Microdiode 
Midsummer Growth 
Microdi‘ode, the same botanist’s 
expression for a pollen- grain; 
Microform (forma, shape), used of 
a heteroecious Fungus with tel- 
eutospores only, which germinate 
only after a resting period; 
Microgam’etes (+ Gamerz), the 
smaller and male motile cells 
of Algae; Mi’crogerm (germen, 
offshoot) = Microse; Microgon- 
id’ium (+ GonIpIUM), a small 
gonidium, as compared with others 
produced by the same species; 
Micromelittoph’ilae (uédirra, a bee, 
gréw, I love), applied to those 
flowers whose fertilisation is 
effected by small bees and similar 
insects; the attraction is incom- 
prehensible by human _ sense; 
Microm’eter (ué7pov, a measure), a 
device or apparatus to measure 
minute dimensions; Micromil’li- 
meter, the thousandth part of a 
millimeter, and the unit of micro- 
scopic measurement, denoted by 
the sign «4 ; Micromyioph’ilae (uvia, 
a fly ; pcAéw, I love), flowers which 
are fertilised by small flies which 
are often imprisoned ; adj. micromy- 
ioph'ilous ; microphyl'line (@vAdov, 
a leaf), composed of small leaflets 
or scales; Mi’crophyte (gu7ov, a 
plant), used of bacteria; adj. micro- 
phyt’ic ; Micropuccin’ia, with selen- 
tospores only (Plowright); Mi’cro- 
pyle (mvAn, a gate), the aperture 
in the skin of the seed formerly 
the foramen of the ovule, it 
marks the position of the ra- 
dicle ; adj. micropy’lar ; Microscle’- 
rote (cxAnpds, hard), a sclerotium 
modified by unfavourable vital 
conditions, after a resting period 
it develops into a perithecium 
(Zukal); Mi’crosome, Microso'’ma, 
pl. Microso’mata (cdpua, a body), 
in the plural applied to small 
granules embedded in the proto- 
Jlasm; Microsporan’gium (+ 
Beeesceiei, a sporangium which 
produces microspores ; microspor- 
an’giate Flow’er, male, or staminate 
flower ; Mi'crospore (o7ropa, seed), 
159 
(1) the smaller sized sporein hetero- 
sporous plants, as Selaginella; (2) 
of late years applied to the pollen- 
grain; adj. microspor‘ic, micros’- 
porous ; Microspor’ophyll (gvAdo», 
a leaf), a leaf-like organ bearing 
microsporangia ; microsporophyl’- 
lary Flow’er, a male or staminate 
flower; Mi'crostome (créua, a 
mouth), a small orifice ; Microsty’- 
lospore (c7vAos, a column, czopa, 
seed), stylospores of a small size, as 
in Locularia ; microsty’lous, short- 
styled, as applied to dimorphic 
flowers; Microsym’biont (+ Sym- 
BIONT), the smaller of the two 
associated organisms ; Mi’crotherm 
(0¢pun, heat), used for plants 
characteristic of the arctic alpine 
zone, in England needing protec- 
tion from drought and direct 
sunlight; Mi'crotome (rou), a 
cutting), an instrument for section- 
cutting for microscopical purposes ; 
Microzoogloe’a ({gov, an animal, 
yhowds, a sticky substance), a stage 
of Schizomycetes when they are 
immersed ina gelatinous envelope ; 
Microzoogonid’ium (+ GoNnIDIUM), a 
motile form of microgonidium ; 
Microzo’ospore (copa, seed), a 
motile spore, small in size com- 
pared with others of the same 
species ; Microzo’oid (eldos, resem- 
blance), small motile reproductive 
cells in some unicellular Algae, as 
Sphaerella (Hazen); Mi’crozyme 
(fun, yeast), Béchamp’s name for 
microbes and small ferments. 
mid, intermediate; used by H. C, 
Watson for ~ agrarian, and ~ 
arctic zones of vegetation; ~ Er’ror, 
see DEVIATION. 
mid’dle, central; ~ Lamel’la, the mem- 
brane primary septum between 
any two cells; ~ Lam‘ina, in a 
lignified cell-wall, the portion be- 
tween the ~ LameLLA and inner 
lamina ; ~ Lobe, see Lose, Middle. 
Mid’rib, the principal nerve in a leaf. 
Mid’summer Growth, w second start 
into growth after ceasing ; it does 
not occur in all trees. 
