456 A COMPENDIUM OF 
tubers, whose flowers are of all colors, fan- 
tastic in shape, and much prized. 
Orchidaceous, or’-ki-da’-shus, also Orchide- 
ous—appertaining to the Orchis family. 
Orcin—or’-sin (Fr. orcine). A peculiar red col- 
oring found in the orchill, cudbear, litmus, 
and many other species of lichen or rock and 
tree mosses, 
Organography—or’-gan-og’-ra-fi (Gr. organon, 
an instrument, and grapho, I write). A scien- 
tific writing or description of the internal 
structure of plant life. 
Orris—or’-ris (Gr. iris, a rainbow). A corrup- 
tion of the word iris, the many colored flower 
of the flag; the dried root of the much es- 
teemed Florentine orris root of the stores. 
Orthospermz—plural, or’-tho-sper’-me(Gr. or- 
thos, straight, and sperma, a seed). Seeds 
having the albumen flat on the inner face; 
without curvature, 
Orthotropous—or-thot’-ro-pus (Greek, orthos, 
straight, and ¢ropos, direction; from frepo, I 
turn). The embryo of the seed lying straight 
towards the hilum, as the bean; usually ap- 
plied to the ovule with the opening opposite 
to the eye of the hilum. 
Oval—o’-val (Fr. ovale; Ital. ovale, shaped like 
an egg, from the Lat. ovum, an egg). Ap- 
plied to leaves and seeds when they resemble 
an egg in shape. 
Ovate—(Lat. ovatus, shaped like an egg). Like 
an egg in shape; ovate lanceolate; partaking 
of the egg and spear head in form. 
Ovate-oblong—Shaped like an egg, but drawn 
out in length, 
