18 CRUCIFERJE. 



cylindracea complanata, 8 mm. longa, circ. 2 mm. lata, glabra, utraque obtusa. 

 iSemina numerosa oblique reniformia ^ mm. lata, testa reticulata. 



HAB. Fokien: Kosan, leg. S. NAGASAWA, Aprili. 1910. (No. 258.) 

 Differs from the type by the much larger bracts which are so large as 

 cauline leaves. Petals are usually in a transitional stage between stamens 

 .and themselves. They have very often an anther-cell on one side. I could 

 find but one normal petal out of several which I examined in many 

 flowers. 



Arabia LINN. 



Arabis kelung-insularis HAYATA sp. nov. Perennis ?, erecta 30 cm. 

 longa, sursum ramosa, brevissime stellato-hirsuta. Folia radicalia non vissa. 

 Folia caulina inferiora ovata, 5 cm. longa 3 cm. lata, apice rotundata, margine 

 deorsum grosse dentata vel denticulata, sursum subintegra, sessilia basi 

 auriculato-cordata, folia superiora minora oblonga 3 cm. longa 1 cm. lata basi 

 sessilia auriculata apice obtusa vel acutiuscula folia omnia crassiuscula, 

 margine irregulariter denticulata, utraque pagine tenuissime pilosa, pilis 

 brevissimis simplicibus furcatis vel stellatis. Bacemi ad apicem ramorum 

 terminales, flores non visi. Siliqua linearis, recta, suberecta, 3 cm. longa 

 '2 mm. lata, complanata utrinque obtusa, facie medio 1-costata, nervosa. 

 Semina valde complanata, rotundata, 1^ mm. in diametro. 



HAB. Insul. Kelung, leg. S. SASAKI, 1910, Mai. 



Arabis lithophila HAYATA sp. nov. Herba annua? pilosiuscula ; 

 -caulis 30 cm. longus, sub-simplex. Folia radicalia obovato-spathulata, 

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

 basin 1 cm. lata, margine subintegra, crassiuscula, utraque tenuissime pilosa, 

 pilis brevissimis simplicibus furcatis vel stellatis, folia caulina minora 

 oblongo-lanceolata basi auriculata margine denticulata. Racemi terminales. 

 Sepala obovata oblonga, 3 mm. longa, 1^ mm. lata, apice obtusa, 5-nervia. 

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

 deorsum cuneata ad basin subunguiculata. Stamina 6, 4 mm. longa, antheris 

 oblongo-linearibus apice apiculatis. Stigma subsessile integrum vel tenuissime 



