486 



ORDINARY MONTHLY MEETING. 



Skptember 29th, 1915. 



Mr. A. G. Hamilton, President, in the Chair. 



The Donations and Exchanges received since the previous 

 Monthly Meeting (25th August, 1915), amounting to 8 Vols., 78 

 Parts or Nos., 17 Bulletins, 2 Reports, and 3 Pamphlets, received 

 from 42 Societies, etc., and one private donor, were laid upon the 

 table. 



NOTES AND EXHIBITS. 



Mr. A. A. Hamilton exhibited specimens from the National 

 Herbarium, with notes thereon:— ^c»ro?im ledifolia Gay, (Hilltop; 

 E. Cheel; June, 1915) showing meiophylly of the calyx, corolla, 

 and androecium. This species has, normally, four sepals, four 

 petals, and eight stamens. In the example exhibited, one sepal, 

 one petal, and three stamens are suppressed. In many cases of 

 meiophylly, the regularity of the axial alternation of the floral 

 organs affected is disturbed, but, in this case, the whorls, though 

 reduced, retain their symmetry. The characteristic callosity at 

 the summit of the filaments is not produced. Dr. Masters 

 ("Vegetable Teratology," p.397), notes that meiophylly of the 

 calyx is less common (in dicotyledonous plants) than in the case 

 of either corolla or stamens. — Photographs of a triple cone of 

 Macrozamia Perowskiana Miq., grown in the Sydney Botanic 

 Gardens, illustrating syncarpy. Three cones are to be noted, 

 adhering by their axes, the central cone larger than the two 

 lateral ones, both of which exhibit a degree of curvature. The 

 line of divergence is marked by the size, and placentation of the 

 scales, those of the outer cones being much larger than those of 

 the central cone. No example of syncarpy is noted in the Family 

 Cycadem by Dr. Masters, in his work on "Vegetable Teratology." 



Cardiospermum Ilalicacahum Linn., (Petersham ; T. Steel ; 



March, 1911) showing multiplication of carpels. The fruit of 

 this plant is tri-carpellary, each carpel containing a single seed. 

 One example discloses an abortive attempt to form a fourth 



