THE: DICOTYLEDONS 587 
OrriciAL Druc Part Usep BorANICAL ORIGIN HABITAT 
Gentiana Rhizome and Gentiana lutea Europe 
root 
UNOFFICIAL 
Druc 
Chirata Entire plant Swertia Chirayita Northern India 
Centaurium Flowering plant Erythraa Centaurium Europe 
Menyanthes Leaves Menyanthes trifoliata | Europe and Asia 
Sabbatia Herb Sabbatia angularis Eastern United States 
and Canada 
Fic. 444. 
Fic. 444.—Menyanthes trifoliata, the buckbean or bogbean, whose leaves are 
employed as a simple bitter. This perennial herb occurs in bogs of Europe, Asia 
and North America. Note the long petioled, trifoliate leaves whose bases sheathe 
the rhizome and the long peduncle bearing a raceme of tubular flowers which are 
pinkish-purple or white. (Reproduced from U. S. Dept. Agric. Misc. Pub. 77.) 
Fic. 445.—Apocynum cannabinum or Canadian hemp, a perennial herb whose 
rhizome and roots contain cardiac stimulant glucosides. Note the opposite, ovate- 
lanceolate leaves, the central terminal cyme of greenish white flowers and the fruit 
of paired follicles (on right). (Reproduced from U.S. Dept. Agric. Misc. Publ. G73) 
APOCYNACE OR Doc Bane Famity.—Herbs, rarely shrubs, 
not infrequently clambering or climbing in habit (Adlamanda). 
Stem and branches show bicollateral bundles. Stem, leaves and 
flowers have latex tubes which ramify through the cortex and 
mesophyll tissues. Leaves alternate, opposite or verticillate, 
