THE STAMENS, OR ANDRECIUM. 



101 



345 846 847 343 349 350 351 



852 353 854 



Peculiar forms of stamens. 845, Pyrola rotundifolia ; p, dehiscence by pores at top. 850 

 Vaccinium uliginosum ; p, dehiscence. 347, Berberis aquifolium, anthers opening (346) by 

 valves upward. 348, Anther of Violet, introrse, with an appendage at top. 349, Oleander, sagit- 

 tate, appendaged. 354, Catalpa, lobes of anther separated. 351, Sage, lobes of anther widely 

 separated, on stipes ; &, barren lobe without pollen. 352, Malva, anther 1-celled. 353, Ephedra 

 (after Peyer), anther 4-eelled. 



500. THE CELLS OF THE ANTHERS are at first commonly four, all 

 parallel, becoming two only at maturity. In some plants the four are 

 retained, as in the anthers of Ephedra. (353.) In others, as mallows, 

 all the cells coalesce into one. (352.) 



501. APPENDAGES of many kinds distinguish the stamens of different species. 

 In the Ericacese there are horns, spurs, tails, queues, etc. In onions and garlic tho 

 filament is 2 or 3-forked. bearing the anther on one of the tips. Sometimes a pair 

 of appendages appear at base, as if stipulate. It is often conspicuously clothed with 

 hairs, as in Tradescantia, 



356 853 360 861 



Essential organs. 355, Rhododendron, five stamens (s), one pistil (p), oblique or slightly ir- 

 regular. 357, Flower of ^Esculus (Buckeye), regular, 5-toothed calyx (c), very irregular 4-pe- 

 taled corolla, seven stamens unequal, one style (s). 359, Flower of Hydrastis ; t, sepals decidu- 

 ous. 860, Same, showing the distinct pistils and one stamen remaining. 361, Anemone thalic- 

 troides, the gynreciutn of distinct, ribbed achenia. 856, Trillium, six stamens (*), three pistil! 

 (p). 358, Staphylea trifolia. 



