INDEX. 
Polysepalous, 84, 85 
Polysymmetrical. 80 (see Regular 
Pome, 136 
Ponds, 62 
Poplar, 116 
Poppy, 21, 62, 84, 87, 101, 103, 105, 122, 13%, 
141, 161, 167 
Pore, 97, 123, 124, 138 
Porous capsule, 138, 141 
Position, relative, 7, 27 
Posterior, 85, 86, 89, 94, 95, 103, 105, 127; 
168 
Potassium, 10, 173 
Potato, 5, 17, 26, 44, 45; 50; 64, 89, 93, 97: 
160, 169 
Potentilla, 62 
Power (of microscope), high p., 31; low 
p., 31 
Practical work, 6 
Preefloration, 84, 87 
Preefoliation, 84, 160 
Prickle, 28, 41, 65, 86, t11 
Primary, 132, 156; leaflet, 61 
Primine, 108 
Primrose, 76, 84, 87, 89, 93, 95, 96, 97, 101, 
106, 124, 125, 138, 162, 170 
Primulacez, 170 
Prismatic, 27 
Privet, 100 
Procumbent, 25 
Prosenchymatous, 32 
Prostrate, 25 
Protection; of buds, 47 ; of flower, 111-114, 
158, 162; of foliage leaf, 61; of lamina, 
54; Of root, 17; of seeds, 140, 148; of 
shoot, 27, 40, 61 
Proteids, 5, 26, 42, 57, 71 
Proterandry, 115, 117, 120, 122, 123, 124, 
128, 129, 162 
Proterogyny, 115, 117, 118, 121, 123, 162 
Protoplasm, 4, 5, 8, 10, 11, 17, 28, 31, 32, 33, 
34s 35» 49, 42, 43, 65, 71, 72, 73, 114, 115; 
1733 composition of, 5; structure, 5 
Protoxylem, 34, 36, 37 
Pruning, 18 
Pseudaxis (see Sympodium) 
Pseudocarp, 135-136, 163 
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, 95 
Quincuncial, 51 
R 
RACEME, 77, 78, 79, 117, 166, 167 
Racemose, 24, 46, 75, 76, 80, 160 
Radial, 30 
Radical, 24, 57, 157, 160 
Radicle, 132, 133, 142, 143, 163 
Radish, 13, 14, 167 
Ragged-robin, 87, 168 
Rain, 113 
Rank, 83, 160 
Ranunculacee, 166 
191 
Ranunculus (see Buttercup) 
Raphe, 109, 132 
Raspberry, 25, 103, 123, 139, 169 
Ray, 78; ray floret (see Floret) 
Razor, 29, 172 
Reagents, 172, 173 
Receptacle, 78, 121 ; for water, 112 
oe 25 
Red, 9 
Reddish brown, 119 
Reduction, 84, 94, 96, 129 
Reflected light, 171 
Reflexed, 85, 88, 90, 113, 125 
Regular, 80, 88, 89, 123-126, 154, 155, 168, 
169, 170 
Relation of floral leaves, 82, 158, 161 (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, 173 
Respiration, 11, 12; of flower, 114; of 
foliage leaf, 71; of germinating seed, 
143; Of root, 18-19; of simple plant, 
113; Of stem, 43 
Respiratory cavity, 66 
Reticulated, 56 
Revolute, 160 
Rhizome, 26, 42, 166 
Rhododendron, 97, 138 
Ribbed, 23 
Richardia, 164 
Ridged, 28, 29, 49, 53, 156 
Ringent, go 
Ringing, 42 
Rings, annual, 38, 39 
Ripening, of seed, 86, 99 
Robinia, 19, 53, 64 
Room, plants in, 70 
Root, 7, 8; adventitious, 13, 14, 19, 21, 22. 
26, 43, 49; air, 13; Y. cap, 16, 17, 343 
r. climbers, 26; description of, 1-6, 
160; development of, 14, 39 ; examina- 
tion questions in, 174; r. fibre, 160; 
hairs, 14, 18, 28; morphology, 13, 17, 
21, 143, 1633; parasitic, 13, 18; physio- 
logy, 17-20, 42, 44, 45, 67, 69; I. pres- 
sure, 18; primary, 13, 14, 19, 20, 213 
secondary, 13, 14, 19; I. sheath, 1433 
structure of, 14-15, 31, 66, 172 ; tap, 13, 
TAs 2Ts) 150s. 10350 8s tips, BOR ery hy 
tubers, 14, 319; underground, 13; 
water, 13, I 
Rootstock, 24 
Rosacez, 168 
Rose, 21, 25, 28, 48, 51, 59, 63, 81, 83, 84, 87 
I03, 106, 110, 123, 130, 149 
Rose-bay willow-herb, 120, 124 
Rosemary, 160, 169 
Rosettes of leaves, 19, 24, 61, 112 
Rostellum, 130 
Rotate, 89 
Rounded, 57 
Round-leaved sundew, 11 
Rowan, 169 
Rows of cells, 31-32, 33, 40 
Rudiment, 94, 96 
