QUANTITATIVE MICROSCOPIC DETERMINATIONS 173 



43. Gossypium. Bast. Fibrous tissue groups. 



44. Haematoxylon. Colored tissue. Reaction with copper solution. 



45. Hamamelis. Trichomes. Sclerenchyma cells. 



46. Hyoscyamus. Non-glandular trichomes. 



47. Ipecac. Raphides. Fibrous tissue. Starch. 



48. Iris florentina. Starch. Crystals. 



49. Jalap. Resin bearing cells. Starch. 



50. Kamala. Glands and trichomes. 



51. Krameria. Bast cells and groups of bast. 



52. Lobelia. Trichomes and groups of fibrous tissue. 



53. Lupulin. Number of glandular structures. 



54. Lycopodium. Number of spores. 



55. Mezereum. Number of bast fragments. 



56. Nux vomica. Trichome fragments and groups of endosperm tissue. 



57. Paracoto. As for coto. 



58. Physostigma. Starch granules. 



59. Phytolacca. Number of raphides. 



60. Pimenta. Groups of sclerenchyma cells and trichomes. 



61. Piper, black. Groups of endosperm cells and pericarp tissue. 



62. Piper, white. Groups of endosperm cells. 



63. Prunus serotina. Bast and sclerenchyma. 



64. Prunus virginiana. Bast. 



65. Pyrethrum flowers. Pollen grains. Sclerenchyma. Fibrous tissue. 



66. Quillaja. Bast and crystals. 



67. Rhammus purshiana. Groups of bast and crystal bearing fibers.- 



68. Rheum. Aggregate crystals. Ducts. Colored tissue. 



69. Sarsaparilla. Number of raphides. Ducts. Starch. 



70. Sassafras. Bast. Groups of sclerenchyma cells. 



71. Scopola. As for belladonna leaf and root. 



72. Senna. Trichomes. Neighboring cells. 



73. Stramonium. Non-glandular trichomes. 



74. Strophantus. Trichomes. 



75. Tabacum. Glandular and non-glandular trichomes. 



76. Thea. Trichomes and sclerenchyma cells. 



77. Viburnums. Bast, and bast and sclerenchyma cells. 



78. Zingiber. Starch granules. Cork tissue. 



