314 Bryophyten. — Pteridophyten. 



sammenhang! Hypnum Rotae ist Wasserform von H. exannulatum. 

 Hypnum fallax ist die Quellwasserform von H. ßlicinum. Sehr stark 

 wirkt Quellwasser auf Hypnum commutatum ein durch Verlänge- 

 rung der Blätter oder durch Reduktion, besonders bewirkt rasch 

 fliessendes Wasser ausserdem noch eine Verstärkung der Blattrippe. 

 Hygroamblystegium crassinervium ist wahrscheinlich nur eine Was- 

 serform zu H. commutatum, Dichodontium flavescens ist Wasserform 

 zu D. pellucidum. Ausser diesen Feststellungen finden sich noch 

 Bemerkungen über Wasserformen oder vermutete Wasserformen 

 zu folgenden Arten: Catharinea undulata, Polytrichum gracile, P. 

 Swartsii, Rhynchostegium rusciforme, Amblystegium riparium, Bra- 



chythecium rivulare, Hypnum irrigatum > facatum, H. Schultsei, 



H. giganteum, Aulacomium palustre, Plagiopus Oederi, Neckera 

 crispa und Hylocomium splendens. Letztere Arten werden besonders 

 durch tropfendes Wasser morphologisch verändert und bilden 

 sogenannte Triefformen. Boas (Weihenstephan). 



Copeland, E. B., Hawaiian ferns collected byj. F. Rock. 

 (Philippine Journ. Science. C. Botany. XL 4. p. 171—173. 1916.) 



This paper contains some short notes on Elaphoglossum hirtunt 

 (Sw.) C. Chr. and several new names: Athyrium pseudoarboreum 

 (Asplenmm arboreum Hilleb. non Willd.). Sadleria rigida. Pteris 

 Hillebrandii (P. irregularis Kaulf. var. linearis Hilleb.). Elaphoglossum 

 Rockii, differs from E. crassicaule Copel. in its dense mass of brow- 

 nish paleae, less stout stipe, and less horizontal venation. Polypo- 

 dium Rockii. Jongmans. 



Copeland, E. B., Miscellaneous new ferns. (Philippine Journ. 

 Sc. C. Bot. XL 1. p. 39-41. 1916.) 



Athyrium Ridleyi (Pahang); Microlepia Ridleyi (Perak), differs 

 from M. platyphylla (Don) J. Sm. in texture, inconspicuous veins, 

 hairy indusia, and most essentially in the form of the indusium. 

 Elaphoglossum parvum (China), like a very small E. decurrens, but 

 utterly different paleae. E. Macgregori (Luzon), most nearly related 

 to E. callifolium (Bl.) Moore, but very much smaller and with al- 

 most sessile sterile fronds. E. basilanicum (Basilan) closely related 

 to E. decurrens, but the sterile fronds are narrower and not quite 

 so coriaceous, the denser scales along costa and margin are larger 

 and less completely dissected; all fronds are decidedly scaly. L. 

 bipinnata (Samar), differs from L. articulata (J. Sm.) Copel. most 

 evidently by the much narrower pinnules. The paper further con- 

 tains notes on Angiopteris madagascariensis De Vriese and Lygo- 

 dium Versteegii Christ. Jongmans. 



Pfeiffer, N. E., The prothallia of Ophioglossum vulgatum. 

 (Botan. Gazette. LXI. p. 518—522. 4 Fig. 1916.) 



These prothallia of Ophioglossum vulgatum were found at moist 

 places in the southeast outskirts of Chicago. They completely 

 agree with those found and described by Bruchmann. The gene- 

 ral topography does not differ from that figured by Bruchmann, 

 except that there is usually only one cortical layer free from fungi. 



Jongmans. 



