A Practical Course in Botany With Especial Reference to Its Bearings On Agricu

Eliza Frances Andrews

The book A Practical Course in Botany With Especial Reference to Its Bearings On Agricu was written by author Eliza Frances Andrews Here you can read free online of A Practical Course in Botany With Especial Reference to Its Bearings On Agricu book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Practical Course in Botany With Especial Reference to Its Bearings On Agricu a good or bad book?

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Now turn the flower over and sketch the inside, labeling the three large, petal-like expan- sions in the center, stigmas. Do you see any stamens ?
Remove one of the sepals and look under the stigma; what do you find there ?
Notice the little honey pockets at the foot of the stamen. Run the head of your pencil into them and see what would happen to the head of an insect probing for honey.
Fig. 290. — Iris flower: sp, spathes ; s, sepals + p, petals = perianth.
- Vertical section of iris flower: ...ov, ovules ; pi, placenta ; tu, tube of the perianth inclosing the style ; sta, stamen ; sti, stigma : o, ovary. (After Gray. ) Fig. 2 9 2 . — Vertical section of iris flower, with perianth removed, showing a stamen and three stig- mas: «/, stigmatic surface.
Fig. 293. — Cross sec- tion of ovary of iris flower : c, c, carpels ; /, /, locules ; Oil, ovules ; pi, placenta.
206 PRACTICAL COURSE IN BOTANY Remove the perianth and sketch the remaining organs in profile, showing the position of the stamens.

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