490 



Cruciferae 



Var. japonica (H. Boiss.) Ohwi. A. amplexicauUs var. 

 japonica H. Boiss.; A. boissieuana Nakai; A. serrata var. japon- 

 ica i. grandiflora (Nakai) Ohwi; A. jauriei var. grand: flora 

 Nakai; A. \ishidae Nakai; A. serrata var. japonica f. glabre- 

 scens (Oliwi) Ohwi; A. serrata var. glabrescens Ohwi; A. ser- 

 rata var. japonica f. jauriei (H. Boiss.) Ohwi; A. jauriei H. 



Boiss.; A. iwatensis Makino Iwa-hatazao. Radical leaves 



gradually narrowed to a ratiier short petiole, the teeth usually 

 less prominent. Rather common in mountains, often al- 

 pine; Honshu (centr. and n. distr.). 



Var. glauca (H. Boiss.) Ohwi. A. glauca H. Boiss.; A. 

 pseudoauriculata H. Boiss.; A. boissieuana var. glauca (H. 

 Boiss.) Koidz. Ezo-no-iwa-hatazao. Resembles var. ja- 

 ponica, but the radical leaves pilose with coarser, 2-parted, 



distinctly stipitate hairs above. Hokkaido, Honshu (n. 



distr.). s. Kuriles and Sakhalin. 



3. Arabis hirsuta (L.) Scop. Turritis hirsuta L.; A. 



sagittata DC; A. nipponica H. Boiss. Yama-hatazao. 



Erect perennial with 2- to 4-branched hairs; stems erect, usu- 

 ally simple, leafy, 30-80 cm. long, often with spreading hairs 

 on lower part; radical leaves oblanceolate, 5-10 cm. long, 1-2 

 cm. wide, obsoletely few-toothed, gradually narrowed to the 

 petiole, the cauline sessile, 2-7 cm. long; petals cuneate-ob- 

 lanceolate, 3-5 mm. long; siliques appressed to the axis or 

 erect, 4-6 cm. long, 1-1.2 cm. wide, the axis much-elongate; 

 style very short, stout; seeds about 1.2 mm. long, very nar- 

 rowly winged. May-June. Sunny hills and low moun- 

 tains; Hokkaido, Honshu, Kyushu. Cool to warm regions 



of the N. Hemisphere. 



4. Arabis glabra (L.) Bernh. Turritis glabra L.; A. 



perjoliata Lam. Hatazao. Glaucescent erect biennial, 



hairy only on the lower half; stems usually simple, to 80 cm. 

 long, terete; radical leaves oblong-oblanceolate or narrowly 

 oblong, hirsute, the cauline sagittate, entire or nearly so, 

 gradually narrowed and subobtuse to obtuse at apex; flowers 

 on an elongate raceme, the petals creamy white; siliques ap- 

 pressed to the axis; seeds about 0.8 mm. long, not winged, 



nearly 2-seriate. Apr.-June. Sunny places in lowlands to 



foothills; Hokkaido, Honshu, Shikoku, Kyushu. Temper- 

 ate regions of the N. Hemisphere. 



5. Arabis pendula L. A. subpendula Ohwi Ezo- 



hatazao. Erect hirsute biennial, with simple spreading 

 and 2- to 5-branched short hairs; stems 50-100 cm. long, erect, 

 branched above, hirsute; lower cauline leaves oblong, obovate 

 or broadly lanceolate, 3-10 cm. long, 1-5 cm. wide, acute to 

 acuminate, sessile and slightly auriculate, toothed, coarsely hir- 

 sute above, usually hirsute on the nerves beneath; racemes 

 loosely many-flowered; sepals glabrous to sparingly pilose, 

 about 1.8 mm. long; petals white, oblanceolate, about 3 mm. 

 long; siliques flat, nodding or deflexed, 7-10 cm. long, 1.5-2 

 mm. wide; style very short; seeds narrowly winged on margin, 



1-seriate. June-Aug. Woods and thickets in mountains; 



Hokkaido, Honshu (n. and centr. distr.). Europe, Siberia, 



Manchuria, and Sakhalin. 



6. Arabis flagellosa Miq. Suzu-shiro-s6. Perennial 

 stoloniferous herb with (2-) 3- to 4-branched hairs; rhizomes 

 slender, branched; stems simple, 10-25 cm. long, few-leaved; 

 radical leaves petiolate, 3-7 cm. long, 8-20 mm. wide, spathu- 

 late, toothed, the cauline sessile, 1-2 cm. long, ovate; leaves of 

 the stolons broadly obovate to narrowly ovate, 1-3.5 cm. 

 long, 1-1.5 cm. wide, toothed, cuneate; siliques 4-10, in a 

 loose raceme, ascending to spreading, 2-3 cm. long, about 1.5 



mm. wide, glabrous; style slender; seeds several to more than 



10, very narrowly winged. ^Mar.-Apr. Foothills; Honshu 



(Kinki Distr. and westw.), Shikoku, Kyushu. Ryukyus. 



