312 



GLOSSARY 



E 



Embryo ... ... young plant contained in the seed, iS. 



Endodermis ... the innermost layer of the cortex abutting on and forming a 



sheathing layer round the stele, 3p. 

 Exodermis ... ... the layer or layers of thickened cells beneath the piliferous 



layer of roots, 32. 

 Extra vaginal ... applied to shoots or branches that come out piercing the leaf 



sheath in grasses, 9. 



Fascicle 

 Filiform 



Flexuous 

 Foveolate 



a cluster or bundle, 95. 



thread shaped, slender and thin, 54. 



bent alternately in opposite directions, 62. 



marked with small pits, 180. 



Genicnlately 

 Geminate ... 

 Germ-sheath 

 Gibbous 

 Glabrescent 

 Glabrous ... 

 Glaucous 

 Glume 



Hirsute 

 Hyaline 



bent abruptly so as to resemble a knee-joint, 118. 

 in pairs, 59. 



a sheath enclosing the bud or the plumule in a grain, i8 # 

 convex or rounded, 77. 

 slightly hairy but becoming glabrous, S9. 

 quite smooth without hairs, 89. 

 covered with a bloom, 160. 



the chaffy two-ranked members found in the inflorescence ol 

 grasses. 



H 



covered with fairly long distinct hairs, 90, 

 colourless or translucent, 51. 



I 



Imbricate overlapping, 49. 



Internode ... ... portion of a stem between two nodes, 2. 



Intravaginal ... growing out from inside the sheath. 



Involucel a ring of bracts surrounding several spikelets, 120. 



Keeled 



. .. having a ridge along the length, 59, 



Lemma ... ... the flowering glume of a grass, 15. 



Ligule ... ... the thin, scarious projection found at the top of the leaf sheath 



where it joins the blade in grasses, 3. 

 Lodicule ... ... a small scale outside the stamens in the flower of grasses. 



M 



Membranous ... thin and semi-transparent, 51. 



Monoecious ... stamens and pistils on separate flowers, but on the same 



individual, 144. 

 Motor C«*lls ... ... large thin-walled cells occurring in the epidermis of the leaves 



of some grasses, 35. 

 Mucronate possessing a short and a straight point, 70. 



Node ... 



N 



the part of the stem which has a leaf, or the knot in the grass 

 stem, 2. 



