The Botanical Society and Exchange Club,'
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- .f' -::~,:.:.' ~ .... ~-\"_---,-.~"I"""""-----"-'----- -- --- -','- - ~ -.~T"";:-:-' - , .' --"- --- --- -'~"-~.~.~~':-~'":""T' .. ~. - . .':~". '" ~ • ~. \' , I. • " THE BOTANICAL SOCIETY AND EXCHANGE CLUB,' ". ~ OF THE BRITISH ISLES. ", REPORT ,FOR 192 7 ',. J OF THE BOTANICAL EXCHANGE CLUB, (CONVENIENTLY ABBREVIATED REP. B.E.C.) BY.THE EDITOR AND DISTRIBUTOR, F. RILSTONE, ESQ. VOL. VUI. PART IV. \. PUBLISHED BY T .. BUNCLB& CO., MARKET PLACE, ARBROATH. August 1928. PRICE 4/-. \ I" TItC ,Stroctgre and Development ", . ~f, th" Fungi / ) 'I. l;3y H. e,.r. GYWNNE-VAUGHAN, D.B.E:, "LL.D., D.Sc.,F.L.S., i'rof~ssor ,of Botany in the U~iversity of Londol?- and B. BARN;ES, B.Scp F.L.S." . Lecturer in, Botany~ Birkbeck Oollege, University of London With a!fronti~piece and28s text-figures. I ' I " • ' ." I. " Demy 8vo: " I5s net~, : ' " I}) I.This Book includes .the whole of .the ,F~ngi'1fot ' merely selected,classes, and it is addressed to the student rather than to the ,investigat~r. It has peel!- designedt'o meet the needs of students in the BQt~nical Depahments of,Universities. h, I ! ;',' ~ A Treatise on the British ! I' , F,reshwaterAIgae, . / . .' '. ., I in which are included a)l the Pigmented ?rotophyta hivherto ' I found in British Fr~shw;:tters. ,I' "':, ". " ' . I By the late G .. S. WEST" M.A., D,Sc., F.L.~., A.R.e.S. NEw ANIi REVISED .EDITION in great part rewritten by F. E. F~ITSe~, n.'Se., PH.D., F.~.S. ' Demy 8vo. ,215, net. c', It is most carefuilycompiled... " Th~re is a figure for ev~ry British fresh'water alga, an,ci in the case of many of the'larger genera several species are illustrated. One 9f the striking features of the , book is thlltt it, includes certain iorms whicll have so far been usually recognised bysonre' authorities asuni~ellular algae.... '. The new edition of West, so largely rewritten by Frrtscli, will be ,of the grea:.test . use to alarge ilUmper of investigators iIithis field."-l'he Cambridge. R~~iew. c :.' . , i CAMBRIDGE UNIVERSITY PRESS,Fetter Lane, LONDON, 'E.C.4 I' "," '. ' 'l'HE BOTANICAL SOCIETY AND EXCHANGE CLUB OF THE BRITISH ISLES. (VOL. VIII. PART IV). Victoria Regina. Floreat flora. REPORT FOR 1927 OF THE BOTANICAL EXCHANGE CLUB (Conveniently Ab;;'reviatedfor Citation REP. B.E.C.) BY THE EDITOR AND DISTRIBUTOR, F. RI L S TON E, ESQ. The Subscription, 12s '6d per annum, and Non-Contributing Member's Subscription of 10s per annum, become due On January 1, 1928, and should , be sent'to G. CLARIDGE DRUCE, YARDLEY LODGE, 9 CRICK ROAD, OXFORD. Cheques for three or four years in advance save much trouble and expense. Parcels for 1928 should be sent, post paid, on or before 3rd December 1928, to W. B. TURRILL, M.sc., THE HERBARIUM, " ROYAL BOTANIC GARDENS, KEW, who will act as Distributor and Editor of the RE.C. Report. PRINTED BY T. BUNCLE & Co., ARBROATH. AUGUST 1928. ( REPORT FOR 1927. 559 REPORT OF THE JJlSTRIBUTOR FOR 1927. As might have been expected after such an unfavourable collecting season as the summer of 1927 proved to be, the number of plants contri buted to the Exchange was below the average: 28 members sent in 4485 sheets. The· greater p·art of these came as a result either of critical study by members of the variations of well-known British plants, or of the equally interesting problems of the occurrence of plants of alien origin. A series of beautifully prepared American plants came from Pro fessor Beattie and a very welcome Canadian gathering of Ludwigia palustris from Fr. Arsene, our largest contributor. From the personal point of view the Distributor gratefully records the evident pains taken by all the more experienced contributors to lighten his task. One small suggestion he has to make is that flimsy water plants, which have a troublesome habit of adhering to the sheet immediately above, should always be placed separately in folded covers. M1' Wall's suggestion in last year's Report that all the labels for anyone gathering might well be placed together at the beginning of the gathering, rather than distributed among the sheets, was generally adopted, and a very considerable saving of time in stamping resulted. The thanks of the Club are again due to Mrs E. S. Gregory, Drs E. Drabble and G. C. Druce, Messrs A. Bennett, C. E. Britton, J. Frascr, L. V. Looter-Garland, W. O. Howarth, W. H. Pearsall, C. E. Salmon, Rev: H. J. Riddelsdell and Col. Wolley-Dod for their notes on the cri tical plants submitted to them. F. RILSTONE. POLPERRO, April 1928. 