No. 2, June, 1921] MORPHOLOGY AND TAXONOMY, ALGAE 179 



var. Hysirix, forma condensata Holmes are described as new. Descriptions of some less well 

 known species are given. In the section on ecology the author discusses the algal ecology of 

 Guernsey under 7 headings: (1) Physical position of the island; (2) tides; (3) currents; (4) 

 nature of the substratum; (5) configuration of the coast; (6) salinity; and (7) temperature. 

 Three main regions are recognized: Upper littoral, middle littoral and sub-littoral. These 

 are subdivided into zones to the extent of 15 in all. The zones are mostly named from their 

 most characteristic plant. A comparison of the Guernsey algal flora with that of the neigh- 

 boring coast is made. An account of the uses made of algae concludes the paper. — K. M. 

 Wiegand. 



1241. Markle, M. S. Some abnormalities in plant structure. Proc. Indiana Acad. Sci 

 1918: 117-124. Fig. 1-9. 1920.— See Bot. Absts. 7, Entry 1066. 



1242. Paulson, R., and S. Hastings. The relation between the alga and fungus of a 

 lichen. Jour. Linn. Sec. London Bot. 44:497-506, PL 21-22. 1920.— See Bot. Absts. 7, 

 Entry 1994, 



1243. Pease, Vinnie A. Taxonomy and morphology of the ligulate species of the genus 

 Desmarestia. Publ. Puget Sound Biol. Sta. 2: 313-367. PI. 54-63. 1920.— One new species 

 is erected, Desmarestia herbacea; and another announced., D. latissima Setchell & Gardner. 

 There is a detailed discussion of the limits of these, and their relation to D. tabacoides Oka- 

 mura; also a detailed discussion of the limits and history of D. ligulata (Lightfoot) Lamour- 

 oux and D. herbacea (Turner) Lamouroux. Details of the morphology of these 4 species clear 

 up some fine points in their development and structure. Not finding reproduction the writer 

 seems to doubt whether Okamura found it in D. tabacoides, and states that it may have been 

 reproduction in a species of Phycocelis growing upon the Desmarestia. — T. C. Frye. 



1244. PiLGEK, R. Algae Mildbraedianae Annabonenses. Bot. Jahrb. 57: 1-14. Fig. 

 1-34. 1920. — This is a list of the algae collected by Dr. J. Mildbraed in 1911 on Annobon, 

 the smallest of the Guinea Islands. Notes are given on distribution and critical features of 

 morphology. Thirty-three species and varieties are included in the list of which the fol- 

 lowing are described as new: Bryopsis densa, Struvea multipartita, Scinaia furcellata (Turner) 

 Biv. var. constricta, Caulacanthus ustulatus (Mert.) Kiitz. var. fastigiatus (Kiitz) Pilger n. 

 comb. (C. fastigiatus Kiitz), Laurencia brachyclados, Herposiphonia brachyclados, Lopho- 

 siphonia adhaerens, Callithamnion Mildbraedii, Ceramium leptosiphon. — K. M. Wiegand. 



1245. Puymaly, a. de. Sur une petite algue verte aerophile (Prasiola leprosa Kiitz.). 

 [A small aerophilous alga (Prasiola leprosa Kiitz.).] Compt. Rend. Acad. Sci. Paris 171: 

 189-192. 1920. — On the basis of the structure of the chromatophore and the normal reproduc- 

 tion by aplanospores it seems desirable to transfer the form refered to by Petersen as 

 Pleurococcus calcarius to the species named in the title. — C. H . & W . K. Farr. 



1246. Raineri, R. Corallinacee del litorale tripolitano. [Corallinaceae of the Tripoli- 

 tan littoral.] Atti R. Accad. Lincei Roma Rendiconti 01. Sci. Fis. Mat. e Nat. V, 29^: 

 282-288, 313-318. 1920.— The following algae collected by C. F. Parona in 1912-13 were 

 studied and described after the methods ofMme.LEMOiXE: Lithothamnium crispatum Haucki, 

 L. Haucki Rothpeltz, L. Lemormandi Areschoug, L. Philippii Foslie, L. fruticulosum 

 (Kiitz.) Foslie, Lithophyllum expansum Philippi, L. Byssoides Lamark, L. decussatum'EUia 

 and Solander, and Melobesia Lejolisii Rosan. — F. M. Blodgett. 



1247. Raineri, R. Corallinacee del litorale tripolitano. Nota III. [The Corallinaceae 

 of the Tripolitan littoral.] Atti R. Accad. Lincei Roma Rendiconti 01. Sci. Fis. Mat. e Nat. 

 V, 291 : 356-358. 1920. — Oontinuing from previous articles he describes the following 

 species of calcareous algae collected by Prof. Parona: Corallina officinalis Linn., C. medi- 

 terranea Areschoug, and Peyssonelia rubra Grey. The first 2 are new to the Tripolitan 

 littoral,— F. M, Blodgett. 



