ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 493 



such as the peristome, the central strand, etc., for then the result is apt 

 to be too artificial. 3. If, however, the sum total of the characters is 

 considered, then Pt. decipiens is at once seen to be a Lescursea, Ptychodium 

 affine is a form of Pt. plicatum, while Pt. Pfundtneri and Pt. oligocladurr. 

 are near allies of Pseudoleshea atrovirens. 4. The relations of Lescursea 

 saxicola and L. decipiens to one another, as well as of Pseudoleslcea oli</»- 

 cladum and Ps. Pfundtneri to one another and to Ps. atrovirens are not 

 yet explained. For this end they must be studied in their habitats. 



Cratoneuron and Hygramblystegium.* — W. Monkemeyer publishes 

 his researches on Cratoneuron and Hygramblystegium. He recalls that 

 V. F. Brotherus in Engler's Planzenfamilien kept Cratoneuron distinct 

 from Hygramblystegium, on account of the numerous polymorphous 

 paraphyllia and the secund falcate leaves with long deep plicae of the 

 former species, as contrasted with the almost entire absence of para- 

 phyllia (except in H.filicinum) and smooth leaves of Hygramblystegium. 

 Monkemeyer disapproves of the inclusion of H.filicinum in Hygram- 

 blystegium, and very fully states his reasons for transferring it to Cra- 

 toneuron. Also as to Hygramblystegium commutatum, he places it for 

 similar reasons in Cratoneuron. He gives a full account of the varieties 

 and forms of both these species, and discusses various other species. 



Hygrohypnum ochraceuin.f — M. Spindler discusses the great 

 variability of Hygrohypnum ochraceum, a widely distributed species. 

 Limpricht ascribed to it four varieties. Spindler adds another, var. 

 obtusifolium. He says that the species is extraordinarily capable of 

 adaptation to environment, and hence is very rich in forms. In it must 

 be included H. simpUcinerve (Lindb.), as has been indicated recently by 

 L. Loeske. 



Buxbaumia viridis.J — I. Grorffy publishes a third article on bryo- 

 logical rarities, and describes some diseased specimens of Buxbaumia 

 viridis (B. indusiata), collected by him on rotting fir-trunks at certain 

 places in the Hohen Tatra. The specimens were conspicuous owing to 

 the fungal spots on the deformed capsules. He gives an account of the 

 fungus {Cdadosporium her bar inn) and of the manner in which it attacks 

 the moss. He enumerates twenty different localities at which the moss 

 has now been found in the Hohen Tatra, where previously it had been 

 regarded as exceedmsdv rare. 



European HepaticasJ— K. Miiller publishes another instalment of 

 his monograph of Die Lebermoose in Rabeuhorst's Kryptogamen-flora, 

 and brings to a close the first volume of his work. He gives an account 

 of Harpanthus (2 species), Geocalyx (1), and Saccogyna (1), and adds a 

 chapter on the development of the fruit-sac (marsupium) in the Junger- 

 mannieae, using the following genera in illustration : — Schistochila, AH- 

 cularia geoscypha, Tylimanthus, Mesoptychia, Balantiopsis, Galypogeia, 

 Isotaehis. There are three types of fruit-sac: 1. Where the embryo 

 bores its way down into the nutrient tissue {Tylimanthus type). 2. 



* Hedwigia, 1. (1911) pp. 263-78. 



t Hedwigia, 1. (1911) pp. 181-1 (1 pi.). 



+ Hedwigia, 1. (1911) pp. 287-93. 



§ Leipzig : Kummer, 1911, lief. 14, pp. vii. and 833-71 (figs. 358-63). 



Aug. 16th, 1911 2 k 



