Masses 



median 



in unusual quantity, as pollen - 

 masses ; (2) used by Sir J. E. Smith 

 for SoRi. 



Mas'sula (Lat., a little lump), (1) the • 

 hardened frothy mucilage enclosing 

 a group of microspores in Hetero- 

 sporous Filicineae ; (2) in Phanero- 

 gams, a group of cohenng pollen- 

 grains produced by one primary 

 mother-cell, as in Orchideae ; also 

 styled Pollen-mass. 



Mast, the fruit of such trees as beech, 

 and other Cupuliferae. 



Mas'tic {fiaarixv, g^m), a resinous 

 exudation from Msiacia Lentiscus, 

 Linn. 



mast'igopod {fidaTi^, a whip ; irovs, 

 iroBhs, a foot), a stage in the develop- 

 ment of Myxogastres, the contents of 

 each spore escape as a zoogonidium 

 enclosing a nucleus and contractile 

 vesicle, %\ith a single ciliuni ; Mas'- 

 tigospores, -ae ( + Spore), plants 

 with flagellate spores (Clements). 



mas'toid (uocrrbs, a breast ; eUos, like), 

 nipple-like. 



Mat, a closely intertwined vegetation, 

 with roots and rhizomes intermixed ; 

 - Ge'cphytes, ph ( + Geophyte), 

 perennial spot-boimd plants, mostly 

 m onocoty ledons. 



Math, an old term for crop, as after- 

 math = second crop, 



mato''iiioid (sISos, resemblance), like 

 the Fern genus Matonia. 



Ma'trix (Lat., the womb), the body on 

 which a Fungus or Lichen grows ; -^ 

 Poriinis, the cell in which pollen - 

 grains are developed ; the pollen - 

 mother-cell. 



matrocli'nous {viater, a mother ; KXivw, 

 I incline), used of hybrids which 

 have th& characters of the female 

 parent. 



matteuo'ciold {el^os, resemblance), 

 akin to or like the Fern genus 

 ifatteuccia. 



Mattul'la, or Mat'tula {matta, a mat), 

 the fibrous material surrounding 

 the petioles of palms ; cf. Me- 

 dulla (3). 



Matura'tion, Matara'tio (Lat.), ripen- 

 ing. 



matures''cent {mcUurescens, becom- 

 ing ripe), approaching maturity 

 (Crozier). 



matuti'nal, matiitina'lis, matuti'nus 

 (Lat. ), pertaining to the morning ; 

 plants flowering early, as Ipomoca 

 purpurea, Roth. 



maz'ixnal {maximus, greatest), em- 

 ployed to denote the utmost which 

 an " organism can endure as, the 

 gi-eatest degree of heat. 



Mazae'dlum (deriv. ?), the fructifica- 

 tion of Calicei, the spores free from 

 the asci and forming a powdery mass 

 in nearly closed heads. 



Mead'ow, disylh, usually grass-land 

 artificially maintained by mowing 

 and grazing. 



meary, farinaceous. 



mean'djiform + (fiaiavSpos, a winding 

 river; forma, shape), having a wind- 

 ing direction, as the anther-cells of 

 Cucurbitaceae. 



Mea'tus (Lat., a i)assing) intercel'lu- 

 laris, an intercellular passage ; •^ 

 pneumat'icus, an air-passage. 



Meclianomorpii''osis i/J-vxO'yh), contriv- 

 ance ; ij.6n(pa<ris, shaping), a woixl 

 coined by Sachs to express mechani- 

 cal changes in structure produced in 

 the larger gi'oups by similar external 

 causes, as leaf-like organs in Algae 

 and Phanerogams ; Mechanot'ropism 

 {rpoir^, a turning), a general term 

 for all orienting movements in re- 

 sponse to mechanical agencies. 



Me'conlne {/x^kuv, a poppy), an alka- 

 loid contained in opium ; Meco'nium, 

 botanically, the juice of Papaver 

 somniferum, Linn. 



me 'dial, me'dian, media' nus (Lat., in 

 the middle), belonging to the 

 middle ; me'dian Bract'eole, one in- 

 serted at the middle of the pedicel ; 

 '- Chor'isis, the multiplication of a 

 single organ in the median plane ; 

 -^ Line, the central line of a bilateral 

 organ as the midrib of a symmetric 

 leaf; --' Plane, when used of a 

 flower in the plane of bract and 

 axis ; ~ Wall, in Archegoniates, 

 the wall in a plane at right angles 

 to the basal wall dividing the pro- 



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