202 SYSTEMATIC BOTANY. 



14. Raphanus. Calyx erect. Petals obovate. Silique terete, 

 valveless, many-celled. Seeds sub-globose, in a single series. (T) 



i. R. RAPHANISTRUM (Wild Radish}. Stem erect, branching, terete; 

 leaves lyrate ; flowers bright yellow, large, racemose ; petals turning white, 

 purple, or blue ; silique round, jointed, i-celled when mature. Road-sides 

 and fields. July. 



Order IX. CAPPARIDACE^E (Caper Family). 



Herbs ; or, in the Tropics, shrubs or trees. Leaves alternate, 

 without true stipules. Flowers solitary, or in racemes. Sepals 4. 

 Petals 4, cruciform, unguiculate, unequal. Stamens usually some 

 multiple of 4. Ovary of 2 united carpels. Styles united into one. 

 Fruit a I -celled pod, without any partition ; or baccate. Seeds 

 usually many, reniform. Embryo curved, with leafy cotyledons. 



An order much resembling Cruciferas, but usually distinguished 

 by the number of its stamens and the structure of its fruit. The 

 plants are often more acrid than the Cruciferse ; and their roots, 

 bark, and herbage are nauseously bitter, and sometimes poisonous. 



( Ovary and pod stalked Cleome. 

 CAPPARIDACE^ 



( Ovary and pod sessile Polanisia. 



I. Cleome. Calyx 4-cleft. Petals 4. Torus minute or nearly 

 round. Stamens 6, rarely 4. Pod subsessile or stipitate. 



1. C. PUNGENS (Spicterwort}. Glandular-pubescent ; stem smooth ; peti- 

 oles prickly ; leaves digitate, 5-9, long-petiolate ; leaflets lanceolate, slightly 

 toothed ; flowers purple, racemed ; petals on filiform claws ; stamens 6, twice 

 as long as the petals. A common garden flower, 3 to 4 feet high. July- 

 August. 



2. Polanisia. Petals 4, with claws ; stamens many, unequal. 

 Receptacle short ; pod linear. Fetid annuals. 



i. P. GRAVEOLENS. Leaves of 3 leaflets. Flowers small, styles short. 

 Gravelly shores. June-August. 



Order X. RESEDACE.E (Mignonette Family). 



Herbs, with a watery juice. Leaves alternate, without stipules, 

 but often with 2 glands at base. Flowers small, fragrant, in ter- 

 minal racemes. Sepals 4-7, united at base. Petals 2-7, usually 

 unequal and lacerated, with nectariferous claws. Stamens 3-40, 

 on the fleshy glandular disk. Ovary i-celled, 3-6-lobed at summit, 

 usually many-seeded, with 3-6 parietal placentas, opening before 

 maturity. Seeds reniform, with no albumen. 



