312 



PodostemacecE IIL Eug. Warming, (Kong. Danske Videnska- 

 bernes Selskabs Skrifter, (VI.) iv. 445-514; twelve plates. 

 The third of these elaborate papers, describing results of in- 

 vestigations into the morphology of this obscure order of plants, 

 has recently come to hand. The diagnoses and minute descrip- 

 tions are in Danish and Latin, and there is a resume and expla- 

 nation of the plates — on which all the species mentioned are 

 illustrated — in French. Podostemon Millleri, P^ Schenckii, P. 

 Galvonis, Mniopsis Saldanhana, M. Gla^ioviana and Ltgea Gla- 

 ziovii^ are all new species from Brazil, and there are described as 

 well P. distichtis (Cham.), Warm.; P. siihidattts, Gardn., Apina- 

 gia Gardneriana, Tul, A. Riedelii (Bong.), Warm., Lophogyne 

 aculifera, Tul. and Wedd. and Mourera aspera (Bong.), Tul 

 There is a discussion of the place' of the order in the system and 

 the position formerly advanced, that it is to be joined with the 

 Saxifrageai, is maintained, differing: in this from M, Baillon, who 



refers it to the Caryophylleae. N. L. B. 



Polypodinm — A new species from Jamaica. J. G. Baker, 



(Journ. Bot xxvii, 270). 



Description of P. Fawcettii, from the higher mountains oi 

 the island. 

 Pota^nogeton Zizii — The Synoiiomy of, Arthur Bennett. (Journ. 



Bot. xxvH. 263-265). 

 Potcntilla — Ueber Eine Netie afts Mittelainerika. Karl Fritsch. 



(Engler's Bot. Jahrb. ii. 314-317)- 



A new species, P, heterosepala, with two varieties, Giiatcjna- 



ieusis and Mexicana, are described. 



Scnega-Wurzel—Uebcr Falsche, J, M. Maisch. (Pharm. Rundsch. 



vii. 236-238). 



Our pharmaceutical friends appear to be in trouble over the 

 substitution of some other species of Polygala for the P* Senega 

 of commerce. 

 Temperature of Trees — Observatiojis on the. H. L. Russelh 



(Bot. Gaz. xiv, 216-222, PL xviii). 



In this article the author gives an account of the results ob- 

 tained by boring holes Into several deciduous and evergreen 

 trees and noting tlie temperature of the interiors. Comparisons 

 were made between different species, between individuals of the 



