820 



GLOSSAKT. 



Mattulla, the fibrous matter covering the 

 petioles of Palms. 



Medulla, the cellular pith. 



Medullary Rays or Plates, cellular pro- 

 longations uniting the pith and the bark. 



Medullary Sheath, sheath containing spiral 

 vessels surrounding the pith in Exogens. 



Megasporangia, same as Macrosporangia. 



Megatherms, or Macrotherms, plants re- 

 quiring a high temperature. 



Megistotherms, plants requiring extreme 

 heat. 



Meiostemonous or Miostemonous, the sta- 

 mens less in number than ^the parts of the 

 corolla. 



Membranaceous or Membranous, having 

 the consistence, aspect, and structure of a 

 membrane. 



Meniscus, a lens having a concave and a con- 

 vex face, with a sharp edge. 



Merenchyma, tissue composed of rounded 

 cells. 



Mericarp, single-seeded portion of a fruit 

 composed of several monospermal carpels, 

 which separate from each other when ripe ; 

 as in Borage, Labiatse, and Umbelliferae ; 

 also the separate monospermal portion of a 

 Lomentum. 



Merithal, a term used in place of internode ; 

 applied by Gaudichaud to the different parts 

 of the leaf. 



Mesocarp, middle covering of the fruit. 



Mesochilium, middle portion of the labellum 

 of Orchids. 



Mesophlceum, middle layer of the bark. 



Mesophyllum, the parenchyma of the leaf, 



Mesos, the middle, in composition Meso. 



Mesosperm, applied to a covering of the seed 

 derived from the secundine. 



Mesotherms, plants requiring a moderate 

 heat 



Metasperms, another name for Angiosperms. 



Metre, equal to 39. 37079 inches British. 



Micrometer, instrument for measuring micro- 

 scopic objects. 



MiCROPVLE, die opening or foramen of the 

 seed. 



Micros, small, in composition Micro. 



MicROSPORANGiA, cells or thecEG, containing 

 microspores. 



Microspores, small spores of Lycopods, pro- 

 ducing antheridia. 



Microtherms, plants requiring asmaJl amount 

 of heat. 



Millimetre, equal to 0.03937079 English 

 inch,_ or 25.39954 millimetres equal to an 

 English inch. 



Mitriform, shaped like a mitre, as the calyp- 

 tra of some Mosses. 



Molecule, an exceedingly minute body in 

 which there is no obvious determinate ex- 

 ternal circle or internal centre. 



MoNADELPHOus, Stamens united into one 

 bundle by union of their filaments, 



MoNANDROUS, having one stamen. 



MoNEMBEVONY, haviug a single embryo. 



Moniliform, beaded, cells united, with inter- 

 ruptions, so as to resemble a string of beads. 



MoNocARPic, producing flowers and fruit once 

 during life, and then dying. 



Monochlamydeous, flower having a single 

 envelope, which is the calyx. 



MoNOCLiNous, stamens and pistils in the same 



flower. 

 MoNocoTYLEDONOus, having one cotyledon in 



the embryo. 

 Monoecious, or Monoicous, stamens and pis- 

 tils in different flowers on the same plant. 

 Monogyncecial, applied to simple fruits, 



formed by the pistil of one flower. 

 Monogynous, having one pistil or carpel, also 



applied to plants having one style. 

 Monopetalous, same as Gamopetalotts, 

 Monophyllous, same as Gamopkylloits, 

 MoNOS, one, in composition Mono and Mon, 



as Monandrotts, one stamen ; sometimes 



applied to the union of parts into one, as 



Monopetalous^ meaning combined petals ; 



same as Latin Unus. 

 MONOSEPALOUS, Same as Gamosepalous. ^ 

 Monospermous or Monospermal, having a 



single seed. 

 Monothecal, having a single loculament. 

 Monstrosity, an abnormal development, 



applied more especially to double flowers. 

 Morphology, the study of the forms which the 



different organs assume, and the laws that 



regulate their metamorphoses. 

 MucRO, a stiff t)oint abruptly terminating an 



organ ; Mucronate, having a mucro. 

 Mucus, definite, peculiar matter forming a 



covering of certain seaweeds. 

 MuLTi cos TATE, many-ribbed. 

 MuLTiFiD, applied to a simple leaf divided 



laterally to about the middle into numerous 



portions ; when the divisions extend deeper 



it is Multipartite, 

 Multilocular, having many locularaents. 

 Multiple, applied to anthocarpous or polygy- 



noscial fruits formed by the union of several 



flowers. 

 MuRiCATE, covered with firm, short points, or 



excrescences. 

 MuRiFORM, like bricks in a wall ; applied to 



cells. 

 Muscology, the study of Mosses. 

 MuTicus, without any pointed process or awn. 

 Mycelium, the cellular spawn of Fimgi. 



Naked, applied to seeds not contained'in a 

 true ovary ; also to ^ flowers without any 

 floral envelopes. 



Napiform, shaped like a turnip. 



Naturalised, originally introduced by arti- 

 ficial means, but become apparently wild. 



Navicular, hollowed like a boat. 



Nectariferous, having a honey-like _ secre- 

 tion ; applied to petals having depressions or 

 furrows at their base, which contain a sweet 

 secretion. _ 



Nectary, any abnormal part of a flower. It 

 ought to be restricted to organs secreting a 

 honey-like matter, as in Crown Imperial 



Neme^, from Nenta, a thread, applied by 

 Fries to cryptogams in allusion to the ger- 

 mination by a protruded thread, without 

 cotyledons. 



Nervation or Neuration, same as Venation. 



Netted, applied to reticulated venation ; also 

 covered with raised lines disposed like the 

 threads of a net. 



NiTiDUS, having a smooth and polished surface. 



Node, the part of the stem from which a leaf- 

 bud proceeds ; a joining. 



