78 SELECTED NOTES FROM 



a perfect plant, with roots, stem, leaves, and fruit. The change is 

 far greater and more wonderful than in the lower forms of plant- 

 life, where the cells increase by division, and the perfect plant is 

 only unicellular. 



The specific name, Afidrogymitn, was given in error, it being 

 formerly supposed that the gemmae were the male flowers. 



W. N. Cheesman. 



Aulacomnium Androgynum.— This moss is described as having 

 leaves "irregularly toothed at the apex" (Berkeley); "all denticu- 

 late at the apex " (Hobkirk), which I do not observe in Mr. 

 Cheesman's specimen, except on two leaves, and that only 

 obversely, even with |-inch o.g. Is the " toothing " of the leaves 

 always so very slight ? Instead of each gemma being " a single 

 cell," they appear to me to be as described by Berkeley in the 

 Handbook of Brit. Mosses, p. 206 :— " Broadly fusiform, apiculate, 

 and 3 — 4 septate." W. H. Lett. 



Asterina. — Is a genus of Micro-fungi. One species, A. Babhig- 

 tonii, grows on living box leaves : — " Perithecia semiorbicular, 

 seated on a byssoid— /.^., silky — mycelium, mouthless, at length 

 splitting irregularly. Asci short, mostly sub-globose." 



C. H. Waddell. 



Celsia, Stamens of. — The genus Celsia belongs to the Solanacce, 

 and comes very near to the Verhascum (Mulleins), of which we 

 have some wild examples in this country, all of which have hairy 

 stamens. Several of the genus are natives of the Mediterranean 

 district of S. Europe and N. Africa. The vase-like hairs at the 

 base of the flower will not be overlooked. When the flower is 

 quite fresh, the numerous trumpet-like hairs are very beautiful. 



J. ROOKLEDGE. 



Ammonites plavicostatus.— This is, if I remember rightly, a 

 Lias species. The Ammonites, a genus of chambered shells, found 

 only in the secondary rocks, but exceedingly abundant in some of 

 them, are allied to the existing Nauiihis, but differ from it by 

 having the sutures between the several segments of the shell foli- 

 ated like those of the human skull, whereas in the Nautilus they 

 are straight. In the Nautilus, too, there is a single siphuncle or 

 tube connecting the chambers which pierces the septa near the 



