INVESTIGATIONS ON THE PHYLOGENY OF THE ANGIOSPERMS 21 
Figs. 20 and 21. Viburnum acerifolium L,, a leaf of vigorous and one of weaker 
growth. 
Figs. 22, 23 and 24. Cercis occidentalis Torr., Bauhinia sp. and Hymenostegia 
sp., series showing origin of the pinnately compound type among certain of the 
Leguminosae. 
Fig. 25. Engelhardtia spicata Blume, floral bract (leaf pinnate compound). 
Fig. 26. Betula nigra L., floral bract (leaf pinnate simple). 
Fig. 27. Carpinus caroliniana Walt., floral bract (leaf pinnate simple). 
Fig. 28. Bocconia frutescens L., floral bract (leaf pinnate lobed). 
Fig. 29. Dalechampia Passiflora C. &. H., floral bract (leaf palmate simple). 
Fig. 30. Adhatodia vasica Nees, floral bract (leaf pinnate simple). 
Fig. 31. Berberis Bealei Curt., petal (leaf pinnate simple). 
Fig. 32. Schizophragma hydrangeoides Sieb. & Zucc, petal (leaf pinnate simple). 
Fig. 33. Guichenotia macrantha Turcz., petal (leaf pinnate simple). 
Fig. 34. Anisopiera glabra Kurz, calyx lobe (leaf pinnate simple). 
Fig. 35. Calycopteris floribunda L., calyx lobe (leaf pinnate simple). 
Fig. 36. Mussaenda tenuiflora Benth., petal (leaf pinnate simple). 
Fig. 37. Casuarina stricta Ait., cotyledon (leaf greatly reduced). 
Fig. 38. Pterocarya fraxinifolia Spach, cotyledon (leaf pinnate compound) 
Fig. 39. Betula nigra L., cotyledon (leaf pinnate simple). 
Fig. 40. CelHs occidentalis L., cotyledon (leaf palmate simple). 
Fig. 41. Grevillea robusta A. Cunn., cotyledon (leaf pinnate compound). 
Fig. 42. Antigonon leptopus Hook., cotyledon (leaf pinnate simple). 
Fig. 43. Mirabilis jalapa L., cotyledon (leaf pinnate simple). 
Fig. 44. Rivinia aurantiaca Warsz., cotyledon (leaf pinnate simple). 
Fig. 45. Delphinium formosum Boiss. & Hook., cotyledon (leaf palmate lobed). 
Fig. 46. Brassica olearacea L., cotyledon (leaf pinnate simple). 
Fig. 47. Crataegus oxyacantha L., cotyledon, after Lubbock (leaf pinnate 
simple). 
Fig. 48. Mimosa pudica Mill., cotyledon (leaf pinnate compound). 
Fig. 49. Canarium strictum Roxb., cotyledon, after Lubbock (leaf pinnate 
compound). 
Fig. 50. Euphorbia pulcherrima Willd., cotyledon (leaf pinnate simple). 
Fig. 51. Rhus typhina L., cotyledon (leaf pinnate compound). 
Fig. 52. Acer saccharum Marsh, cotyledon (leaf palmate lobed). 
Fig. 53. Rhamnus cathartica L., cotyledon (leaf pinnate simple). 
Fig. 54. Ampelopsis tricuspidata Sieb. & Zucc, cotyledon (leaf palmate lobed). 
Fig. 55. Elaeocarpus oblongus Smith, cotyledon, after Lubbock (leaf pinnate 
s imple). 
Fig. 56. Tilia americana L., cotyledon (leaf palmate simple). 
Fig. 57. Althaea rosea Cav., cotyledon (leaf palmate lobed). 
Fig. 58. Passiflora alata Ait., cotyledon (leaf pinnate simple). 
Fig. 59. Lecythis Ollaria L., cotyledon, after Lubbock (leaf pinnate simple). 
Fig. 60. Aucuba japonica Thunb., cotyledon, after Lubbock (leaf pinnate 
simple). 
Fig. 61. Eucalyptus calophylla R. Br., cotyledon (leaf pinnate simple). 
Fig. 62. Argania sideroxylon Roem. & Schult., cotyledon (leaf pinnate simple). 
