Merogamy 
(SUPPLEMENT) 
metatrophic 
but only its cytoplasm or nucleus 
(Dangeard): Merog’ony (yor), off- 
spring), fertilization of the oogonia 
of  Cystoseira, without nuclei 
(Winkler); Meroplank’ton (+ 
PLANKTON), that found only at 
certain seasons of the year (Forel); 
mesochthonoph'ilus (Adv, the 
ground, ¢Aéw, I love), dwelling 
In midlands; Mesochthonophy’ta 
(gurdv, a plant) midland p!ants ; 
Mesochthonophy’tia, midland plant 
formations (Clements); mesoclad’- 
ous, -dus («Addos, a branch), possess- 
ing branches of medium length ; 
(Russow) ; Mes’ocyst (xvoris, a bag), 
the definite central nucleus of the 
embryo-sac with which the second 
antherozoid fuses to form a Tro- 
PHIME (Van Tieghem); Mes’odes, 
pl., the two medium cells of the 
embryo-sac of Angiosperms which 
contain the polar nuclei (Dangeard ; 
Mesog’amy (yduos, marriage), a 
process of fertilization in cer- 
tain Urticaceae, intermediate be- 
tween Basigamy and Acrogamy 
(Pirotta and Longo), adj. meso- 
gam‘ic; Mesomel'itae, pl. (mel, 
honey), Huxley’s term for a series 
of Gentianeae which have honey- 
glands in the central portion of 
the flower; cf. PERIMELITAE; 
Mesometatrop’ic (+ METATROPIC), 
when the ‘first ovary receives 
pollen from an anther associated 
with a second ovary, but the 
second ovary receiving pollen from 
the anthers of the first plant not 
associated with the first ovary ” 
(K. Pearson) ; Mesomyce’tes (uix7s, 
a mushroom), a group intermediate 
between Phycomycetes and the 
higher Fungi (Warming); Meso- 
pet’alum (méradov, « flower-leaf). 
Pfitzer’s term for the LaseLLum of 
Orchids; mesoph’‘ilus (¢.Aéw, I love), 
dwelling in moist lands; Meso- 
phy'ta (gurdv, a plant); (2) moist 
land plants; Mesophy’tia, moist land 
plant formations (Clements) ; mes- 
othermoph’ilus (piAéw, I love), 
dwelling in the temperate zone; 
338 
Mesothermophy’ta (urdv, a plant) 
= MEsoTHERM ; Mesothermophy tia 
temperate plant formation (Cle- 
ments); mesophyl’lous, -lus 
(¢tdXov), w leaf), having leaves of 
median length or average size for 
the genus (Russow); Mes’ospore 
(+ Spore), the middle portion of 
the spore of Jsoétes (Fitting) ; 
Mesosporin'ium, the middle coat of 
pollen in Angiosperms (Fitting). 
Mess’mates, used by A. C. Jones for 
Sympronts. 
Mes‘tome-bun’dle, a fibro- vascular 
bundle; ~ Sheath, bundle-sheath. 
metabio’tic, relating to MErasiosis ; 
Metab’olite, a product of metabol- 
ism; Metachlamyd’eae (xAaps, a 
cloak), Engler’s term for G:amMoPET- 
ALAE; Age of~ MacMillan’s term 
for the present age, subsequent to 
the Glacial Epoch ; Metachlorophyl’ 
lin (+ CHOROPHYLLIN), a class of 
chlorophyll derivatives, the crys- 
tallizable chlorophyll (Tsvett) ; 
Metader’ma (dépua, a skin), a 
modified tissue which takes the 
place of cork in some structures, 
but does not possess the 
properties of cork (A. Meyer); 
Metag’yny (yur, a woman), 
with male flowers sexually mature 
before female (Loew); protandry ; 
Metanaphy’tosis (+ ANAPHYTOSIS), 
the formation of the floral en- 
velopes ; Metan’dry (dvijp, dvipds, a 
man), the female flowers ready 
before the male ; protogynous ; 
Metaphyll’a, pl. (gvAdov, a leaf), 
the mature leaf, as opposed to the 
juvenile form (Goebel) ; Metanthe’- 
sis (avOyo.s, flowering), retarded 
floral development, as opposed to 
PROANTHESIS (Wittrock); meta- 
plast’ic (dacrds, moulded), formed 
of METAPLASM ; metatop’ic (re70s, 
a place), refers to imbricate bud- 
covering which has departed from 
the course of the normal genetic 
spiral, by secondary development 
(Pax) ; metatroph’ic (rpoph, food), 
applied to bacteria restricted to 
substances fabricated by higher 
