136 



INDEX 



Service, wild, curious root-deve- 

 lopment of a, 114 

 Shepherd's purse, " starring " of, 



14 



Shrubby nettle, sting of, 90 

 Snowdrop, protective processes 



of, 3i 

 Snowflake, water-borne seeds of, 



60 ; leaf -origin of sepals and 



petals illustrated by, 119 

 Soldanellas and spring, 18 

 " Spaniard's Beard," 43 

 Speedwells, spreading habits of, 2 

 Sperm cell of fern, 66 

 Sporangia of ferns, 65 

 Spreading plants, 2 

 " Spreading " methods of plants, 



10 



Spring, transformations of, 17, 29 

 Squirrels and seeds, 29 

 Stamens, 117, 122 

 Starch, in seed, 51 

 "Starring" habits of weeds, 13 

 Stinging plants, 90 

 Strawberries, spreading habits 



of, 2 



Sundews, sensitiveness of, no 

 Sunflowers and sun, 106 

 Sweet violet, seed dispersal of, 64 

 Sycamore, prolific seeding of, 1 1 ; 



colour of buds of, 20 ; seed of, 



5 8 . 

 Tannin, 92 



Telegraph plant, 109 



Tendrils, as means of climbing, 5 



Thistle, distribution of seeds of, 56 



Thorn as weapon of defence, 86 

 Thrincia hirta, distribution of 



seeds of, 57 



Tillandsia, growth of, 43 

 Toothwort, 47 

 Tulip, relationship between calyx 



and corolla illustrated by, 119 

 Twining plants, 5 

 Urtica gigantea, 90 

 Venus fly-trap, sensitiveness of, 



112 



Veronica, nectaries of, 69 

 Vine and light, 103 

 Virginian creeper and light, 103 

 Water-borne seeds, 58, 59, 60 

 Water cress, juice of, 92 

 Water lily, and spring, 18 ; 



colouring of leaf, 20 ; (white,) 



illustration of the origin of 



stamens 141, 124 



Wayfaring tree, bud-scales of, 25 

 White bryony, climbing methods 



of, 6 



White dead-nettle, mimicry of, 94 

 Whortleberry and insects, 98 

 Willow herb, distribution of seeds 



of, 57 

 Wind as cross-fertilising agency, 



82 



Winter plants, 30 

 Wood anemone and sun, 106 

 Wood sorrel, explosive seeds of, 63 

 Yellow Rattle, 47 

 Yew, leaves of, 26 

 Yucca and moth, pronuba yuc- 



casella, 38 



PRINTED BY CASSELL & COMPANY, LIMITED, LA BELLE SAUVAGE, LONDON, E.G. 



