Floristik, Geographie, Systematik etc. 239 



apparently connected with excessive transpiration, which causes the 

 plants to lose more water than they absorb. Trelease. 



Burnham, S. H., The flora oflndian Lodderand vicinity: 



togetherwithdescriptivenoteson thescenery. (Torreya. 

 XVIIL p. 101 — 116. f. 1—5. June 1918; p. 127-149. f. 6— 9. July 

 1918.) 



Contains as new: Lecanora cerina siderites [Placodium Tuckerm.)'. 



Trelease. 



Campbell, D. H., The derivation of the tloraof Hawaii. 



(Leland Stanford Junior University Publications: University Se- 

 ries. 34 pp. 1919.) 



"The evidence furnished by the existing fauna and flora is 

 very strongly in favor of the view that the Hawaiian Archipelago 

 represents the remains of the northern extension of some large 

 land mass, connected quite closely with the lands of the Southern 

 Pacific." Trelease. 



Candolle, C. De, Begoniaceae centrali-americanae et ecua- 

 dorenses. (Smithsonian Mise. Coli. LXIX. N° 12 = Publication 

 2533. Apr. 9, 1919.) 



18 new species, of which 14 are from Panama: Begonia Kel- 

 lermanii, B. fissurarum (B. leptopJiylla C. DC), B. stenoptera, B. 

 garagarana, B. brevieyma, B. mucvcnistipula , B. avana, B. ma- 

 meiana, B. villipetiolata , B. cilibracteola , B. leptopoda, B. pubipedi- 

 cella, B. serratifolia , B. chiriqiiina, B. chepoensis , B. caudilimba, B. 

 udisilvestris , and B. pareifolia. Trelease. 



Chamberlain, C. J., The living cycads. (Chicago, The Univer- 

 sity of Chicago Press. 12°. XIV, 172 pp. f. 1—91. 1919.) 



Three main divisions deal with distribution, general appearance 

 and field environment; the life history; and the phylogeny of cycads. 



Trelease. 



Clokey, J. W., Carex notes. (Rhodora. XXI. p. 83— 85. Apr. 1919.) 



Contains as new: Carex arapaboensis, X C- subimpressa, and 

 C. ti'ibuloides saneamonensis. Trelease. 



Coßkerell, T. D. A., A new hybrid sunflower. (Torreya. 

 XVIII. p. 11 — 14. Jan. 1918.) 



Helianthus annuus X petiolaris. Trelease. 



Cockerell, T. D. A., Notes on Lycaste. (Torreya. XIX p. 10—12. 

 Jan. 1919.) 



Contained as new: Lycaste alba (L. alba of most writers). 



Treleasei 



