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Gr.Massee del. R.Morgajilith. Podauxis iTidica Sprertg. Tab. 2 94. WestjNewmanimp
33 A MONOGKAPH OF THE GENUS POBAXIS Desv. (= PODAXON Fb.). By George Massee. (Plates 294 & 295.) The genus Podaxis has up to the present been considered as typical of the Gastromycetes, which, with the Hymenomycetes, constitute one of the primary divisions of Fungi known as the Basidiomycetes, characterised by having the spores produced from the apices of large clavate cells or hasidia. The receipt of a batch of Podaxis indica Spreng. (= Podaxon jiistiUaris Fr.), from South Africa, including some very young specimens, has led to the unexpected discovery that the spores are produced in asci, consequently the genus belongs to the Ascomycetes. The species of Podaxis are amongst the largest of fungi, and so close is the general appearance to that presented by typical Gastromycetes, that they have hitherto been mistaken for long-stalked puff-balls, with stems varying from ten to fourteen inches high, and half-an-inch or more in thickness ; the head is usually ovate, from three to seven inches high, and at maturity filled with a dense powdery mass of spores, usually mixed with threads. In Saccardo's ' Sylloge Fungorum ' the genus Podaxon is given as the type of a tribe of Gastromycetous fungi called Podaxinea. It may be stated that all the genera included in the above-named tribe, with the exception of Podaxis, belong to the Gastromycetes. Morphology. Differentiation of the gleba up to the escape of the spores from the asci takes place while the fungus remains under ground. The youngest specimen examined was broadly elliptical, 2 cm. liigh by 1-5 cm. in diameter, and furnished at the base witii a white, cobweb-like mycelium that had bound together the sand into a compact bulb-like mass. At this stage the plant consists of a homogeneous weft ; the component hyphfe are richly supplied with densely granular, vacuolated protoplasm ; the walls are very thin, and transverse septa numerous. The average diameter of the hyphae is about G //, but in numerous instances certain cells become iiitlated into a more or less spherical or pyriform shape, and many of the blind ends of lateral branches terminate in a broadly obovate cell (fig. 8). The walls of the hyplia) become violet at once on the apphcalion of sulphuric acid and iodine. The hypha) run mostly in the direction of the axis of growth, giving oil" numerous lateral branches, which thread irregularly between the ascending primary hyphit!, and usually terminate in blind ends. The weft is compact, but the hypha) are not crowded, and there are many small, irregular interstices containing air. When the fungus has reached a height of 5 cm. with a diameter of 3 cm., a vertical median section shows a considerable amount of internal differentiation, and strongly recalls to mind the appearance of a section of a young agaric Journal of Botany.—Vol. 28. [Feb. 1890,] d
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Page 7 and 8: J i(( THE ) JOURNAL OF BOTANY BEITI
Page 9 and 10: C. C. Babington, M.A., F.R.S. J. E.
Page 12 and 13: sydnev Parkinson dd. 1 .Tri-umfetta
Page 14 and 15: 2 EPILOBIUM NOTES FOR 1880. Cocos I
Page 16 and 17: 4 EPILOBIUM NOTES FOR 1889. allegat
Page 18 and 19: 6 EPILOBIUM NOTES FOK 1880. It seem
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Page 28 and 29: 16 SYNOPSIS OF GENERA AND SPECIES O
Page 30 and 31: 18 CYPERUS JEMINICUS ROTTB. An annu
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Page 34 and 35: 22 SHORT NOTES. 16G0. Master of Mec
Page 36 and 37: 24 HANDBOOK OF THE BROMELIACEi^. pu
Page 38 and 39: 26 HANDBOOK OF TIfE BROMELIACE^. wh
Page 40 and 41: 28 NAMES AND SYNONYMS OF BRITISH PL
Page 42 and 43: 30 MANUAL OF ORCHIDACEOUS PLANTS. i
Page 44: 32 LINNEAN SOCIETY OF LONDON. Oeste
Page 50 and 51: 34 A MONOGRAPH OF THE GENUS PODAXIS
Page 52 and 53: 86 A MONOGRAPH OF THE GENUS PODAXIS
Page 54 and 55: 38 A MONOGRAPH OP THE GENUS PODAXIS
Page 56 and 57: 40 NOTES ON SCOTCH PLANTS. prevente
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FURTHER RECORDS FROM ICELAND. 79 Ba
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FURTHER RECORDS FROM ICELAND. 81 dn
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PUETHER BECOBDS FROM ICELAND. 88 JE
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BENJAMIN CLAEKE, F.L.S. 85 (lateral
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PLANTS FOUND NEAK KILMANOCK, CO. WE
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BIOGRAPHICAL INDEX OF BRITISH AND I
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SHORT NOTES. 91 Univ., Dublin, 1845
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FLORA OF SUFFOLK. 93 hence notice o
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AKTICLES IN JOURNALS. 95 des Bering
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97 NOTES ON ENGLISH RUBI. By W. 0.
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NOTES OX ENGLISH RUBI. 99 The only
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NOTES ON' ENGLISH RUBI. 101 ones ar
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VASCULAR CRYPTOGAMIA 01' NEW GUINEA
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VASCULAR CRYPTOGAMIA OF NEW GUINEA.
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VASCULAK CRYPTOGAMIA OF NKW GUINEA.
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VASCULAR CRYPTOGAMIA OF NEW GUINEA.
