— 66 — 



upper surfaces of the leaves, and number of spines on the lower surfaces. While 

 doubtless some of these characters are influenced by external conditions, it seems 

 not unUkely that the plants in question may represent distinct races, all of which, 

 however, seem to fall within the limits of C. angustata Brid., as at present defined; 

 although since this species intergrades with C. undulata Web. & Mohr, it is pos- 

 sible that some of the forms observed should be referred to the latter species." 



O. E. J. 



Hermann Edward Hasse — Lichenist. — -Dr. Bruce Fink^ has contributed 

 to the September, 1916, number of Mycologia an excellent brief account of the 

 life and botanical activities of our late lamented Curator of Lichens. Dr. Fink 

 speaks of him as "the man who has added, it seems, the largest number of lichens 

 to our North American flora, through his own collecting, since the days of Tuck- 

 erman." About twenty-five years of his collecting in southern California added 

 about seventy-five new species, the earlier ones being named mainly by Stizen- 

 berger, Nylander, or Zahlbruckner, the later ones mainly by Hasse himself. 

 Fink notes that Mr. John I. Kane presented to the New York Botanical Garden, 

 in 1906, about 3000 species and many duplicates from Hasse's herbarium. Re- 

 cently a large collection of lichens was purchased from Mrs. Hasse for the Cryp- 

 togamic Herbarium at Harvard University, this collection probably comprising 

 the specimens used in the preparation of Hasse's Lichen Flora of Southern Cali- 

 fornia. Our readers will recall also that our present Curator of Lichens, Mr. 

 Plitt, is busily working over a large collection of duplicates from the lichen her- 

 barium given to the SuUivant Moss Society by Mrs. Hasse and numbering sev- 

 eral thousands of specimens, and that sets of these lichens from the Lichen Her- 

 barium of the Society are now being issued to subscribers. Dr. Fink's article 

 includes a list of thirty-two published papers on lichens written by Dr. Hasse. 

 This biography and the one written by Plitt, *^ for the Bryologist together con- 

 stitute a valuable record of the life and work of one of America's foremost lichen- 

 ists. 



O. E. J. 



The Vegetation of Connecticut. — In a former number of the Bryologist'' 

 attention has been called to numbers I-IV of Nichols's "The Vegetation of Con- 

 necticut." Number V is entitled "Plant Societies along Rivers and Streams"^ 

 and the author considers in considerable detail the changes in vegetation that 

 occur as a valley passes through the stages from youth to old age. 



The Rock Ravine is first considered and, under the heading of "The Bryo- 

 phytic Flora of Rock Ravines" lists are given: 



{a) The hydrophytic species appearing on the rocky sides and bottom of 

 the stream and on spray-dashed rocks at waterfalls: Chiloscyphus rivularis, 



^ Fink, Bruce. Hermann Edward Hasse — Lichenist. Mycologia 8: 243-248. Sept., 1916. 

 ^ Plitt, Charles C. Dr. Hermann Edward Hasse. Bryologist 19: 30-33- March, 1916. 

 '^Bryologist 19: 49-50. May, 1916. 



8 Nichols, George E. The Vegetation of Connecticut. Bull. Torn Bot. Club 43: 235-264. 

 May, 1916. 



