2o6 



Elementary Botany 



INV 



around a single flower or a head of 



flowers, 02, 95 

 Involute (Lat. invoZuius, wrapped up). 



Arrangement in the leaf bud when the 



margins of the leaves are rolled towards 



the upper surfaqe, 65 

 Irregular. Applied to the calyx and 



corolla when the various parts are 



wanting in symmetry, 104, 107 

 /satis, 160 



/ 



UGLANS, 180 



X(^EEL._ The innermost petals of a 



papilionaceous flower, 109 

 Kino, 164 

 Knapweed, 171 



T ABELLUM (Lat. labium, a lip). 

 The lower lip or petal of orchids, 

 180 



Labiate, 155, 172 



Labiate (Lat. labijiin, a lip). Applied 

 to the calyx or corolla when arranged 

 in a two-lipped manner, 104, log, 172 



Laburnum, 164 



Laciniate (Lat. lacinia, a fringe). Ap- 

 plied to a lea-f when it is very much 

 cut up, 83 



Lactuca, 172 



Lamina (Lat. a. blade). The blade of a 

 leaf, 69 



LaTniu-m, 172, 173 



Lanceolate (Lat. lancea, a lance). Ap- 

 plied to leaves which are narrow and 

 pointed or lance-shaped, 79 



Larksptir, 158 



Latex (Lat. a liquid). A peculiar milky 

 juice in the stems and leaves of many 

 plants, 23 



Lathynis, 162, 163 



Laticiferous vessels (L^t. latex, znd/ero, 

 I bear). The vessels containing the 

 latex, 23 



Lavender, 174 



Leaves, 69 ; forms of, 78 ; functions of, 

 85 ; margin of, 76; structure of, 71 



Legume (Lat, legutnen, pulse). A one- 

 celled monocarpellary capsule opening 

 by both edges, 13*^, 162 



LeguminascB, 155, 162 



Lemon Grass, 188 



Lepidium, 160 



Lencojiim, 185 



Liber ^Lat. inner bark). The inner bark 

 of dicotyledons, 44, 48 



Lignin (Lat. lignus, wood). The 

 changed condition of cellulose as seen 

 in woody cells, 7 



Ligulate (Lat. ligula, a strap). A mem- 

 branous appendage at the top of the 

 sheath of the leaves of grasses, 186, 



Liguli^oree, 170, 171 



MES 



Lzgusticztm, i6g i 



LiliacecE, 155, 183 



Liliem, 183, 184 



Lilium., 184 



Linaria, 175 



Linear (Lat. linea, a line). Applied to 

 leaves which are long and narrow with 

 parallel edges, 79 



Liquidambar, 180 



Liquorice, 164 



Listera^ 182 



Loculicidal (Lat. loculus, a cell ; cieo, I 

 move). Applied ^ to those capsules 

 which, on dehiscing, open into the 

 loculi or cells, 137 



Loculus (Lat. a cell). The cell or inter- 

 nal cavity in the various organs of the 

 plant, as the anther, 116; fruit, 137; 

 or ovary, 120 



Locust-tree, 61, 164 



Logwood, 164 



Lomentum (Lat. bean meal). A fruit 

 which breaks up transversely into 

 several portions, 139, 159 



Lotus, 163 



Lffvage, 169 



Lychnis, 161 



Lyrate (Lat. lyra, a harp). A leaf with, 

 the terminal lobe rounded and several 

 smaller lobes below, 82 



Lysima^hia, 176 



TV/TARGIN of leaves, 76 

 Marjoram, 173 



Marrubiuin, 173 



Marsh Marig'old, 157, 158 



Mat Grass, 187 



Matihiola, 160 



May, 166 



Meadow Saffron, 185 



Meadow Sweet, 166 



Medicag'o, 163 



Medulla (Lat. the interior part). The 

 pith of dicotyledonous stems, 42-44 



Medullary rays. The rays of parenchy- 

 matous tissue extending from the pith 

 to the bark, 44, 50 



Medullary sheath. The layer of vessels 

 surrounding the pith, 45 



Melampymmt, 175 



Melilotus, 163 



Melissa, 174 



Mentha, 173 



Mericarp (Gr. ineris, a part ; karpos, a 

 fruit). When a fruit breaks^ up into 

 pieces without the seeds falling out, 

 each piece is called a mericarp, 138 



Meristem (Gr. meristes, a divider). 

 Growing tissue^ the cells of which are 

 continually dividing so as to produce 

 fresh tissue, 24 



Mesocarp (Gr. inesos, middle ; karPos, 

 fruit). Themiddlelayer of the fruit, 135 



Mesophlosum (Gr. mesos. middle ; 

 phloios, bark). The middle or green 



* layer of the bark of dicotyledons, 43, 

 48 



