50 Cruciferae 



Subfamily 2. Fumarioideae . Flowers mostly 

 transversely zygomorphic. One of two outer petals 

 gibbous or spurred. Stamens opposite them, each 

 stamen divided from the base into three. 



Ovules numerous, fruit a 2-valved capsule. 



Corydalis. 



Ovules 2, fruit i -seeded, indehiscent. Fumaria. 



Suborder 2. Capparidineae. Floivers hetero- 

 chlamydeous. Sepals 4 or more. 



Fam. 2. Cruciferae. Annual or perennial herbs 

 usually with unicellular simple or branched hairs. 

 Leaves spiral, exstipulate. Flowers in bractless 

 racemes, hermaphrodite, actinomorphic. K 2 + 2. C 4. 

 A 2 (short) + 4 (long). G (2). Placentation parietal, but 

 ovary is 2-loc on account of growth of septum {rephnn) 

 from placentae. Stigmas 2 on short style above pla- 

 centae. Fruit mostly capsular. Eiidosperm absent. 



Position of cotyledons and radicle as follows : 



O 1 1 notorhizal (radicle incumbent). 



o = pleurorhizal (radicle accumbent). 



o > > orthoplocous (cotyledons conduplicate). 



The following arrangement of the British Cruciferae 

 is according to de Candolle and is adapted from 

 Hooker's Students Flora, ed. 3. See also Syllabus, ed. 7, 

 p. 1 98, where another arrangement is given. 



A. Siliquosae. Pods usually much longer than 

 broad, dehiscent throughout their whole length, not 

 compressed at right angles to septum. 



Tribe i. Arabideae (Siliquosae pleurorhizae). Seeds 

 I -seriate (2-seriate in Arabis and Nasturtium). Coty- 



