate leaves on the same plant. 



25. Rubus illecebrosus Focke. R. rosaefolius var. 

 coronarius f. simpliciflorus Makino; R. commersonii var. sim- 

 pliciflorus (Makino) Makino; R. commersonii var. illecebrosus 



(Focke) Makino; R. ya\usimensis Masam. Bara-ichigo. 



Subshrub with long-creeping stolonlike rhizomes, the prickles 

 flat, the flowering branches erect, 20-60 cm. long, obtusely 

 angled, glabrous, slightly prickly; leaflets 1-7, lanceolate to 

 broadly so, 3-8 cm. long, 1-2 cm. wide, acuminate, usually 

 rounded at base, doubly acute-toothed, glabrous to thinly ap- 

 pressed-pubescent above, often appressed-pubescent on nerves 

 beneath, the petioles glabrous, loosely prickly; flowers white, 

 few to rather many, in a terminal corymb, the pedicels gla- 

 brous, sparingly prickly; calyx glabrous, the lobes narrowly 

 ovate, caudate, white-tomentose on margin and inner side; 

 petals ovate-orbicular, 15-20 mm. long; fruit subglobose or 



broadly ellipsoidal, red. July-Aug. Thickets and waste 



grounds; Honshu (centr. distr.), Shikoku, Kyushu. 



26. Rubus commersonii Poir. R. eustephanos var. 



coronarius Koidz. Tokin-ibara. Nearly glabrous shrub 



with flat prickles, the flowering branchlets rather elongate, on 

 last year's shoots, obtusely angled, sparingly prickly; leaflets 

 3-5, ovate-oblong to oblong, 2-5 cm. long, 1-3 cm. wide, 

 doubly acute-toothed; flowers 1 or 2, white, 5-6 cm. across, 

 double, the pedicels 5-10 cm. long, sparsely prickly; calj-x- 

 lobes broadly ovate, densely appressed-puberulent inside, 

 thinly puberulent outside, abruptly mucronate or short-cau- 

 date. May-June. Chinese species long cultivated in our 



area. 



27. Rubus oldhamii Miq. R. pungens var. oldhamii 



(Miq.) Maxim. San.vgi-ichigo. Shrub with rather 



slender slighdy flattened prickles on the elongate, decumbent, 

 slender branches and pedicels, die flowering branchlets short, 

 sometimes much abbreviated, sparingly short-pubescent above; 

 leaflets membranous, 5 (-7), the lateral ones smaller, ovate, 

 obtuse to acute, the terminal one rhombic to deltoid-ovate, 

 2-4 cm. long, 1-3 cm. wide, acuminate, acute to truncate at 

 base, often 3-lobed, doubly incised-toothed, sparingly ap- 



pressed-pubescent to nearly glabrous; flowers l(-3); calyx 

 8-12 mm. long, short-pubescent outside and glandular hairy, 

 with many slender scarcely flattened prickles, die lobes nar- 

 rowly ovate-deltoid, long-acuminate, rather densely appressed- 

 puberulent inside; petals white, obovatc-spathulate, about 10 

 mm. long; carpels soft-puberulent, the receptacle short-pilose. 



May-June. Woods in mountains; Honshu, Shikoku, 



Kyushu; rather rare. 



28. Rubus idaeus L. var. aculeatissimus Reg. & Til. 

 R. melanolasius Focke; R. idaeus subsp. sachalinensis var. 

 matsumuranus (Lev. & Van't.) Koidz.; R. sachalinensis Lev.; 

 R. idaeus subsp. inermis Koidz.; R. idaeus subsp. melanolasius 



Focke Ezo-icHiGo, Karafuto-ichigo. Shrub, the branches 



with slender spreading not flattened bristlelike prickles, glan- 

 dular-pilose and short-pubescent, the flowering branchlets elon- 

 gate, 15-40 cm. long; leaflets 3 (sometimes 5 on vigorous 

 shoots), the lateral ones slightly smaller, the terminal rhombic- 

 ovate to broadly ovate or elliptic, 4-7 cm. long, 2.5-5 cm. wide, 

 acuminate to acute, obtuse to rounded at base, irregularly and 

 coarsely acute-toothed, with dense short white-woolly hairs 

 beneath, the petioles prickly and short-pubescent, sometimes 

 also with glandular hairs; inflorescence several-flowered, 

 prickly, short-pubescent and glandular-pilose, the flowers 

 white; calyx-segments narrowly ovate-deltoid, densely white- 

 tomentose inside; petals spathulate, 5-7 mm. long; fruit glo- 

 bose, red, the fruitlets densely woolly-pubescent. June-July. 



Hokkaido. e. Asia and N. America. Forma concolor 



(Komar.) Ohwi. R. melanolasius var. concolor Komar.; R. 

 strigosus var. \anayamensis (Lev. & Van't.) Koidz.; R. \anaya- 



mensis Lev. & Van't. Kanayama-ki-ichigo. Leaves green, 



not white-tomentose beneath. Hokkaido. Temperate to 



cold regions of e. Asia. 



29. Rubus yabei Lev. & Van't. R. idaeus subsp. nip- 



ponicus Focke Miyama-urajiro-ichigo. Closely resembles 



the preceding species, the plant more slender, usually less 

 densely prickly, with glandular hairs usually only on pedicels 

 and calyx; leaflets somewhat smaller, thinner in texture, often 

 5, sometimes 3; calyx usually without prickles, the lobes often 



filiform-elongate above. June-July. Woods and thickets in 



high mountains; Honshu (n. and centr. distr.). Forma 



eglandulosus (Ohwi, pro var.) Ohwi. Naeba-ki-ichigo. 



Without glandular hairs. Forma marmoratus (Lev. & 



Van't.) Ohwi. R. marmoratus Lev. & Van't.; R. idaeus 

 subsp. melanolasius var. marmoratus (Lev. & Van't.) Hara; 



R. yatsugatakensis Koidz. Shinano-ki-ichigo. Without 



glandular hairs; leaves green and not woolly-tomentose be- 

 neath. Both forms occur in the high mountains of central 

 Honshu. 



30. Rubus coreanus Miq. R. to^^ura Sieb. Tok- 



KURi-icHiGO. Shrub, die branches with stout often curved 

 flattened prickles, the flowering branchlets glabrous; leaflets 

 rather thick, 5-7, glabrous on both sides or slighdy pubescent 

 on nerves beneath, with awn-tipped irregular teeth, the lateral 

 leaflets ovate, acute to obtuse, the terminal leaflet slighdy 

 larger, rhombic-ovate to suborbicular, 4-6 cm. long, 3-6 cm. 

 wide, very acute, often 3-lobed; corymbs terminal and axillary, 

 rather densely short-pubescent; calyx thick, the lobes broadly 

 lanceolate, caudate-acuminate, densely white-tomentose inside; 

 petals shorter than the calyx-segments, obovate, about 5 mm. 

 long, white, erect. Rarely cultivated. Korea and China. 



Rubus hiraseanus Makino. O-tokkuri-ichigo, is an al- 

 leged hybrid of No. 30 and No. 33. 

 3L Rubus mesogaeus Focke. R. kjnashii Lev. & Van't.; 



