BOTANIC MATERIA MEDICA. 485 
tle made of animal hide). A thin skinned one- 
seeded fruit. 
Utriculus—u-trik’-u-lus (Lat. wtriculus, a small 
skin or leather bottle). The covering like a 
bladder filled with air found in many water 
plants. 
Valerian—va-le’-ri-an(Lat. va/ere, to be strong, 
to be in health). A medicinal plant of pecu- 
liar odor, the valerian officinalis. 
Valve—valv (Lat. valve, folding doors, from 
volvo, turn round or about). Any segment 
or piece into which a fruit or pericarp sep- 
arates. 
Valvate—val’-vat (Lat.). Opening by valves. 
Vanilla—va-nil’-la (Span. vaznzl/a, a small pod 
or husk, from vazwa, a sheath or scabbard, 
from the fact that the pod bears some resem- 
blance to the sheath of a knife), A native 
of tropical America, and a plant well known 
for its fruit, which is used as a flavoring, etc. 
Vascular—vas’-ku-lar (Lat. vasculum, a small 
vessel, from vas, a vessel, and ¢exere, to 
weave). The woody tissue of plants; the ar- 
teries and veins. 
Vascular System—(Lat. vasculum, and Gr. 
sustema, many things put together, an assem- 
blage of things), In botany the tissue of 
plants. ; 
Vasiform—vaz’-i-fawm (Lat. vas, a vessel, and 
forma, shape). Applied to tissue having many 
dotted vessels. 
Venation—ve-na’-shun (Lat. vena, a vein). The 
arrangement of the frame-work or veins in 
the leaves. 
Verbena—ver-be’-na (Lat. verdene, branches 
