19 



phylliitn^ Bonne^naisonia, Chofeocolax^ Ptiloia and Callithamnion. 

 The follovyinc^ are \\^\v genera, each with a single new species : 

 Chroa^ Mcrejiia^ Straggaria, Collected during the German 

 Transit of Venus Expedition, 1 882-^83. 



Algen 



H, 



M. Mobius. (Hed\vijj;ia, xxviii. 309-347; t. X. and XI). 64 

 species (including one Chara) are enumerated and novelties de- 

 scribed in the following genera: Spirocoleiis ; Entophysay — a new 

 genus, found in the tissues of Chara Horiiemanni; Acetabularia; 



Dictyoptcris; Gracilla7'ia. 



Bahamas, — The Botany of the, Chas. S. Dolley. (Proc. 



Acad. Nat. Sci. Phila., 130-134. 1889). 



On the occasion of presenting for publication a paper entitled 

 " A Provisional List of the Plants of the Bahama Islands/' by John 

 Gardiner and L. J. K. Brace, which we shall liope to notice in 

 these columns as soon as it is issued, Professor Dolley remarked 

 on the general character of the Bahaman Flora and its relation to 

 that of Florida and Bermuda. In this connection we would 

 state that Dr. and Mrs. Northrop are now in Bahama, prepared 

 and equipped to obtain extensive collections of both animals and 

 plants. The club may therefore anticipate hearing some account 

 of this exceedingly interesting flora at no very distant day. 



Bald Cypress — The, W. I\ Wilson. (Forest Leaves, 11. 1 10, 

 III, illustrated). This little article includes a discussion upon 

 the nature and functions of '* knees/' and the figure of the tree, 

 {Taxodiuin distichnin) is an exceedingly good one, reproduced 

 from one of Dr. Rothrock's photographs. The theory that the 

 knees are respiratory organs is maintained. 



Cochliostema Jacobiannm. (Garden, xxxvi. 477, illustrated). 



Color Character — The. Edward L. Greene (Pittonia, ii. 35- 



46; advance sheets). 



Professor Greene shows how stable a character color is in cer- 



tain great groups of plants, and does not approve of naming 



albino forms. 



Contributions Towards a List of the Fauna and Flora of Wet 

 Mountain Valley, Colorado, — 1 1. T. D. A. Cockerell. West Am. 

 Sci. vi. 134-136). 



The monocotyledonous plants of the region are here enum- 

 erated. 



