BOTANIC MATERIA MEDICA, 421 
Collenchyma—kol’-len-ki’-ma (Gr. £ollo, glue, 
and exgchuma, a tissue). The substance be- 
tween the uniting cells. 
Collodion—(Gr. ollu, glue, and ezdos, form). 
A solution of gun cotton in ether. 
Comose—ko’-moz (Lat. coma, a hair), Fur- 
nished with hairs pubescent, as in the seeds 
of the willow. 
Contuse—kon’-tuz (Lat. contusum, a bruise, 
from con and ftusus, beaten). In medicine, 
the pounding of an herb or root in a mortar, 
Convection—(Lat. convectum, to convey). The 
act of conveying or transmitting heat through 
fluids. 
Convolute—kon-vo’-lot, also Convoluted (Lat. 
con, and volutus, together, curled). Rolled, 
curled or winding up; twisted. 
Cordate—kor’-dat (Lat. cor, heart). Cordated, 
leaves of plants which resemble the heart in 
shape ; heart-shaped. 
Coriaceous—ko’-ri-a-shus (Lat. corium,; Gr. 
chorion, skin, hide). Leaves of a leathery 
texture. Example: laurel, magnolia leaves. 
Corolla—ko’rol-la (Lat. corol/a, a small wreath 
or crown). The crown of the flower, usually 
the colored portion. 
Corona—ko-ro’-na (Lat. corona, acrown). The 
circumference or margin of a compound flow- 
er; the margin of the corolla. 
Corrugated—kor'’ -roo-gat-ed (Lat. corrugatus, 
to make full of wrinkles; from con and ruga, 
to wrinkle). When the leaf or petal is folded 
or wrinkled; furrowed. 
Cortex—kor’-teks (Lat. cortex, the bark of a 
