18 CRUCIFER.E. 



cyliudracea complauata, 8 mm. louga, circ. 2 mm. labx, glabra, utraque obtusa. 

 Semiua uumerosa oblique reuiformia 4- mm. lata, testa reticuLxta. 



Hab. Fokieu : Kosau, leg. S. Nagasawa, Aprili. 1910. (No. 258.) 

 Differs from tlie type by the mucli larger bracts wliicli are so large as 

 cauliue leaves. Petals are usually iu a trausitioual stage betweeu stameus 

 aud tliemselves. Tliey liave very ofteu au autlier-cell ou oue side. I could 

 fiud but oue uormal j)etal out of several wlucli I examiued iu many 

 flowers. 



Arabis Linn. 



Arabis kelung-insularis Hayata sp. uov. Perenuis?, erecta 30 cm. 

 longa, siu'sum ramosa, brevissimo stellato-liirsuta. Folia radicalia uou vissa. 

 Folia caiiliua inferiora ovata, 5 cm. longa 3 cra. lata, apice rotuudata, margine 

 deorsura grosse deutata vel deuticulata, sm-sum subiutegi-a, sessilia basi 

 aiuiculato-cordata, folia superiora minora oblonga 3 cm. louga 1 cm. lata basi 

 sessilia amiculata apice obtusa vel acutiuscula folia omnia crassiuscula, 

 margine iiTegulariter deuticulata, uti'aque pagine tenuissime pilosa, i^ilis 

 brevissimis simpHcibus furcatis vel stellatis. Racemi ad apicem ramorum 

 termiuales, flores uon visi. Siliqua linearis, recta, suberecta, 3J cm. louga 

 2 mm. lata, complauata utriuque obtusa, facie medio l-costata, neiTosa. 

 Semina valde complanata, rotimdata, l^ mm. in diameti'o. 



Hab. lusul. Kelung, leg. S. Sasaki, 1910, Mai. 



Arabis lithophila Hayata sp. uov. Herba annua ? pilosiuscula ; 

 caulis 30 cm. lougus, sub-simplex. Folia radicalia obovato-spatliulata, 

 10 cm. longa 3^ cm. lata apice rotundatii, a medio deorsum attenuata, ad 

 basin 1 cm. lata, margiue subiutegra, crassiuscula, utraque teuuissime pilosa, 

 piUs brevissimis simplicibus fm'catis vel stellatis, folia cauliua minora 

 oblongo-lauceolata basi am-iculata margine denticulata. Racemi terminales. 

 Sepala obovata oblouga, 3mm. louga, IJ mm. lata, apice obtasa, 5-nema. 

 Petala obovato-cuueata 5 mm. longa prope apicem 2 ram. lata apice rotundata 

 deorsum cuneata ad basiu subunguiculata. Stamiua 6, 4 mm. longa, antlieris 

 oblongo-liuearibus apice apiculatis. Stigma subsessile integi-um vel tenuissirae 



