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two types of Leaves—Eucalyptus—Juniperus Sinensis—Ivy-Fall

of the Leaf—Length and Longevity of Coniferous Leaves—Ever-

green Leaves-Functions of Hairs~Hairs as a Protection-Rela-

tion of Hairs and Honey-Water-Plants often Glabrous—Mimicry

-Mayweed and Chamomile-Stinging-nettle and Dead-nettle-

Yellow Bugle-Form of Leaves in Water Plants—Floating and

Submerged Leaves—Plants with two forms of Leaves—Ranunculus

aquatilis—Much Divided Leaves frequent in Herbaceous Plants-

Entire Leaves frequent in Shrubs and Trees—Broad and Narrow

Leaves-Attitude of Leaves-Drosera and Plantago-Daphne

- Vegetation of Dry Regions-Succulent Plants—Various Forms

of Leaf in Lathyrus - Lathyrus Aphaca and Nissolia-Lobed and

Heart-shaped Leaves—Possible Modes of accounting for the

Difference—Leaves of Seedlings-Lobed Leaves often preceded

by Heart-shaped ones—Cephalandra-Hibiscus—Passiflora-Ex-

planation of Forms of Leaves-Form of Leaf has Relation to

Requirements of Plant-Senecio-Herbaceous Species-Shrubby

Species-Climbing Species--Succulent Species—Tree Species-

Great variety of Forms—Conclusion

Pages 119–147

LIST OF ILLUSTRATIONS.

PAGR

I

2

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8 8 14 14 15 15 16 16 18

21

FIG.
1. Lamium album
2. Flower of Lamium album
3. Section of ditto
4. Drosera rotundifolia .
5. Geranium pratense (young flower)
6. Geranium pratense (older flower)
7. Malva sylvestris
8. Malva rotundifolia
9. Stamens and stigmas of Malva sylvestris .
10. Ditto of Malva rotundifolia
11. Epilobium angustifolium .
12. Epilobium parviflorum
13. Diagrammatic section of Arum
14. Salvia officinalis. Section of a young flower
15. Ditto, visited by a Bee
16. Ditto, older flower
17. Stamens in their natural position
18. Stamens when moved by a Bee
19. Wild Chervil (Cherophyllum sylvestre).
20. Floret of Chrysanthemum parthenium, just opened
21. Ditto, somewhat more advanced
22. Ditto, with the stigmas expanded
23. Lotus corniculatus
24. Flower of Lotus corniculatus seen from the side and in front
25. Ditto, after removal of the standard . ..
26. Ditto, after removal of the standard and wings
27. Ditto, after removal of one side of the keel
28. Terminal portion of Fig. 27 more magnified .
29. Primula (long-styled form)

21

21

22

22

23 26 26 26 27 29 29 29 29 29 31

xiv

LIST OF ILLUSTRATIONS.

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63 65

PAGC 30. Primula (short-styled form)

31 31. Knantia dipsacifolia

38 32. Linnea .

39 33. Carlina

39 34. Silene nutans

41 35. Cardamine chenopodifolia

45 36. Vallisneria spirolis .

51 37. Viola hirta .

54 38. Viola canina

55 39. Ditto, Seed-vessel with seed

56 40. Ditto, Seed-vessel after ejecting the seed

57 41. The Herb Robert (Geranium robertianum)

58 42. Geranium dissectum

59 43. Geranium robertianum

61 44. Common Vetch. Vicia sepium

62 45. The Squirting Cucumber (Nomordica elaterium) 46. Seed-head of Poppy (Papaver) 47. Seeds of Maple, Sycamore, Lime, Hornbeam, Elm, Birch, Pine, Fir, Ash

68 48. Seeds of Willow Herb, Thrincia hirta, Tamarix, Willow, Cotton-grass, Bullrush

71 49. Myzodendron (after Hooker)

73 50. Seeds of Burdock, Agrimony, Bur Parsley, Enchanter's Nightshade, Cleavers, Forget-me-nots

76 51. Seeds of Harpagophyton procumbens and Martynia proboscidea. 77 52. Vicia amphicarpa

86 53. Lathyrus amphicarpus (after Sowerby) 54. Eurodium glaucophyllum (aster Sweet)

89 55. Seed of Stipa pennata.

91 56. Seeds of Corydalis heterocarpa

92 57. Pod of Scorpiurus subvillosa and S. vermiculatu

94 58. Pod of Biserrula

95 586. Seed of Castor Oil (Ricinus)

95 58c. Seed of Jatropha

95 59. Leaves of Beech .

97 60. Leaves of Lime

103 61. Leaves of Beech

104 62. Leaves of Elm

105 63. Leaves of Castanea

106 64. Leaves of Castanea and Beech

106 65. Leaves of Yew

107 66. Leaves of Box .

107

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