Xll QUESTIONS ON 



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



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 inonopetalous flowers, what seven forms ? 

 Of irregular inonopetalous, 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. 338, 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. Marescent. 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 ? 



What is the collective name of the stamens ? (Fig. 33G.) 



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



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 be appenda;ed? Describe figs. 349, 350. 



499. When is the anther dimidiate? Describe figs. 3.54, 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 ? Diadelphous? 



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 gyncecium regularly constituted ? 



