Each scale of the pine cone is a whole pistillate flower. (Gray, 1858).
Each scale of the pine cone is a whole pistillate flower. (Gray, 1858).
The outer coat is extended into a thin border or wing as in this Trumpet Creeper, (Gray, 1858).
Flower of Anemone,(Gray, 1858).
Flower of Anemone, cut in half, (Gray, 1858).
Pistil of Anemone, cut in half, showing the ovary and ovule,(Gray, 1858).
Akene of Anemone, enlarged,(Gray, 1858).
Akene of Anemone, enlarged, cut in half to show the seed in it, (Gray, 1858).
Akene of Clematis and feathery tail, (Gray, 1858).
A separate pod of the Wild Columbine, (Gray, 1858).
The five pods of the Wild Columbine opening, (Gray, 1858).
Flower of Larkspur, (Gray, 1858).
Four petals of Larkspur, (Gray, 1858).
Flower of Wolfsbane, or Monkshood, (Gray, 1858).
Flower of Laurel-Magnolia, (Gray, 1858).
Stamen of Laurel, magnified, (Gray, 1858).
The Laurel cone of fruit, the seeds hanging as they drop, (Gray, 1858).
The stamen of the Papaw, (Gray, 1858).
The shoot of the Barberry, (Gray, 1858).
The cluster of leaves and raceme of the Barberry, (Gray, 1858).
Enlarged individual flower of the Barberry, (Gray, 1858).
Enlarged petal of the Barberry, (Gray, 1858).
A stamen, with the anther opening, of the Barberry, (Gray, 1858).
Flower and bud of White Water-Lily, (Gray, 1858).
A flower-bud of the Poppy,casting its calyx.
Pod of Celandine opening, (Gray, 1858).
Bulb of Dicentra, in the herb family,(Gray, 1858).
Flowers and leaf of Dicentra, in the herb family,(Gray, 1858).
Flower of Dicentra, in the herb family,(Gray, 1858).
Flower of Mustard, (Gray, 1858).
Stamens and pistil of Mustard, (Gray, 1858).
Flower of Frostweed, (Gray, 1858).
The calyx and pistil of Frostweed, (Gray, 1858).
The ovary of Frostweed, cut across and magnified, (Gray, 1858).
Pistils united in St. John's Wort, (Gray, 1858).
Flowers of St. John's Wort, (Gray, 1858).
Pod of St. John's Wort, cut in half,(Gray, 1858).
piece of Side-flowering Sandwort,(Gray, 1858).
Flower of Sandwort, magnified(Gray, 1858).
Pistil of Sand-Spurrey cut through lengthwise and magnified, (Gray, 1858).
Ovary of Sand-Spurrey, cut across (Gray, 1858).
Pistil and flower of Catchfly cut through lengthwise, (Gray, 1858).
Half of the flower of the common Purslane, (Gray, 1858).
Claytonia or Spring Beauty, (Gray, 1858).
