cniETOPnoKA. 127 



In English Botany the filaments arc figured without cilia. 

 Kiitzlns: also fii^urcs them in the same manner : if this 

 character be permanent, then is the species doubtless a 

 good one. 



. The following observations, taken from the " Flora " for 

 1842, p. 513., were inserted in the " Annals" for June, 

 1843 : — 



" The fruit of Chcetophora appears hitherto to have been observed 

 only by Mr. Berkeley, who communicated specimens to Captain Car- 

 michael, who made a drawing from them ; which, with his other manu- 

 scripts, is in the hands of Sir W. J. Hooker. Mr. Berkeley also pub- 

 lished a figure of it in his " Gleanings of British Algae." Dr. Mliller of 

 Detmold has been so fortunate as to meet with similar fruit in Chce- 

 tophora tuberculosa^ and has given figures of it in the place cited above. 

 He has made, moreover, a very curious observation, viz. that the fruit is 

 accompanied by, and at length connate with, a red globule of a similar form 

 but smaller size, which he considers as the male fructification. As the 

 female capsule advances to maturity, the male approaches it, becomes 

 elongated, and at length is united with it, emptying the pollen globules 

 into the female fruit. This process being accomplished, it falls off. 



" Whatever may be thought of this, his account of the developement 

 of the spores formed within the capsule, which are about five in number, 

 and disposed around an aperture occasioned probably by the pressure of 

 the male capsule, is not less wonderful. From each of the seeds a hyaline 

 thread is developed, formed of the globules which press forward from the 

 inside of the seed ; this at length becomes green, and consists of a very 

 tender hyaline tube filled with a moniliform row of globules. Finally, 

 the uppermost globule is elongated into a new tube, which is of a paler 

 green than the rest of the thread. The capsule is now no longer visible, 

 and the whole resembles a Rivularia, which soon assumes the form of 

 Chcetophora tuberculosa. 



" The above observations are at least curious, and, if there has been no 

 error, are of much importance. We recommend them to the consider- 

 ation of some of our practical algologists, hoping that they may be able 

 to throw some light upon the matter." 



4. Chcetophora elegans A^, 



Plate IX. Figs. 3, 4. 



Cha7\ Mucous matrix subghhose, or lohed, rather solid, 

 green. Filaments subdichotomous. ^2im\^\^. fastigiate, the 

 apices produced beyond the gelatine and setigerous. 



Batrachospermum intricatum Vauch. Hist, des Conf. d'Eau 

 douce, p. 117. pi. xii. figs. 2, 3. C. elegans Harvey, 



t> 



