Potato, a stem, 104, 131. 
eyes of, 174, 131. 
Potato, sweet, 102. 
Prickles, 174, 175: 
Primrose, evening, 197, 229, 230. 
Protoplasm (life substance), 140, 141. 
Puffballs, 35, 36, 59, 95. 
Pussy willow, 129. 
tassels of, 205-207. 
Q 
Quince leaf, 135, 136, 137, 165. 
R 
Radish root, 102. 
Raspberry, development of, 237-239. 
Red baneberry, 49. 
Red clover, stem of, 117. 
Red maple, seed of, 92. 
leaves of, 127. 
buds of, 127. 
Rhubarb plant, 164. 
Robin's plantain, 251, 252. 
Root branches, 162-164. 
Roots, origin of, 81, 113. 
hairs of, 81, gg—-102, 104, 123, 143. 
function of, 99-103. 
fibrous, 102, 103. 
fleshy, 102-104. 
as food, 103, 104. 
above-ground, I06-III. 
varieties of, Io6-112. 
hanging, 107. 
underground, III. 
water, III, I12. 
absorbing capacity of, 146. 
spreading of, 162, 163. 
position of, 163, 164. 
Roots and stems, 99-122. 
Rootstocks, function of, 106, 217. 
Rose, petals of, 32, 33. 
stem of, I20. 
Rose family, 31, 32, 36, 40, 235. 
Rose hip, 33, 34. 
Rose mallow, 258. 
Rose of Jericho, pod of, 71. 
Rose, wild, 32. 
S 
Saint John’s-wort, pistil of, 200. 
Saxifrage, pistil of, 200. 
Sea pinks, 228, 258. 
Seaweed, 258. 
N 
rg 
Seedbox, in berries, 236-239. 
Seed coat, 80-84, 86, 113. 
Seed leaf, plants with one (monocotyle- 
dons), 88. 
of corn, 88. 
Seed leaves (cotyledons), description 
of, 78, 81-go. 
plants with two (dicotyledons) , 85-87. 
of acorn, 87. 
of pea, 87. 
of walnut, 87, 88. 
' of chestnut, 87, 88. 
| plants with many (polycotyledons), 
88, 89. 
development of, 113. 
number of, 120, I2I, 165. 
Seeds, growth of, in the apple, 18-20. 
the object of the plant's life, 24. 
importance of, to world, 27. 
protection of, 28, 29. 
reason for scattering of, 50, 51. 
transportation of, 52-64, 69-73. 
winged, 61. 
shooting, 63-67. 
nourishment of, 75-77. 
planting of, 79-87, 95, 96. 
germination of, 80-89, 92, 198, I99. 
as food, 89-91. 
as storehouses, go, 9I. 
Shin leaf flower, stamen of, 193. 
Shooting seeds, 64-67. 
| Silver maple, 2Io. 
Skunk cabbage, description ot, 204. 
| Snowberry, stem of, 117. 
Snowdrop, 216. 
Solomon’s seal, fruit of, 48. 
underground stem of, 105, 216. 
scars of, 105, 106. 
Solomon’s seal, false, 48. 
Speckled alder, 173. 
Spice bush buds, 129. 
Spikenard, 49. 
Spring beauty, 203, 216. 
Spur, 226. 
Squash, seed of, 80, 85, 86, go. 
Squirting cucumber, 67. 
Stamens (pins with dust boxes), de- 
scription of, 14. 
function of, 188. 
defined, Igo. 
varieties of, 193-195. 
position of, 248. 
Steeple bush, leaves of, 172. 
Stems, development of, 81, 112, 113. 
of bean plant, 96. 
underground, 104-106, 150, 216- 
Seed sailboats (appendages), 56-60, 219. 
207. 
Seedbox (ovary), described, 15, 18. 
function of, 188. 
varieties of, 104, 112-120. 
use of, to plant, 113-117. 
habits of, 117-119. 
