igo Bulletin 67. 



Radical leaves much less numerous, the blade thin and oval in outline and 

 on long and slender, slightly feathered petioles, sharply and irregularly 

 toothed, with a thin bloom ; lower stem leaves much like the radical ones, 

 but the uppermost oblong-lanceolate and clasping ; flower stems (very tall) 

 lightly glaucous-blue, the flowers bright yellow ; pod much as in Pak-Choi, 

 except that the beak is abrupt and very slender. 



**Plant truly annual; foliage loose and soft. 



3. Brassica Pe-Tsai. Pe-Tsai, etc. 



Sinapis Pekinensis, var. Pe-Tsai, Louriero, Flora Cochinchina, 400 (1790). 



Radical leaves numerous and large, light colored, oblong or obovate-oblong, 

 soft and crinkled and very veiny, the margins wavy, the wide lower portion 

 comprising a flat ribbed petiole i to 3 in. wide w-hich is margined by a wavy 

 or notched wide and thin wing ; lower stem leaves notched or crinkled-mar- 

 gined, the upper oblong-oval or oblong-lanceolate, all sessile and clasping 

 and more or less glaucous; flowers light j-ellow ; pod short (about ij^ 

 in.) and thick, softish, much broader and softer than in Pak-Choi, very grad- 

 ually narrowed into a cone-like short point. 



Louriero's description of the plant is as follows : 



" Sinapis Pekinensis. var. Pe tsai. a Cai ben. 



" Differ, spec. sin. foliis turbinato-ovatis, integris, crispis : petiolis sub- 

 planis, latis : silisquis glabris, planinsculis. 



"Hab., et notae. Caulis annuus, 2 pedalis, erectus, crassus, teres, 

 glaber. Folia radicalia turbinato-ovata, integra, serrato-runcinata, crispata, 

 glabra, flavescentia, tenerrima : petiolis sub-planis, latissimis, albis, sulcatis, 

 semiamplexicaulibus : caulina conica, sessilia integerrima. Spicse solitariae, 

 longissimse, patentes. Calycis foliola 4, oblonga, obtusa, erecta, lutea. 

 Corolla similiter lutea, 4-petala, patens. Siliquae lineares, compressae, 

 glabrae, 2-loculares : seminibus globosis, rufis. 



" Habitat Pekini culta, ubi omnium optima. In Cochinchina altius 

 crescit, inferior qualitate. In Lusitania satam, " et plantatam servo, sed 

 quotannis in peius degenerantem. 



■'Observ. Attendens ad varietates Brassicse oleracese in Europa cultas, 

 et facie inter se valde differentes dubitare csepi, non omnes istse sinapis 

 plantae dici etiam debeant varietates, non diversse species? 



Virtus. Fere eadem, quae praecedentium, sed debilior." 



4. Brassica J APONiCA, Siebold; Miquel, Prolusio Florae Japonicae, 74 

 (1865-6) ; Georgeson, Amer. Gard. xii. 653 (i89i),in part. Sinapis Japonica, 

 Thunberg, Flora Japonica, 262 (1784). Caufornia PeppERGRass, etc. 



Radical leaves rather many, oblong, or oblong-obovate, the margins either 

 crisped or the whole blade cut into many fern-like curled and crisped divisions ; 

 stem-leaves toothed or cut, all petioled, usually very glaucous, as well, as the 

 stem ; flowers small, yellow ; pods much smaller than in the preceding three 

 species, with a gradual slender beak. 



The Sinapis Japonica of Thunberg is undoubtedly the plant which we are 

 considering. There is some question, however, if the Brassica Japotiica of 



