INDEX. 
Polysepalous, 84, 85. 
Polysymmetrical, 80 (see Regular). 
Pome, 136. 
Ponds, 62. 
Poplar, 116. 
Poppy, 21, 62, 84, 87, 101, 103, 105, 122, 
138, 141, 150, 155. 
Pore, 97, 123, 124, 138. 
Porous capsule, 138, 141. 
Position, relative, 7, 27. 
ieee 85, 86, 89, 94, 95, 103, 105, 127, 
156. 
Potassium, 10, 160. 
Potato, 5, 17, 26, 44, 45, 59, 64, 89, 93, 97, 
149, 157. 
Potentilla, 62. 
Power (of microscope), high p., 31; low 
P., 31- 
Practical work, 6. 
Preefloration, 84, 87. 
Preefoliation, 84, 140. 
Prickle, 28, 41, 65, 86, 111. 
Primary, 132, 146; leaflet, 61. 
Primine, 108. 
Primrose, 76, 84, 87, 89, 93, 95, 96, 97, 101, 
106, 124, 125, 138, 151, 157- 
Primulacez, 157. 
Prismatic, 27. 
Privet, 100. 
Procumbent, 25. 
Prosenchymatous, 32. 
Prostrate, 25. 
Protection ; of buds, 47 ; of flower, 111-114, 
148, 151; Of foliage leaf, 61 ; of lamina, 
54; of root, 17; of seeds, 140, 148; of 
shoot, 27, 40, 61. 
Proteids, 5, 26, 42, 67, 71. 
Proterandry, 115, 117, 120, 122, 123, 124, 
128, 129, ISI. 
Proterogyny, 115, 117, 118, 121, 123, 151. 
Protoplasm, 4, 5, 8, 10, 11, 17, 28, 31, 32) 33; 
34) 35) 49) 42, 43, 65, 71, 72) 73) T14, IIS, 
160; composition of, 5; structure, 5. 
Protoxylem, 34, 36, 37. 
Pruning, 18. 
Pseudaxis (see Sympodium). 
Pseudocarp, 135-136, 151. 
Pubescent, 28. 
Pulp, 8, 139. 
Pulvinus, 53, 147. 
Purple, 88, 89, 119, 124. 
Purple loosestrife, 124, 125. 
Purple orchis (see Orchis). 
Pyxidium, 138. 
Q. 
QUILLED dahlia, gs. 
Quincuncial, sr. 
R. 
RACEME, 77, 78, 79, 117, 154, 155- 
Racemose, 24, 46, 75, 76, 80, 149. 
Radial, 30. 
Radical, 24) 57, 147 149. 
Radicle, 132, 133, 142, 143) 152. 
Radish, 13, 14, 155. 
Ragged-robin, 87, 156. 
Rain, 113. 
Rank, 83, 149. 
Ranunculacez, 155. 
177 
Ranunculus (see Buttercup). 
Raphe, tog, 132. 
Raspberry, 25, 103, 123, 139, 156. 
Razor, 29, 159. 
Ray, 78; ray floret (see Floret). 
Reagents, 159, 160. 
Receptacle, 78, 121 ; for water, rr2. 
Recumbent, 25. 
Red, or. 
Reddish brown, 1109. 
Reduction, 84, 94, 96, 129. 
Reflected light, 158. 
Reflexed, 85, 88, 90, 113, 125. 
Regular, 80, 88, 89, 123-126, 154, 155, 156, 
157~ 
Beliaon of floral leaves, 82, 148, 150 (see 
Floral diagram). 
Relationships (of plants), 2. 
Renewal of organisms, 6. 
Reniform, 58. 
Replum, 137. 
Reproduction, 12; true, 114-131; vegeta- 
tive, 19, 43, 44, 71, 114. 
Reproductive, 19. 
Reserve materials, 14, 18, 24, 25, 26, 42, 64, 
67, 68, 134, 142, 143, 160. : 
Respiration, 11, 12; of flower, 114; of foli- 
age leaf, 71; of germinating seed, 143; 
of root, 18-19; of simple plant, 11; of 
stem, 43. 
Respiratory cavity, 66. 
Reticulated, 56. 
Revolute, 149. 
Rhizome, 26, 42, 154. 
Rhododendron, 97, 138. 
Ribbed, 23. 
Richardia, 153. 
Ridged, 28, 29, 49, 53, 146. 
Ringent, go. 
Ringing, 42. 
Rings, annual, 38, 39. 
Ripening, of seed, 86, gg. 
Robinia, 19, 53, 64. 
Room, plants in, 70. 
Root, 7, 8; adventitious, 13, 14, 19, 21, 22, 
26, 43, 495 air, 13; I. cap, 16, 17, 34; ©. 
climbers, 26; description of, 146, 149; 
development of, 14, 39; examination 
questions in, 161; r. fibre, 1493 r. 
hairs, 14, 18, 28; morphology, 13, 17, 
21, 143, 152; parasitic, 13, 18; physio- 
logy, 17-20, 42, 44, 45, 67, 69; Yr. pres- 
sure, 18; primary, 13, 14, 19, 20, 215 
secondary, 13, 14, 19; r. sheath, 1433 
structure of, 14-15, 31, 66, 159; tap, 13, 
I4, 21, 146, 1523. r. tips, \x9, 20m 
tubers, 14, 19; underground, 13 ; 
water, 13, 18. 
Rootstock, 24. 
Rosacez, 156. 
Rose, 21, 25, 28, 48, 51, 59, 63, 81, 83, 84, 87, 
103, 106, 110, 123, 130, 156. 
Rose-bay willow-herb, 120, 124, 
Rosemary, 149, 157- 
Rosettes of leaves, 19, 24, 61, 112. 
Rostellum, 130. 
Rotate, 89. 
Rounded, 57. 
Round-leaved sundew, rr. 
Rowan, 156. 
Rows of cells, 31-32, 33, 40. 
Rudiment, 94, 96. 
