﻿222 ARTICLES IN JOURNALS. 



The extensive critical knowledge of the genus possessed hy Prof. 

 Crepin renders his remarks and suggestions of great value, and 

 his help would be of the utmost service to any botanist under- 

 taking the arduous task of writing a monograph of the British 

 representatives of this difficult genus ; but it must not be assumed 

 that a mere collecting of specimens and sending them for deter- 

 mination to a foreign authority, however great, will enable anyone 

 to deal satisfactorily with the subject. In such extremely critical 

 genera the variation is so different in different countries, that it 

 needs a study of many years, and an intimate acquaintance with 

 the living plants throughout the country, to acquire the necessary 

 judgment for such a task. 



H. & J. Groves. 



ARTICLES IN JOURNALS. 

 Bot. Cmtralblatt (No. 23).— H. Klebahn, • Ueber Rhytisma acer- 



Bot. Gazette (May 15). — E. J. Hill, ' Querent Lenna: — E. W. 

 Olive, * Histology of Pontederiacece ' (1 plate). — W. A. Setchell, 

 ' Notes on Ustilaginea ' (1 plate). — P. C. Newcome, ' Influence of 

 mechanical resistance on life-period of cells.' 



Bot. Zeitung (May 16). — P. Kossowitsch, « Untersuchungen 

 iiber die Frage der die Algenfreien Stickstoff fixiren.' 



Bull. Soc. Bot. France (xli. 3 : May) . Hue, « Lichens des 



forets de Saint-Germain-en-Laye et de Marly.' — B. Martin. ' Scle- 

 ranthus uncinatus Schur & S. polycarpos L.' — H. de Vilmorin, 

 ' Salpiglossis sinuata sans corolle.' — A. Chatin, ' Valeur de la 

 localisation des organes.' 



Bull. Torrey Bot. Club (May 25). — E. G. Britten, 'Revision of 

 Physcomitrium ' (7 plates). — C. L. Pollard, ' Cassia in N. America.' 

 — G. F. Atkinson, ' Revision of linosporous species of N. American 

 graminicolous Hypocreacea? — H. Schrenk, 1 Teratological Notes ' 

 (1 plate). — F. L. Scribner, ' New or noteworthy Grasses.' 



Erythea (June). — E. L. Greene, « Observations on Composites.^ 

 M. A. Howe, 'Californian Bryophytes' (2 plates). — J. B. Davy, 

 Diplacus speewsus, sp.n. — J. G. Lemmon, Pinus Apacheca, sp. n. 

 (1 plate). 



Gardeners' Chronicle (May 26). — Myrosma nana Baker, sp. n.— 

 C. T. Druery, 'An aposporous Hart's-tongue.' — (June 2). Steno- 



& Kranzl., Bolbophyllum Hookerianum Wendl. & Kranzl., spp. nn. 

 —(June 9). Tiilipa Sprengeri Baker, sp. n, 



Journal de Botanique (May 16).— N. Patouillard, 'Les Terfez de 

 la Tunisie.' — J. Vesque, ' La tribu des Clusiees.' 



Journ. Linn. Soc. (xxvi, No. 177 : June 13). — F. B. Forbes & 

 W. B. Hemsley, 'Index Florae Sinensis' (ThymeUa—Urticacea). 



