IsiDiUM (Gr. isis, a genus o£ corals, eideos, like), a coral-like outgrowth on
the lichen thallus, rounded at the top, resembling the old genus
Isidium.
J ointed, septate.
L acerate (Lat. lacer, mangled), to rn or irreg u la rly cleft.
L acinia (Lat. lacinia, a fragment of cloth), a slender thalline lobe.
L aciniate, th a llu s o ut in to n a rrow lobes.
L acuna, L acunose (Lat. lacuna, a hollow cavity), having depressions or
holes.
L ev ig a t e (Lat.), smooth as if polished.
L ageniform (Lat. lagena, a flask), shaped like a Florence flask.
L ateral (Lat. latua, a side), fixed on or near the side of thallus or
apothecium.
L ecanorine (Lecanora, a genus of lichens), applied to ap o th e cia w ith a
th a llin e m a rg in as in th e genus Lecanora.
L e c id e in e (Lecidea, a genus of lichens), applied to ap o th e cia wh ich are
c arbonaceous, u su ally dark-ooloured a n d w ith o u t a th a llin e m a rg in , as
in Lecidea.
L enticular, L entiform (Lat. lens, a lentil), lentil- or lens-like, doubly
convex.
L bprarioid (Gr. lepra, leprosy), w ith a w h itish m e a ly or scurfy surface
like th e old form genus Lepraria—L e pro se .
L bptogioid, similar to the genus Leptogium.
L eptogonidia (Gr. leptos, delicate, gone, offspring), algal cells of small
size, cf. gonidimia.
L ignicolb, L ignicolous (L at. lignum, wood, colo, to in h a b it), liv in g on
wood or trees.
L ibblla (Lat. lira, a ridge between two furrows), a long narrow apothecium
with a ridge down the middle—L ieellasfohm.
L iv id (Lat.), of a leaden colour, pale and clouded.
L obate (Lat. lohos, the lower part of the ear), thallus divided into lobes—
L obulate.
L oculus, L oculab (Lat., a little place), a compartment of a septate spore.
L urid (Lat. luridus, sallow, wan), dull, or dingy in colour.
L utbous (L at. luteus, gold-coloured), a fu ll yellow-colour.
Macro-, Greek prefix, signifying large.
Macrophylline (Gr. makros, long, pliullon, a leaf), having large lobes.
Maculae (Lat. macula, a spot), applied to a thallus occurring in spots.
Marginal, s itu a te on th e edge or margin.
Marginate, hav in g a m a rg in , te rm applied to apothecium.
Mastoid (Gr. mastos, a breast, eidos, like), nipple-like.
MAZiEDiUM, fru o tiiic atio n of Calicei: spores free from th e asci fo rm in g a
powdery mass in a lm o st closed heads.
Medulla (Lat. pith), the loose hyphal layer in the interior of the thallus.
Membranaceous, th in , like a membrane.
Micro-, Greek prefix, signifying small.
Miceophyllinb (Gr. mikros, small, phullon, a leaf), composed of minute
lobes or scales.
Miniate (Lat. miniatus), coloured like red lead or cinnabar.
Moniliform (Lat. monile, a necklace), in rows, like a string of beads.
Mono-, Greek prefix, signifying one.
Moncboious (Gr. monos, one, oikos, a house), with male and female
organs on the same plant.
Monophyllous (Gr. monos, one, phullon, a leaf), one-leaved.
Monotypio (Gr. monos, one, tupos, a type), having only one exponent, as a
genus with one species.
Mucus, Mucosb (Lat. mucus, nasal secretion), mucilaginous.
Multi-, L a tin prefix, signifying many.
Mu l tifid (Lat.), cleft into many lobes or segments.
Murali-d ivid ed, Muriform (Lat. murus, a wall), term applied to multi-
cellular spores that are divided like the masonry of a wall.
Muscicolb (Lat. muscus, moss, colo, to inhabit), living on mosses.
Mycelium (Gr. mukes, a mushroom), an aggregate of fungal hyphæ.
Myriospobbd (Gr. myrios, many, spora, a seed), with many spores.
N odule (Lat, nodus, a knot), a small knot or rounded body.
N ostooinb (Nostoc, a genus of Cyanophyceæ), similar to Nostoc.
N uclear (Lat. a kernel), sometimes signifying closed perithecia.
N ucleolate, applied to spores that have conspicuous oil-drops, cf. guttulate.
O b -, Latin prefix, signifying iu an inverse direction, as obconical, obovate.
Oblong, longer than broad, with nearly parallel sides.
Obsolete (Lat. obsoletus, worn out), wanting or rudimentary.
Ochroleucous (Gr. ochra, yellow earth, leukos, white), yellowish-white.
Oleoso-loculab (Lat. oleum, oil, loculus, a little compartment), applied
to spores with cells like drops of oil.
Orbicular (Lat., circular), a fiat body with a circular outline.
Osseods (Lat.), bone-like.
Ostiole (Lat. ostiolum, a little door), the opening in the perithecium
through which the spores escape.
Oval (Lat. ovum, an egg), shaped like an egg—Ovate, Oviform, Ovoid.
-Palmate (Lat. palma, the palm of the hand), lobed in a finger-like
manner.
P annifobm (Lat. pannus, a cloth), having the appearance of felt or
woollen cloth—P annosb.
P apilla (Lat., a nipple), a small superfioial protuberance.
P apulose {Lat. papula, a pimple), beset with pimples or pustules.
P aeaphysis (Gr. para, beside, phusis, growth), a sterile filament in the
hymenium growing alongside the asci.
P abathecium (Gr. para, from beside, theke, a case), the layer immediately
surrounding the theoium, continuation of the hypothecium.
P arietal (Lat. paries, a wall), belonging to a wall.
P abmeleine, resembling the genus Parmelia, a term applied to shieldlike
apothecia—Parmblioid.
P atbllulate (Lat. patella, a small dish), applied to sessile marginate
apothecia, resembling a little dish.
P atent (Lat. patens, open), spreading, as of branches.
P atulous (Lat.), spreading.
P auci-, Latin prefix signifying few.
P edicellate {Lat. pecUculus, a small foot), borne on a stalk.
-Peltate (Lat. pelta, a small shield), orbicular and horizontal, in the form
of a shield or target—P eltipobm.
P endulous (Lat.), hanging.
P e r i -, Greek prefix signifying about, or outer covering, as perigonidium.
P eridium (Gr. peridion, a little pouch), the covering of the upper part of
a closed pyrenocarp, sometimes used for the whole fructification.
P er iph e ra l (Gr. periphereia, the circumference of a circle), surrounding.
P eriphy se s (Gr. peri, about, phusis, growth), filaments rising near the
mouth of the perithecium.
P erithecium (Gr. peri, about, theke, a case), a roundish fructification
entirely enclosed or with a minute opening at the apex.
P brtusaeioid, like the genus Pertusaria, with the apothecia occurring in
verrucæ, g.v.
P ervious (Lat. pcrvius, passable), referring to scyphi that are open or
perforate at the base.
P innate (Lat. pinna, a feather), lobes arranged on each side of a common
axis.