552 Floristik und Systematik der Phanerogamen. 



BORNMÜLLER, J., Vierter Beitrag zur Kenntniss der 

 Gattung Dionysia. (Bull. herb. Boissier. T. V. 1905. 

 p. 261—263.) 



Description du Dionysia peduncularis spec. nov., trouve en Perse 

 par Th. Strauss. A. de Candolle. 



Brandegee, T. S., Plants from Sinaloa, Mexico. (Zoe. 

 V. August 19. 1905. p. 196—210. August 29, 1905. p. 211 

 —226.) 



Notes on the flora of a little known part of the western Mexican 

 coast, containing the foUowing new names: Erythea aculeata, Pitcairnia 

 monticola, Populus dimorpha, Cleotne Sinaloensis, Acacia crinita, Cal- 

 liandra nipestris, Bauhinia chlorantha, Krameria prostrata, Tephrosia 

 rhodantha, Desmodium chartaceurn, Rhyncosia rupicola, Heteropteris 

 arborescens, Janusia Mexicana, Biirsera collina, Polygala collina, P. 

 setifera, Sebastiana Mexicana, Croton jucundus, Jatropha vernicosa, 

 PhyUanthus evanescens, Euphorbia Cofradiana, E. Humayensis, E. Sina- 

 loensis, E. pediculifera inornata, Pedilanthus rubescens, Heliocarpus 

 glaber, Wissadula elongata, W. incana, Hibiscus violaceus, Malvaviscus 

 rivularis, Sida longijolia, Cuphea delicatula, C. Hnmayana, Miconia 

 saxicola, Ardisia scopulina, Metastelma cuneata, Melinia Mexicana, 

 Ipomoea crinita, I. Sinaloensis, I. megacarpa, Heliotropiiim saxatile, 

 Jacquemontia macrocephala, Cordia Pringlei Altatensis, Russelia fur- 

 furacea, Amphilophium purpureum, Houstonia parvula, Melampodium 

 canescens, M. geminatum, Gymnolomia auriculata, Bidens oligantha, 

 Perityle grandifolia, P. saxosa, Porophyllum quinqueflorum, Pechs pur- 

 purea, P. scabra and P. salina. Trelease. 



Broun, A. F., Some not es on the „S udd"-Fo rmation 

 of the Upper Nile. (Journal of the Linnean Society. 

 Vol. XXXVII. Botany 1905. No. 258. p. 51—58.) 



After a general description of the „Sudd"-formation the author pro- 

 ceeds to sketch out the process of its development. First by the inter- 

 lacing of the tubulär rhizomes of the chief Sudd plants (Cyperus Papy- 

 rus, Panicum pyramidale, Phragmites communis, Typha australis) 

 as they grow out on the surface of the shallow water, rafts 

 are formed, often of considerable thickness and buoyancy ; these 

 are further strengthened by twiners (e. g. Vitis ibuensis, Ipomoea rcptans), 

 while soil etc. which is gathered up, strengthen the whole structure. 

 Parts of the rafts become detached during high water or in a storni and 

 drift away, anchoring again in shallow places. Ambatch apparently only 

 appears after the rafts are formed, together with a number of other plants 

 (e. g. Hibiscus diversifolius and Melanthera Brownei), which are classed 

 as accessory Sudd-formers; it probably helps in fixing the rafts in one 

 place and thus forming firm land. F. E. Fritsch. 



Cajander, A. K., Beiträge zur Kenntniss der Entwicke- 



lung der europäischen Moore. (Fennia. 22. No. 3. 



Helsingfors 1905. 6 pp.) 



Die Untersuchung des Bernau er Moores am Chiemsee und des 

 Karolinenfelder Moores ergab folgende Unterschiede zwischen den 

 bayrischen Mooren und denjenigen von Süd-Lappland (vergleiche 

 Cajander, Ein Beitrag zur Entwickelungsgeschichte der nordfinnischen 

 Moore; Ref. Bot. Centralbl., 1905, I, p. 23): 



1. In den genannten bayerischen Mooren kommt keine regressive 

 Entwickelung vor, resp. sie ist nur in den kleinen mit Sphagnum 



