VARIETIES OF ANTHERS. 



25 



The Situation of the filaments, is either opposite to the leaves 

 or segments of the calyx, as in URTiCA;...or alternate, with 

 them, as in Eueagnus. In monopeialous flowers they are insert- 

 ed into the corolla ; but scarce ever in polypetalous. In the class 

 Icosandria* they are always inserted in the calyx, as they are 

 also in Epilobium, Oenothera, Jussi^ea, Ludwigia, Oldenlan- 

 dia, Isnarda, Ammania, Peplis, Lythrum, Glaux, and Rhexia; 

 and in some ApETALOUsf flowers, as in Elteagnus ; but it is 

 more common for them to be inserted into the receptacle, like the 

 calyx and corolla. 



VARIATIONS OF THE ANTHERS. 



The Number of the anthers is either a single one to each fila- 

 ment, as in the generality of plants ;...one common to three, as 

 in Cucurbita;,..o??.£ to five, as in the whole class Syngenesia% ; 

 two to each filament, as in Mercurialis;...^?^ to each, as in 

 Fumaria \...five to three filaments, as in Bryonia or jive to 

 each, -a* in Theobroma. 



plants that have single antherae to the filaments, some 

 of the antherae are wanting; thus one is wanting in Cleonia and 

 Martynia ;...:zvo in Pinguicula and Verbena three in Gra- 

 tiola, and in some Bignonias and Geraniums ;...four in Curcu- 

 ma;.. .and five in Fentapetes and some Geraniums. 



The number of cells that contain the pollen, is either one, 

 as in Mercurialis;...^-o, as in Helleborus three, as in Or- 

 chis or four, as in Fritillaria. 



The Figure of the antherae is either oblong, as in Lilium;... 

 globose, as in Mercurialis ;...sagz7tate, arrow-shaped, asinCRO* 

 cus ;...angulate, cornered, as in Tulipa or cornute, horned, as 

 in Hamamelis, Erica, Vaccinium, and Pyrola. 



They burst either on the side, as in Leucoium, and most 

 flowers ;...on the apex, as in Galanthus and Kiggellaria ; ... or 



* See Part H- Cha P- XV, f Without petals. % See Part II. Chap. XXIL 



