348 GLOSSARY. 



Metamorphosis : cliange ; a gradual change into something else. 



Metastasis : all the chemical changes after assimilation. 



Micropyle : the opening in the ovule by which the pollen-tube enters. 



Microspore : the smaller of two kinds of spores ; as in some Lycopods. 



Midrib : the lai'ge vein or rib in the middle of the leaf. 



Monadelphoiis stamens : those united by their filaments into one set. 



Moniliform : necklace-shaped ; contracted at intervals. 



Mono (as a prefix) : one or (sometimes) united ; as monopetalous. 



Monoclinous : hermaphrodite. 



Monocotyledon : a plant having seed with but one cotyledon 



Monocotyledonous : having but one cotyledon. 



Monolocular : one-celled ; having one cavity. 



Monoecious: having staminate and pistillate flowers on the same 



plant. 

 Monopodia], hranching : the new branches are lateral, the original 



growing point of the stem not dividing, as in diohotomous 



branching. 

 Monstrosity: a form which deviates greatly and abnormally from 



the usual. 

 Mordant: a substance which unites firmly both with fabrics or 



organic fibres and with dyes, thus fixing the latter. 

 Morphology : that which treats of forms fispecially in a comparative 



sense ; sometimes used in place of metamorphosis. 

 Mother-cell : that cell which gives rise directly to new cells. 

 Mucronate : with an abrupt sharp point. 

 Multi (as a prefix) : many. 



Muscology : the department of botany which treats of Mosses. 

 Mycelium : the vegetative threads or filaments of Fungi. 

 Mycology : that part of botany which treats of Fungi. 



Naked : wanting some usual covering. 



Napiform : shape of a turnip. 



Narcotic: (in small doses) relieving pain and causing sleep; (in 

 large doses) producing stupor. 



Natural classification: that according to affinity, or that which ia 

 based on all the characters. 



Nectar : the honey or sweetish substance secreted by nectaries. 



Nectary : the tissue or organ usually in connection with the flower, 

 which secretes a sweetish substance called nectar. 



Nectariferous : bearing nectar. 



Nerve : veins of leaves especially when parallel. 



Netted-veined : the veins anastomosing so as to form a net-work. 



Node, Joint : the place on a stem from which a leaf or pair of leaves 

 springs. 



Nodose: knotty. 



Nomenclature : see binomial nomenclature. 



Normal : usual ; according to rule ; typical. 



Nucleolus : the body within the nucleus of a cell. 



Nucleus : the body of the ovule ; the small denser body in the proto- 

 plasm of a cell. 