Forma lasiocarpa (Matsum.) Ohwi. A. flagellosa var. 



lasiocarpa Matsum. Ke-suzu-shieo-s6. Siliques pilose. 



Occurs with the typical phase. 



7. Arabis tanakana Makino. Kumoi-nazuna. Stel- 

 late-pubescent perennial herb; stems 3-8 cm. long, erect, few- 

 leaved; radical leaves rosulate, linear-spathulate, entire, 5-10 

 mm. long, 1.5-3 mm. wide; racemes usually solitary, 3- to 10- 

 flowered; petals 2.5-3 mm. long; siliques flat, spreading, about 

 10 mm. long, 1 mm. wide, linear; seeds nearly in 2 series, 

 wingless. — — July-Aug. Dry alpine slopes and rocky cliffs; 

 Honshu (centr. distr. on Mount Shirane in Kai and Mount 

 Shirouma in Shinano) ; very rare. 



8. Arabis lyrata L. var. kamtschatica Fisch. A. I^am- 

 tschatica Fisch.; A. lyrata sensu auct. Japon., non L.; A. 



petraea var. \amtschatica (Fisch.) Regel Miyama-hatazao. 



Green to glaucous perennial, nearly glabrous to sparingly 

 pilose; stems few, erect or ascending, 10-30 cm. long, few- 

 leaved, sometimes sparingly branched, soft-hairy toward the 

 base; radical leaves lyrate, abruptly petiolate, 2-5 cm. long, 

 5-8 mm. wide, with simple and branched stipitate hairs, the 

 cauline leaves broadly lanceolate to broadly hnear, 1-4 cm. 

 long, 1-10 mm. wide, the lowermost dentate-serrate, the up- 

 per entire; racemes loosely few-flowered; petals cuneate-ob- 

 ovate, white, sometimes with a rosy hue, 3.5-4.5 mm. long; 

 siliques obliquely spreading, 3-4 cm. long, 1-1.2 mm. wide; 

 style short; seeds about 1.5 mm. long with a very narrow 



wing on the upper end. June-Aug. Rocky dry slopes in 



high mountains; Hokkaido, Honshu (centr. and n. distr. and 

 Mount Daisen in Hoki Prov.) . ne. Asia and N. America. 



9. Arabis kawasakiana Makino. Tachi-suzu-shiro-so. 

 Resembles the preceding; glaucous biennial herb; stems erect, 

 25-40 cm. long, few-leaved, slightly branched below, usually 

 glabrous; flowers several to more than 10; petals 4-6 mm. 

 long; siliques 2-4 cm. long, 1-1.2 mm. wide, straight; style 



very short; seeds about 1 mm. long, wingless. Apr.-June. 



Sunny sandy places in lowlands especially near tlie sea; Hon- 

 shu (Kinki Distr. and westw.), Shikoku. 



10. Arabis gemmifera (Matsum.) Makino. Cardamine 

 gemmijera Matsum.; A. axillaris Komar.; A. maxima wiczii 

 N. A. Busch; C. greatrexii Miyabe & Kudo; A. greatrexii 

 (Miyabe & Kudo) Miyabe & Tatew.; A. halleri sensu auct. 



Japon., non L.; A, senanensis Makino Hakusan-hatazao. 



Perennial; stems 10-30 cm. long, solitary or tufted, often 

 spreading-pubescent, few-leaved, decumbent after anthesis 

 and bearing innovation-shoots in the leaf-axils; radical leaves 

 lyrate, 2-6 cm. long, 8-15 mm. wide, with scattered bifurcate 

 hairs or nearly glabrous, the lower cauline leaves often petio- 

 late, the upper ones oblanceolate to narrowly lanceolate, 1-5 

 cm. long, acute, few-toothed, glabrous; racemes elongate and 

 loose after anthesis; petals 5-6 mm. long; siliques obliquely 

 spreading, 10-20 mm. long, 0.8-1 mm. wide, somewhat 

 torulose, compressed, glabrous; style slender, about 1 mm. 

 long, the stigma capitellate; seeds scarcely winged, about 1 



mm. long, in 1 series. Mar.-May. Hokkaido (sw. distr.), 



Honshu, Shikoku, Kyushu. ^Forma alpicola (Hara) Ohwi. 



A. gemmijera var. alpicola Hara Ibuki-hatazao. Densely 



hairy on all parts. Honshu (Mount Ibuki in Oomi Prov.). 



Korea. 



