viii LIST OF ILLUSTRATIONS. 



PAGB, 



WATER HORSETAIL. Equisetum fluvititile facing 58 



WATER HORSETAIL. L'quisi'tum Jluviatile, (In colours) . . . facing 60 



SECTION OF WATER HORSETAIL STEM 61 



MARSH HORSETAIL. Ltjuinctniii painstre facing 62 



A FORM OF EQUISETUM LITTORALE facing 64 



FORMS OF SHORE HORSETAIL facing 66 



A MOSS CAPSULE 7 i 



FRUITING-SPIKE OFLYCOPODIUM 



SPOROPHYLL OF LVCOPODIUM 



SPOROPHYLLS OF VARIOUS LYCOPODIUMS 74 



COMMON CLUB-MOSS. Lycopodium clavatutn facing 82 



LYCOPODIUM CLAVATUM MONOSTACHYON 84 



STIFF CLUB-MOSS. Lycopodium annotinum facing 86 



LYCOPODIUM ANNOTINUM PUNGENS facing 88 



BRANCHLET OF LYCOPODIUM COMPLANATUM 89 



GROUND-PINE. Lycopodium complanatum facing 90 



BRANCHLET OF LYCOPODIUM COMPLANATUM CHAM/ECYPARISSUS 9* 



LYCOPODIUM COMPLANATUM CHAM/ECYPARISSUS . facing 92 



GROUND" FIR. Lycopodium alp inn in facing 94 



BRANCH OF LYCOPODIUM ALPINUM a 



SAVIN-LEAVED CLUB-MOSS. Lycopodium salnnccfolium . . . facing 96 

 BRANCH OF LYCOPODIUM SABIN/EFOLIUM 



LYCOPODIUM SITCHENSE facing 98 



BRANCH OF LYCOPODIUM SITCHENSE 9 



TREE CLUB'MOSS. Lycopodium obscurum. (In colours) . . . facing 100 



TREE CLUB-MOSS. Lycopodium obscurum facing 102 



STAG-HORN CLUB-MOSS. Lycopodium cernuum facing 102 



SHINING CLUB-MOSS. Lycopodium lucidulum facing 108 



SPORANGIA OF SHINING CLUB-MOSS iQ 



LYCOPODIUM LUCIDULUM POROPHILUM facing no 



BULBLET OF SHINING CLUB-MOSS "o 



FIR CLUB-MOSS. Lycopodium selago facing 112 



BOG CLUB-MOSS. Lycopodium inundatum Jacing \\i, 



FOX-TAIL CLUB-MOSS. Lycopodium alofiecuroidcs .... facing -\ in 



LYCOPODIUM ALOPECUROIDES ADPRESSUM ...... facing 116 



LYCOPODIUM ALOPECUROIDES ADPRESSUM. (In colours) . . . facing i\S 

 CAROLINA CLUB-MOSS. Lycopodium Carolinianum .... facing 120 



SYNANGIA OF PSILOTUM I26 



PSILOTUM TRIQUETRUM facing i."> 



MEGASPORE OF SELAGINELLA RUPESTRIS J 3i 



ROCK SELAGINELLA Selagineila rup^tris. (In colours) . . . facing 132 



SPIKE OF SELAGINELLA 



LEAF OF SELAGINELLA RUPESTRIS 



LEAVES OF A BIMORPHIC SELAGINELLA T 33 



ROCK SELAGINELLA. Selaginella rujtstrii facing 140 



SPIKE OF ROCK SELAGINELLA J 4' 



BRANCH OF SELAGINELLA WATSONI J 44 



SAND BARREN SELAGINELLA. Selaginella arenicola ...... 



SELAGINELLA BIGELOVII facing m 



