462 REPORT OV NEW JERSEY STATE MUSEUM. 



Middle District. — Kinkora, Gloucester. 

 Ca(>c May.— On Delaware Bay (NB). 



Famlily CRUCIFER.^. Mustard, etc. 



Key to the Species. 



a. Petals yellow. 



b. Fruit short, not more than three times as long as broad. 



c. Pods obovoid, leaves lanceolate. [Camelino sativaY 



cc. Pods ovoid or globose, leaves pinnately parted. 



d. Plant glabrous. Radicula palustris, p. 464 



dd. Plant hirsute. R. hispida, p. 463 



bb. Fruit much more than three times as long as broad, 



c. Petals 7-15 mm. long. [Brassica nigra]* 



cc. Petals smaller. 



d. Pods 7-9 cm. long. [Sisymbrium oMcinaleY 



dd. Pods 2-5 cm. long. [Barbarea barbarea]* 



aa. Petals white. 



b. Pods divided into two cells transversely, fleshy sea coast plants. 



Cakile edentula, p. 463 

 bb. Pods divided into two cells longitudinally ; short, rarely three times 

 as long as wide. 

 c. Pods compressed at right angles to the plane of the partition, 

 making it very narrow. 



d. Pods cordate triangular, wedge-shaped at the base, hairs or 

 some of them branched. [Bursa bursa-pastoris]* 



dd. Pods oval or nearly circular. Lepidium virginicum, p. 465 

 cc. Pods compressed parallel with the plane of the partition, leav- 

 ing it broad. 

 d. Petals 2 cleft. [Draba vernaY 



dd. Petals entire. Draba caroliniana, p. 465 



hbb. Pods divided into two cells longitudinally; four to many times as 

 long as wide. » 



c. Hairs simple or none. 



d. Leaves palmate. Dentaria laciniata, p. 465 



dd. Leaves oblong or cordate. 



e. Tuberous roots. Cardamine bulbosa, p. 464 



ee. Fibrous roots. Cardamine rotundifolia, p. 465 



We have but few native Cruciferae in southern New Jersey, but a number 

 of our common weeds belong to this family, of which the following are 

 of most frequent occurrence: 



^ False Flax, occasional in fields. 



' Black Mustard, common in waste ground. 



* Hedge Mustard, common about houses, roadsides, etc. 



* Winter Cress, fields, meadows, etc., common. 



* Shepherd's Purse, a common field and garden weed. 



* Whitlow Grass, one of the earliest plants to appear in flower, very 

 common in sandy fields. 



