THE DICOTYLEDONS 583 
-OrFiciAL Druc PART Usep BoTANICAL ORIGIN HABITAT 
Styrax Benzoin East Indies 
Styrax tonkinensis Siam 
or other species of 
Styrax 
Benzoinum Balsamic resin 
ORDER GENTIANALES 
OLEACEa OR Olive Famity.—Shrubs, as Lilacs (Springa), 
Golden Bell (Forsythia) or trees (as the Ash (Fraxinus), Olive 
(Olea), etc.) with stems possessing close white wood, and slightly 
swollen or enlarged nodes. Leaves opposite, decussate, simple, 
rarely pinnately-compound (Ash). Inflorescence dichasial or 
scorpioid cymes but tending constantly toward condensation and, 
so in the Lilac, the inflorescence becomes a clustered raceme of 
cymes (thyrsus). Flowers regular, pentamerous or tetramerous; 
sepals small, green, rarely petaloid, synsepalous; petals syn- 
petalous, elongated into a narrow tube, expanding above into a 
stellate limb; stamens very rarely five, rarely four to three, nearly 
always two, epipetalous and high set on corolla tube; pistil 
bicarpellate, rarely of three to four carpels; ovary two-celled with 
two to one pendulous ovules in each cavity. Fruit either a 
capsule (Lilac), drupe (Olive), berry (Privet) or a winged inde- 
hiscent akene (Ash). Seeds with moderate to scanty albumen, 
becoming occasionally exalbuminous. 
OrriciAL Druc Part Usep . BoTANICAL ORIGIN HABITAT 
Manna Dried exudation Fraxinus Ornus Southern Europe 
Oleum Olivze Fixed oil Olea europza Southern Europe, 
s Algeria, Asia 
Chionanthus Bark of root Chionanthus virginica Southern United 
States 
UnorrictaL DruaG 
Fraxinus Bark Fraxinus americana Northern United 
States and Canada 
LoGANIACE OR LoGANIA Famity.—Herbs (Spigelia or Pink 
Root, etc.), woody vines. (Gelsemium or Yellow Jasmine, etc.) or 
trees (Strychnos Nux Vomica, etc.) with a bitter juice usually con- 
taining alkaloids. Stem, rarely herbaceous, usually woody, 
often long climbing and rope-like (Gelsemium), usually with a 
bicollateral bundle system. Leaves opposite, stipulate or 
exstipulate. Inflorescence racemose or cymose (Spigelia) (scor- 
