548 PHARMACEUTICAL BOTANY 
contain gum-resin or oil. Leaves alternate, exstipulate and 
compound (trifoliate in Commiphora Myrrha). Flowers small, 
regular and hermaphrodite, 
arranged in racemes or pan- 
icles. Fruit a drupe. 
OrrFicIAL DruG Part Usep 
Myrrha Gum resin 
BorAnicAL ORIGIN HABITAT 
Commiphora N. E. Africa and 
abyssinica et al.spp. Arabia 
UnorriciAL Druc Part UseED 
Olibanum Gum resin 
BoTANICAL ORIGIN HABITAT 
Boswellia carterii East Africa and 
Arabia 
MELIACEZ OR MAHOGANY 
Famity.—Iropical trees or 
shrubs with wood often hard, 
colored and odoriferous. 
Leaves alternate, exstipulate, 
pinnately-compound, rarely 
simple and entire. Inflores- 
cence a terminal or axillary 
raceme. Flowers hermaphro- 
dite or rarely polygamo-dice- 
cious, regular; sepals five to 
four, small; petals usually five 
to four, hypogynous; stamens 
generally ten to eight, rarely 
five, very rarely twenty to sixteen, inserted outside the base of the 
hypogynous disc; filaments united into a tube; carpels usually 
five hate three; style simple; ovary free, usually five- to three-celled. 
Fruit a drupe (Melia), berry (Vavaea), or capsule (Cedrela). Seeds 
exalbuminous or with fleshy albumen. 
Fic. 416.—Commiphora myrrha—Branch. 
(Sayre.) 
UnorFIcIAL Druc Part Usep BoTANICAL ORIGIN HABITAT 
Aen Bark of root Melia Azedarach Asia 
illana Bark Guarea Rusbyi Bolivia 
PoLYGALACE® or Mirkwort Famity.—Herbs or shrubs 
with upright, herbaceous to woody stems often branching pro- 
