ROSACEAE 



533 



fruit enclosed in a persistent calyx, red; stones pitted. Apr.- 



May. Low mountains; Honshu, Shikoku, Kyushu; common. 



China. 



Var. subcrataegifolius (Lev. & Van't.) Ohvvi. R. crataegi- 

 folitis var. subcrataegifolius Lev. Sc Van't.; R. /(^ochneanus 



Focke; R. incisus var. /(^oe/ineanus (Focke) Koidz. Mi- 



YAMA-NiG.\-icHiGO. Similar to the typical phase but larger, 

 with few slender prickles, the fertile branchlets slightly elon- 

 gate, to 7-15 cm. long; leaves 4-8 cm. long, acuminate, 3- 



lobed; flowers 1-3; calyx-segments caudately acuminate. 



May-June. Mountains; Honshu; rather common. 



10. Rubus crataegifoHus Bunge. R. wrightii A. Gray; 

 R. morijolius Sieb., non P. J. Muell.; R. savatieri L. H. Bailey 



KuMA-icHico, Ezo-No-KUMA-icHiGO, Tachmchigo. Shrub 



with rather stout flattened prickles, the flowering branches 

 few-leaved, slightly elongate, more or less pubescent; leaves 

 broadly ovate to orbicular, 4-10 cm. long, 3.5-8(-10) cm. 

 wide, acuminate to sharply acute, truncate to cordate at base, 

 glabrous to loosely appressed-pubescent on upper side, with 

 spreading hairs beneath especially on the nerves, 3(-5)-lobed 

 or -cleft and irregularly toothed, the lateral lobes acute; in- 

 florescence 2- to 6-flowered, rather densely short-pubescent, 

 the pedicels short, 5-10 mm. long; calyx 8-10 mm. long, cup- 

 shaped, short-pubescent outside, the lobes narrowly ovate, 

 acuminate, densely white-tomentose on margin and inner side; 

 petals white, obovate; fruit globose, red, the stones pitted, 



about 2 mm. long, the receptacle pilose. Apr.-June. Waste 



grounds and clearings in mountains; Hokkaido, Honshu, Shi- 

 koku, Kyushu; common with variable pubescence. China. 



11. Rubus pseudoacer Makino. Miyam.\-momiji-ichi- 

 Go. Scarcely armed small erect shrub, the fertile branch- 

 lets rather elongate, nearly glabrous; leaves membranous, or- 

 bicular, cordate, 6-10 cm. long and as wide, palmately 5- to 

 7-parted with acuminate, often 3-fid, incised and toothed seg- 

 ments, slightly pilose to glabrous on both sides; flowers few, 

 loose, on slender glabrous pedicels 2-4 cm. long; calyx gla- 

 brous outside, the tube cup-shaped, the segments ovate, cau- 

 date, densely white-puberulent inside and on margin; petals 

 broadly ovate, 4-6 mm. long; fruit globose, the fruitlets gla- 

 brous; stones pitted. July-Aug. Mountains; Honshu 



(Kanto to Kinki Distr.), Shikoku; rare. 



12. Rubus grayanus Maxim. Ryukyu-ichigo, Shima- 

 AWA-icHico. Glabrous unarmed or very sparingly prickly 

 shrub with elongate branches; leaves ovate or elliptic, 6-10 cm. 

 long, 4-6 cm. wide, obtuse to acute, rounded to shallowly 

 cordate at base, usually undivided, with shallow teeth; flowers 

 solitary on a short ferule branchlet, the pedicels rather slender, 

 1-1.5 cm. long; calyx with shallowly cup-shaped tube, the seg- 

 ments narrowly ovate-deltoid, acuminate, 6-10 mm. long, 

 white-tomentose on margin and on inner side; fruit globose; 



stones pitted. Kyushu (Yakushima and Tanegashima). 



Ryukyus and s. China. 



Var. chaetophorus Koidz. Togf.-ryukyu-ichigo. Prickles 

 distinct; leaves 3-lobed. Kyushu (Oosumi Prov.). 



13. Rubus trifidus Thunb. R. hydrastijotius A. Gray 



Kaji-ichigo. Stout bushy unarmed shrub to L5 m. 



high; branches elongate, terete, rather stout, pubescent and 

 glandular-hairy; leaves orbicular, cordate to truncate at base, 

 5- to 7-c!eft or shallowly parted with very acute and doubly 

 toothed lobes, slightly lustrous and green on upper side; in- 

 florescence few-flowered; flowers white, 3—4 cm. across; calyx 



12-15 mm. long, the lobes narrowly ovate, subcaudate, white- 

 tomentose on margin and on inner side; petals orbicular; 

 fruit globose, yellow; stones pitted. Apr.-May. Near sea- 

 shores in warmer parts of Honshu (Pacific side, from Awa to 

 Kii Prov., incl. Izu Isls.) ; rather common and much planted 

 for the edible fruit. 



