about twice as long as broad, with regular curved
outlines, broadly elliptical.
O'VATE, like a longitudinal section of an ordinary hen's egg,
with the attachment, if any, at the broad end.
O'VOID, the shape of a hen's egg and attached, if at all, at the
large end.
Ovoid spike rush, 118
Ox-eye daisy, 163
Oyster-plant, 170
Paint brush, 167
PA'LE-A, PA'LET, the upper bract which with the floral glume
incloses the flower in grasses.
Pale persicaria, 120
Panicum, 113
Panicum capillare, 115
Panicum, smooth, 115
Papaveraceae, 132
Parsley family, 148
Parsnip, wild, 149
Pastinaca, 149
Patience dock, 123
Pennsylvania persicaria, 120
Penny cress, 137
Peppergrass, 135, 136
Persicaria, dock-leaved, 120
Pigeon grass, 117
Pigweed, 124
Pigweed family, 124
Pink family, 128
Plantago, 158, 159
Plantain family, 158
Poa annua, 116
Poa compressa, 116
Poa, flat-stemmed, 116
Poa pratensis, 116
Poison hemlock, 148
Poison ivy, 145
Polygonaceae, 119
Polygonum, 119-120
Poppy family, 132
Porcupine grass, 117
Portulaca, 131
Portulacaceae, 131
Potentilla, 138, 139
Prickly lettuce, 168
Prickly sida, 146
Prostrate amaranth, 127
Prunella, 155
PU-BES'CENT, clothed with soft and rather short hairs.
Pulse family, 139
Purple Jimsonweed, 155
Purple-stemmed beggar-ticks, 163
Purslane family, 131
Purslane speedwell, 157
Pusley, 131
Quack grass, 110
Ragweed, 160
Ranunculaceae, 131
Ranunculus, 131, 132
RA'PHE, the adherent funiculus connecting the hilum and chalaza
in anatropous or amphitropous ovules or seeds.
Red clover, 141
Red-seeded dandelion, 170
Red root, 153
RE-TIC'U-LATE, in the form of network.
Rhus, 145
Rib-grass, 158
Rocket, yellow, 133
ROOT, the descending axis which is destitute of leaves or nodes.
ROOT STOCK, rhizome, a stem usually subterranean and more or
less thickened, producing young branches.
Rosaceae, 138
Rose family, 138
Rough cinquefoil, 139
Rough pigweed, 127
Rudbeckia, 169
Rugel's broad-leaved plantain, 159
Rumex, 121, 122, 123
Running mallow, 146
Rush family, 118
Rush, slender, 118
Rush, spike, 118
Russian thistle, 126
Rutabaga, 133
Rye,
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