96 Cole Crops 



sidered to oe oi che same species, B comvpestris var. Napus, 

 Babington (B. Napus, Linn.). 



4. B. Rapa, Linn. Sp. PI. 666. (B. campestris var. Bapa, 

 Hartin. Handb. Skand. Fl. ed. 6, 110. 1854.) Turnip. Plant 

 green, slightly or not at all glaucous, the foliage usually rough-, 

 ish to the hand : root tuber flattened or globular, sometimes 

 oblong white- or yellow-fleshed, the top part often purple, the 

 neck short: root leaves not thick, mostly long-pinnatifid, the 

 lobes in several irregular uneven pairs and successively smaller 

 downward, but sometimes tapering gradually from the broad 

 blade to a narrowly winged petiole and without large lobes; 

 leaves usually sparsely setose-hairy on the ribs beneath, at 

 least in the young expanding foliage; upper stem leaves obo- 

 vate to oblong to lanceolate in outline the margins of the 

 larger ones irregular and notched, often narrowed toward the 

 base, clasping: flowers small (i^ to % in. long), bright yellow, 

 the clusters short in anthesis : pods about 1% in. long exclu- 

 sive of the slender conical beak. — Nativity undetermined. 

 (Eapum is a Latin word for turnip.) 



5. B. pekinensls, Rupr. Fl. Ingr. i, 96. 1860. (Binapis 

 pekinensis, Lour. Fl. Cochin, 400. 1790. B. Pe-tsai, Bailey, 

 Bull. 67 Cornell Exp. Sta. 190. 1894.) Pe-tsai. An erect 

 green soft-foliaged annual of quick growth: radical leaves 

 many, large, veiny and crinkled, 12 to 20 in. long, oblong or 

 broadly obovate in outline, the top broad and rounded, taper- 

 ing below and vanishing to the lower end of the very broad 

 whitened midrib, the upper margins wavy, the lower margins 

 jagged-notched ; stem leaves multiform, sometimes broad and 

 clasping, sometimes merely sessile, sometimes petioled, in shape 

 various, the margins notched or crinkled or in the upper leaves 

 entire : flowers light yellow, about % in. long, the cluster 

 short in anthesis : pod stout, 1 to 2 in. long exclusive of the 

 short cone-shaped blunt beak. — Probably native in China. 

 See page 88. 



6. B. rugosa, Bailey, Bull. 67 Cornell Exp. Sta. 191. 1894; 

 Prain, Bull. 4, Dept. Land Rec. and Agr., Bengal, 11. 1898. 