Hybrids of R. trifidus with the second parent one of the 

 following: 9, 15, 17, or 18: R. X medius O. Kuntze. Hime- 

 KAjr-icHiGo; R. X manazurensis Hisauchi. Manazuru-ki- 

 icHico; R. X laudabilis Koidz. Toge-nashi-ichigo; R. X 

 koidzumii Hisauchi. O-toge-nashi-ichigo; R. X hisautii 

 Koidz. Yabu-awa-ichico; R. X kyusianus Koidz., non Na- 

 kai; R. X yenoshimanus Koidz.; R. X omogoensis 

 Koidz.; R. X yakumontanus Masam.; R. X tanakae O. 

 Kuntze; R. X ribifolius Sieb. & Zucc; others are reported. 



14. Rubus chingii Hu. R. officinalis Koidz. Gosho- 



ICHIGO. Very sparingly prickly shrub with rather stout 

 branches, the flowering branches glabrous, short; leaves mem- 

 branous, suborbicular, shallowly cordate at base, 5-10 cm. in 

 diameter, deeply 5-cleft, with long-acuminate doubly toothed 

 segments, appressed-pubescent on nerves on both sides or gla- 

 brous above, the stipules filiform; flowers solitary, on slender 

 glabrous pedicels 2-3 cm. long; calyx with nearly flat tube, 

 the segments ovate or oblong, 6-8 mm. long, rounded to ob- 

 tuse and sometimes with a mucro at apex, short appressed- 

 pubescent on both sides; petals white, about 15 mm. long; 



fruit globose, fruitlets with dense spreading hairs. May. 



Mountains; Kyushu (n. distr.). China. 



15. Rubus ribesoideus Matsum. R. trifidus var. tomen- 

 tosus Makino Hachijo-ichigo, Birodo-kaji-ichico. Un- 

 armed shrub, the branches rather stout, densely velvety- 

 puberulent while young, the fertile branchlets short; leaves 

 broadly deltoid-ovate, 5-7 cm. long, 4-6 cm. wide, acute to 

 short-acuminate, truncate to cordate at base, 3- to 5-cleft or 

 -lobed, coarsely and irregularly toothed, short-puberulent on 

 both sides especially on nerves beneath; flowers solitary, the 

 pedicels 1-2 cm. long, nodding above, densely velvety-puber- 

 ulent; calyx-lobes ovate-oblong, mucronate, densely puberulent 

 inside; petals ovate -orbicular, spreading, about 15 mm. in di- 

 ameter; fruit globose, the fruitlets nearly glabrous. Dec- 

 Apr. Near seashores in warmer regions; Honshu (Pacific 

 side), Shikoku, Kyushu. 



16. Rubus ohsimensis Koidz. Maruba-no-momiji- 

 ICHIGO. Nearly unarmed shrub, the branches soft-pubescent 

 while young, the flowering canes very short; leaves broadly 

 ovate to ovate-orbicular, 3-7 cm. long, 3-6 cm. wide, acute, 

 cordate at base, irregularly duplicate-toothed, 3- to 5-cleft, 

 short-pubescent on nerves on both sides, the perioles pubescent; 

 flowers solitary, the pedicels densely pubescent, 8-12 mm. long; 

 calyx appressed-pubescent, the segments narrowly ovate, 6-8 

 mm. long, acute; petals ovate-orbicular, longer than the caly.x- 

 lobes; carpels slighdy pubescent; fruit globose, the fruidets 

 glabrous; stones pitted. Mar.-Apr. Near seashores; Hon- 

 shu (Izu Isls.), Kyushu. Possibly a hybrid between Nos. 15 

 and 18. 



17. Rubus corchorifolius L. f. R. villosus Thunb.; R. 



olivcri Miq.; R. corchorifolius var. glaber Matsum. Birodo- 



icHiGO. Shrubs, the branches elongate, with rather stout 

 flat prickles, densely pubescent when young with short soft 

 spreading hairs, the flowering branchlets 2-5 cm. long, prickly; 

 leaves membranous, elliptic-ovate or narrowly so, 4-10 cm. 



