Floristik, Geographie, Systematik etc. 525 



Exolobus albomarginatus, Roulinia ligulata {Enslenia? ligulata Benth.), 

 Oxypetalum hiälense, Cyphornandra dendroidea, C. naranjilla, Caya- 

 ponia macrantha, Angurin magdalerxa, A. limonensis, Cyclanthera 

 langaei graciUhna, Elateriopsis Oerstedn {Cyclanthera Oerstedii Cogn.), 

 E. Oerstedii Biolleyi (C Oerstedii Biolleyi Cogn.), Frantzia n. gen. 

 {Cucurbitaceae) , with F. montana, F. Pittieri [Cyclanthera Pittieri 

 Cogn), F. Pittieri quinqiieloha (C. Pittieri quinqiieloba Cogn.), and 

 PolakoAvskia n. gen. {Cucurbitaceae) , with P. tacaco. Trelease. 



Rock, J. F., Some new Hawaiian plants. (Bull. Torr. bot. Cl. 

 XXXVII. p. 297—304. fig. 1—5. June 1910.) 



Pittosporum Hosmeri, Sideroxylon rhynchospernium, Lysiniachia 

 gliitinosa and Dubautia Waialealae. Trelease. 



Rydberg, P. A., Studies on the Rocky Mountain flora. XXII. 

 (Bull. Torr. bot. Cl. XXXVII. p. 313-335. June 1910.) 



Contains, as new: Antennaria acuta, Gnaphalium Williamsiij 

 Anaphalis angustifolia, Gymtioloniia linearis, G. ciliata, [G. hispida 

 ciliata Robins. & Greenm.), Othake sphacelatiun [Stevia sphacelata 

 Nutt.), O. tnacrloepis, Picradeniopsis Woodhousii {Achyropappus 

 WoodhoHsii Gray), Platyschkuhria desertorinn {Bahia desertorumj onts) 

 and Villanova dissecta {Amauria? dissecta Gray). Trelease. 



Shreve, F., M. A. Chrysler, F. H. Blodgett and F. W. Besley. 



The Plant Life of Maryland. (Volume III, Maryland Weather 

 Service. 533 pp. Baltimore 1910.) 



In this compendious volume, illustrated by 39 plates and 15 

 textfigures and maps, is given a discussion of the plant life of 

 Maryland and allied subjects, the interpretation of which is largely 

 dependent on the physiographic and climatic conditions which cha- 

 racterize the State. The introduction by Forrest Shreve considers 

 the climatology of the State under the headings temperature, humi- 

 dity, rainfall and wind, as such influence the Vegetation of the 

 State. Then the topography of the coastal zone, the midland zone 

 and the mountain zone together with shore line topography is con- 

 sidered. The mineralogy and soils of these several zones with a 

 bibliography concludes the first part. 



Part II b}'' Forrest Shreve is concerned with the floristic plant 

 geography of Maryland. Under the head of the coastal zone the 

 following captions are presented: the Strand, the salt marshes, the 

 pine barrens. In a similar thorough manner, the floristics of the 

 midland and mountainous parts of Maryland are given with a 

 bibliography. Part III by Shreve, Chrysler and Blodgett includes 

 in sectional treatment the ecological plant geography of Maryland. 

 Dr. Shreve presents the results of his field studies on the ecolo- 

 gical plant geography of Maryland's Coastal Zone, Eastern Shore 

 District, as concerned with the upland Vegetation, theswamp Vege- 

 tation, the marsh Vegetation, the aquatic und dune Strand Vegetation. 

 Dr. M. A. Chrysler gives the results of his investigation of the 

 Coastal Zone, Western Shore District under the following cate- 

 gories: topography and soils, upland and lowlandforests, cypress 

 swamps, freshmarshes, saltmarshes, peat bogs, Strand and plant of 



