530 PHARMACEUTICAL BOTANY 
OrriciAL Druc Part Usep BotanicAL NAME HABITAT 
Oleum Sinapis Volatile oil Flas nigra Europe and Asia 
Volatile Brassica juncea Asia 
Sinapis Nigra Seed (Brassica nigra Europe and Asia 
Brassica juncea Asia 
UnorriciAL Druc 
Semen Rapz Seed Brassica napus Europe and Asia 
Armoracia Root - Cochlearia Armoracia Europe 
Sinapis Alba Seed Sinapis alba Europe and Asia 
Capsella Aerial plant Capsella bursa-pastoris Europe 
OrDER SARRACENIALES 
This order includes several families of plants whose leaves are 
modified for the purpose of catching and digesting insects. 
The principal families are the Sarra- 
P crn cemacee and Nepenthacee both of which 
have their leaves modified as pitchers, 
and the Droseracee@ which includes the 
Fly-Traps and Sundews. (See pp. 
622-638.) 
DROSERACEZ OR SUNDEW FamILy. 
Herbs (Drosera, Dionaea, etc.) rarely 
shrubs (Roridula of South Africa), 
growing in bogs or swamps or purely 
aquatic in habit (Aldrovanda). Leaves, 
either rosettes or more or less scattered 
in alternate fashion over stem, usually 
glandular-hairy or sensitive-hairy and 
insectivorous. Inflorescence a loose 
raceme or cymose umbel. Flowers 
regular, pentamerous; sepals five, 
_ Fic. 400.—Crucifer, Floral aposepalous, green; petals apope- 
siagiendiagl aa pre talous, varying from white to whit- 
(Robbins. ish-pink, pink, scarlet, purple to 
bluish-purple; stamens varying from 
fifteen to five, hypogynous; pistil syncarpous of five to three, 
rarely fewer carpels. Fruit a capsule. Seeds albuminous. 
‘ 
UnorricitaL Druc Parr Usep BoTANICcAL ORIGIN HApiraT 
Drosera : Drosera rotundifolia E 
(Sundew) Entire plant Drosera anglica astern a 
Drosera longifolia ern Hemispheres 
