kyanophilous 
laevigate 
kyanoph‘ilous (xtavos, blue; giréw, I 
love), used of any tissue which 
readily absorbs blue staining ; 
Ky’anophyll (dvAdov, a leaf), nearly 
pure chlorophyll freed from its 
associated yellow pigment, xantho- 
phyll (Wiesner); it is bluish-green 
in colour. 
La’bel (abellum, a little lip), (1) Grew’s 
term for the pinnule or ultimate 
segment of a Fern-frond; (2) LaBeL- 
LuM ; Label’lum ; (1) the third petal 
of Orchids, usually enlarged, andi by 
torsion of the ovary become anterior, 
from its normal posterior position ; 
(2) a similar petal in other flowers. 
la/biate, labia’tus (Lat., lipped) lipped, 
usually bilabiate; labiatiflor’ous, 
-rus, used of certain Compositae 
with bilabiate corollas to their 
florets ; la’biose, dabio’sus, applied 
to a polypetalous corolla seemingly 
two-lipped; La’bium, the lower 
lip of a Labiate flower. 
labyrinthifor’mis (/abyrinthus, astruc- 
ture with winding passages; forma, 
shape), marked by sinuous lines, 
cf., DAEDALEUS, 
Lac (Ital., /acca, a varnish), a resinous 
exudation from various tropical 
ine occurring in commerce in 
ifferent forms; Lac’case, the en- 
zyme which produces Lacquer, 
from fluid lac; lac’cate, as though 
varnished ; Lac’cine, a substance 
found in lac, insoluble in water, 
alcohol, or ether. 
lac’erate, lac’erus (Jacer, mangled); 
lacera’ted, lacera’tus; torn, or ir- 
regularly cleft. 
Lach’rima (Lat., a tear), a drop of gum 
or resin exuded from a tree; also 
spelled Lach’ryma and Lacrima; 
lach’ryrimiform,  lachrimiform’is 
(forma, shape), tear-shaped ; some- 
times but less correctly spelled 
lach’rymaeform, etc. 
Lacin’ia (Lat., the flap of a garment), 
aslash or slender he Lacinia’tion, 
fission ; lacin’iate, lacinia’tus, 
slashed, cut into narrow lobes; 
lacin’iform (forma, shape), fringe- 
like (Crozier) ; Lacin’ule, (1) a dim- 
inutive lacinia or lobe; (2) the 
incurved point of the petal inmany 
Umbelliferae ; lacin’ulate, lacin’u- 
lose, finely laciniate, possessing 
lacinulae. 
Lacquer, a Japanese varnish; cf, 
Lac and Lacoasz. 
Lac’tase (/ac, milk), Beijerink’s name 
for an enzyme which inverts sugar, 
but is distinct from Invertase ; 
Lac'teals, Lac’tifer (fero, I bear), 
Lac’tents, Grew’s names for latici- 
ferous ducts ; lac’tens (Lat.) milky, 
white as milk ; lactes’cent, lactes’- 
cens, yielding milky juice; lactic’olor 
(color, colour) milk-white; lacti- 
f'erous,Grew’s word for laticiferous; 
Lac’tose, milk-sugar; the sweet prin- 
ciple of milk, and stated to occur in 
the fruit of Achras Sapota, Linn. 
Lactuca'rium, the dried juice of the 
lettuce, Lactuca sativa, Linn., con- 
taining an active principle, Lac’tu- 
cine. 
Lacu’na (Lat., a hole or cavity), (1) an 
air-space in the midst of tissue; 
(2) a depression on the thallus of 
a Lichen; lacunar, pertaining to 
or arising from lacunae; ~ Tis’sue, 
thin-walled cells, forming irregular 
trabeculae radially traversing the 
intercellular cavity of the stem of 
Selaginella ; it may be regarded as 
the equivalent of the Bundle-Sheath 
of most other vascular Cryptogams; 
lacu’nose, /acuno’sus, (1) when the 
surface is covered with depressions ; 
(2) perforated with holes ; lacu’no- 
rimo’sus, marked with irregular 
cracks and excavations; lacu’no- 
ru’gose, ~ -rugosus, having irregular 
wrinkles, as the stone of the peach. 
lacus’tral (/acus, a pond or lake), H.C. 
Watson's term for plants which are 
usually floating in water or im- 
mersed ; lacus’trine, Jacus’tris, be- 
longing to, or inhabiting lakes or 
ponds; the form lacus'ter has been 
introduced recently. 
laev'igate, laeviga’tus  (levigatus, 
smooth, slippery), smooth, as if 
polished. 
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