li QUESTIONS ON 



467. In the rose, (289) are the ovaries in a hollow receptacle, or in a tubular 



calyx? How is this in cherry and pear (308, 307) ? 



468. What two phrases are synonymous with ''calyx hypogynous?" 

 How is the calyx in saxifrage (fig. 310) and in mock-orange ? 



469. Of regular polypetalous flowers, what four forms are named ? 

 Of irregular polypetalous, what two forms ? 



Of regular monopetalous flowers, what seven forms? 

 Of irregular monopetalous, what two forms ? 

 470-484. Describe each and all these forms in order. 



To which of these classes belongs the tulip ? The rose ? The mus' 

 tard? Pea? Elder? Kalmia? Harebell? Whortleberry? Morn- 

 ing-glory ? Petunia ? Honey-suckle ? The florets of dandelion ? 

 The sage? Cypripedium? 



485. What is pappus? Its etymology? Give examples. 

 Describe figs. 328, 329, 330, 331, 332, 333. 



487. In the flower of bog-rush, what represents the calyx (fig. 334) ? 



488. In Carex, what represents the perianth (fig. 335) ? 



489. In the grasses, what organs replace the perianth ? 



In fig. 195, show the spikelet ? The glumes ? The pales ? 



490. Define the term caducous. Deciduous. Mareseent. Persistent. 



CHAPTER XII. 



491. In what position are the essential organs found ? 

 How may they be known from the envelopes ? 



492. Mention and describe each of the three parts of the stamen. 

 Which of these parts is not essential ? 



W T hat is the collective name of the stamens? (Fig. 336.) 



In fig. 336, which is the andrcecium ? Which the gynceeium ? 



In fig. 338, which is filament? Anther? Pollen? Connectile? 



493. Describe the filament. 



494. Please describe the anther. Connectile. Dehiscence. 



495. When is the anther versatile ? Adnate ? Innate ? 



496. When is the dehiscence valvular ? Porous ? Opercular ? 



497. When is the anther introrse ? Extrorse ? 

 Describe figs. 339, 340, 341, 342, 343, 344. 



498. At what points may the anther he appendaged ? Describe figs. 849, 350, 



499. When is the anther dimidiate ? Describe figs. 354, 351. 

 Point out the stamens and pistils in figs. 355, 356, 357, 358, 359 

 Describe figs. 360, 361. 



502. What are staminodia ? Where do we find them ? 

 Describe fig. 372, and show the staminodia. 



503. As to number what is definite? Indefinite? Monandrous? Dian- 



drous? Triandrous? Pentandrous, etc. ? 

 504 As to position what is hypogynous ? Perigynous, etc. 



505. As to comparative length, what is didynamous? Tetradynamous? 



506. As to the union of stamens, what is monadelphous ? DiadelphousZ 



Polyadelphous ? Syngenesious ? 



507. As to absence, how is a plant rendered monoecious? Dioecious? 

 How are the flowers in a polygamous species? ( 421.) 



508. What is the pollen ? Its microscopic appearance ? 

 Describe figs. 362, 363, 364, 365, 366. 



509. Describe particularly a grain of pollen. 



510. How does pollinia differ from pollen ? 



511. Position of the gynoecium ? 



How is the gynceeium regularly constituted ? 



