330 The Ohio Journal of Science [Vol. XVII, No. 8, 



3. Brassica campestris L. Common Turnip. Stem 1-3 ft. 

 high, glaucous, branching; lower leaves lyrate, petioled, pubes- 

 cent; upper leaves lanceolate, sessile, glabrous; flowers large, 

 pale yellow; pods long, spreading; root fleshy; biennial. 



Introduced from Europe and persisting in cultivated ground. 

 Auglaize, Franklin, Miami, Wayne. 



4. Brassica napus L. Rape. Similar to B. campestris, but 



entirely glabrous. Racemes dense. 



Introduced from Europe. Franklin County. 



5. Brassica oleracea L. Cabbage. Stem thick and hard. 

 Leaves large, fleshy, strongly-veined, forming a head the first 

 year. 



A biennial, occasionally spontaneous. No specimens. 



32. Diplotaxis DC. Rocket. 



Annual or perennial herbs, similar to the Brassicas, with 

 pinnatifid or lobed leaves, and rather large yellow flowers in 

 loose terminal racemes. Siliques elongated, flat. Seeds wing- 

 less, in 2 rows in each cavity. 



1. Diplotaxis tenuifolia (L.) DC. Wall Rocket. Stem 

 1-4 ft. high, leafy, branched, glabrous and slightly glaucous; 

 leaves 3-6 in. long, thin, deeply pinnatifid, divisions narrow; 

 pods 1-1§ in. long, erect on slender pedicels. 



A perennial in waste places, adventive from Europe. Cuya- 

 hoga County. 



33. Raphanus (Tourn.) L. Radish. 



Annual or biennial erect herbs with lyrate leaves and showy 

 flowers in racemes. Siliques oblong, acuminate, coriaceous, 

 spongy, indehiscent. Seeds spherical. 



1. Flowers yellow, turning purple or white; pods moniliform. R. raphanistnim. 

 1. Flowers pale purple; pods short and thick. R.sativus. 



1. Raphanus raphanistrum L. Wild Radish. Stem \-2\ 

 ft. high, much branched, slightly pubescent; lower leaves 

 rough, 4-8 in. long, lyrate with a large terminal lobe and smaller 

 lobes, all dentate; upper leaves smaller, oblong; flowers ^-f in. 

 broad, purple veined; pods 1-1^ in. long, constricted somewhat 

 like those of Sinapsis arvensis; root slender. 



A troublesome weed in fields from Europe. Lake County. 



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