560 THE BOTANICAL EXClIANGE CLUB OF THE BRITISlI ISLES. LIST OF PLANTS BEOEIVED. G'atherings. No. of Sheets. G. C. Druoe, 55 640 C. Waterfall, 8 114 Rev. Bro. Louis-Arsene, 39 814 L. B. Hall, 3 19 W. Biddiscombe, 4 40 J. Fraser, 4 83 J. E. Little, 22 300 J. E. Lousley, 39 537 C. E. Britton, 20 254 F. Rilstone, 12 163 R. Bulley, 8 67 J. W. White, 9 101 Miss R. Bright, 2 23 J. W. Long, 3 44 G. C. Brown, 13 131 L. V. Lester-Gar land, 2 31 F. S. Beattie, 27 270 R. L. Smith, 9 156 C. E. Salmon, 1 9 National Museum of Wales, 6 71 Rev. R;. J. Burdol1, 4 59 A. Wilson, 4 66 R. & M. Corstorphil1e, 2 28 Miss I. M. Roper, 11 176 R. Melville, 10 122 W. A. Sledge, 3 59 I. A. Williams, 7 41 "' , ..,~. B. Marquand, 7 67 334 4485 REPORT FOR 1927. 561 Ranunculus auricomus L. Depauperate type (with reduced num ber of petals). Meadow near the River, Kew, Surrey, April 19, 1926. C. V. B. MARQuAND. "The paper on this species by Professor Weiss should be consulted; see p. 299. This is the var. depauperata Hook. f." -DRUCE. Ranunculus buZbosus L., var. dunensis Druce. Sandy plains and dunes, Bel Royal, May 20, 1926 .. This plant is very common in its true habitat, especially on the Quennevais, St Aubin's Bay, and St Ouen's Bay. It is certainly not R. Aleae Willk., whose stock though swollen is not bulbous. I observed carefully a great number of Jersey plants, and I never found a s'ingle one that was cormless. The assertion of the Cambridge Illora that R. Aleae is very common in St Ouen's Bay can not be true. The type is not rare in meadows, hedges and roadsides. h ARSENE. "I quite agree with Fr. ArSEme in his opinion that it is not It. A leae. I examined thousands of plants in the area in which that plant was asserted to have been found, but never saw a cormless plant. The one on which Aleae is described in the Cambridge Illora must have been an abnormal plant of dunensis, which seems to be distinct from valdepubens Jord."-DRucE. "Unfortunately, my specimen does not show ripe fruit, but it is certainly not R. Aleae Willk. The well-de veloped corm and the peduncle furrowed to the base are not those of Aleae. The Cambridge Illora seems to be quite wrong about Aleae." DRABBLE. Ranunculus heterophyllus Weber, v<ar. trifid-us W. H. Pearsall. [Ref. No. Y.122.] Pond on. Mitcham Common, Surrey, May 10, 1927. This series shows great variation in the floating leaves, which in some specimens are completely absent. The submerged leaves were not na turally quite so tassel-like rus they appear in these dried examples. The stamens were numerous.-J. E. LOUSLEY. "Correctly named, but the floating leaves of the plant are not typical on my specimen. This name has been substituted for that of triphyllus (Hiern) as being not liable to be confused with that of t1'iphyllus Wallroth. The carpels of Mr Lousley's plant are, however, much nearer to those of Wallroth's plant than those of any British specimens I have seen. Those on my sheet are quite glabrous, but scarcely , glaberrimis nitidis.' I should be in terested to see further complete and mature examples of this plant next year."-W. H. PEARSALL. Batrachi1Mn peltat1wn Fr. A small form. vVurple Pool on Barrow Hill at 600 ft., N. Somemet, May 27, 1927.-J. W. WHITE. "A weak and untypical form of this species with nearly glabrous carpels." PEARSALL. Ranunculus peltat1~s Schrank, forma tr·uncat·us Koch. [Ref. No. Y.127.] Pond near Hand in Hand between Box Hill and Headley, Surrey, May 29, 1927.-J. E. LOUSLE,Y. "My sheet shows typical R. peltatus, with densely hairy capsules. None of its leaves are truncate." -PEARSALL. r 562 THE BOTANICAL EXCHANGE CLUB OF THE BRiTISH ISLES. Ranunculus Ficaria L., forma luxurians Moss. Wet places; much less common than the type. Seems to be a true variety. La Haule, March 16, 1926.-L. ARSENE. "I agree with Fr. Ars(me and have put luxu'rians as a variety in the List. The fruits are distinctly hairy." DRUCE. Actaea spicata L. Hayton -Wood, Aberford, "-IV. York, May 28, 1927.-W. A. SLEDGE. Papaver Rhoeas L., var. [P.P. 99.J Garford, Berks, July 1927. G. C. DRUCE. Papaver hybrid1.m L. Splott, Cardiff, Glamorgan, May 1927. These plants were growing in company with Roemeria and were introduced from the same source.-R. L. SMI,TH. Glaucium corniculatwn Curt. Allotments, Splott, Cardiff, Glam organ, September 1927. Grain-sifting alien.-Coll. A. E. WADE; Comm. NATIONAL MUSEUM OF WALES. Roemeria hybrida DC. Splott, Cardiff, Glamorgan, May 1927. This plant appeared sparingly on some allotments at Splott in 1926, where it was seen by a number of our members, including Dr Druce. This year quite a number sprang up; in fact, I saw over sixty plants in a space about three yards square.