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PLANTS 1-UI:ND IN KEIIRY. Ill Jitnc
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PLANTS FOUND IN KERRY. 118 C. praco
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PLANTS FOUND IN KERRY. 115 Reeks ;
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BIOGEAPHICAL INDEX OF BRITISH AND I
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BIOGEAPHICAL INDEX OF BRITISH AND I
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SCIENTIFIC PAPERS OF ASA GRAY. 121
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ARTICLES IN JOURNALS; 123 Wilson's
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LIKNEAN SOCIETY OF LONDON. 125 perf
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LINNEAX SOCIETY OF LONDON. 127 spac
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129 NOTES ON ENGLISH RUBI. By W. 0.
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NOTES ON ENGLISH RUBI. 131 the livi
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NOTES ON EN(iUSH KUHI. 133 8G. R. M
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THE GENUS SCAPHOSEPALUM PFITZER. 13
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NOTKS ON PONDWEEDS. 137 G. S. PULVi
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NOTES ON PONDWEEDS. 139 A specimen
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SYNOPSIS OF OENRUA AST) SPKCIKS OF
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SYNOPSIS OF GENERA AND SPECIES OF M
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A NEW LASTREA FROM ASSAM. 145 petal
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MARINE ALG^ OF DEVON. 147 have now
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149 THE GENEEA OF STAPELIE^. The mo
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BiOGEAPHICAL INDEX OF BRITISH AND I
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157 SHOKT NOTES. Lejeunea Rossettia
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ARTICLES IN JOURNALS, 159 White Smu
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R.Morgan lith. X 8 ^^^'- l-S-Cantha
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162 NOTES ON A NEW SUBSPECIES OF EU
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164 NOTES ON A NEW SUBSPECIES OF EU
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166 SHORT DESCRIPTIVE NOTES ON THRE
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168 ABERDEEN, tORFAR, AND DUMFRIES
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170 ABERDEEN, FOEFAE, AND DUMFRIES
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172 CAREX RIGIDA AND ITS VARIETIES.
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174 SUPPOSED HYBEIDITY IN POTAMOGET
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176 SUPPOSED HYBRIDITY IN POTAMOGET
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178 SUPPOSED HYBRIDITY IN POTAMOGET
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180 NOTES ON HIGHLAND PLANTS. conne
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182 NOTES ON mGHLAND PLANTS. 1886,
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i84 BIOGRAPHICAL INDEX OF BRITISH A
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186 BIOGRAPHICAL INDEX OF BRITISH A
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188 sdoE5: Nol^s. Robinsor, James F
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190 NOTICES OF BOOKS. Physiology. A
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192 LINNEAN SOCIETY OF LONDON. Flor
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194 SYNOPSIS OF THE GENUS TUNICA. c
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196 ' SYNOPSIS OF THE GENUS TUNICA.
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198 SYNOPSIS OF THE GENUS TUNICA. p
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200 HEPATIC.E FOUND IN KERRY, 1889.
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202 HEPATIC.E FOUND IN KERRY, 1889.
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204 EUBUS EEYTHRINUS. It may be wel
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206 KUBUS ERYTIIRINUS. There are fe
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208 SYNOPSIS OF GENERA AND SPECIES
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214 PUCCINIA DIGIlAPUll)iS. cismal
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216 CHANGES AT KEW. upper cell thic
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2l8 SHORT NOTES. were clustered a l
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220 NOTICES OF nooKs. following opi
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222 LINNEAN SOCIETY OF LONDON, nov.
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224 LINNEAN SOCIETY OF LONDON. tion
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226 NOTES ON PONDWEEDS, occupied sp
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228 NOTES ON OXFORD PLANTS. *Fumana
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230 NOTES ON OXFORD PLANTS. f. apri
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232 NOTES ON OXFORD PLANTS. Bor. No
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234 ON SPAUGANIUM. Bhclmum spicant
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23G ON SPARGANIUM. perhaps, not alt
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238 ADDITIONS TO THE IRISH MOSS FLO
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244 BIOGRAPHICAL INDEX OF RRITISH A
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21G BIOGRAPHICAL INDEX. OF BRITISH
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218 SHOUT NOTES. 447. Herbaiium and
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250 NOTICES OF BOOKS. Introduction
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252 NOTICES OF BOOKS. author's prev
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254 NOTICES OF BOOKS. be grateful t
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256 LINNEAN SOCIETY OF LONDON. e lo
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257 ON SOME RUSTS AND MILDEWS IX IN
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ON SOME BUSTS AND MILDEWS IN INDIA.
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ON SOME RUSTS AND MILDEWS IN INDIA.
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TONQUIN FERNS. 263 li-2 ft. loDg, 4
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TONQUIN FERNS. 2G5 broad. Veins pin
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36, 100, 101, 1872. G. elliptica Ba
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CAMPANL'LARUM NOVAKUM DEGAS I'lU.MA
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CAMPANULAKUM iNOVAKU.U DECAS i'Klil
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CAMPANUIiARTJM NOVARUM DECAS PRIMA.
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RUBUS SILVATICUS W. & N. 275 a bram
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OLD HERBARIA. 277 was an * Index Pl
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Biographical indkx of British and i
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283 REPORT OF THE DEPARTMENT OF BOT
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HANDBOOK OF THE FLORA OF EXTRA-TROP
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AKTICLES IN JOURNALS. 287 We have r
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)9Z-vPr ^/^^^^x^e/uyL^
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290 JOHN RALFS. the larger " Floras
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292 JOHN EALFS, recorded nearly sev
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294 PLANTS DESCRIBED BY ARDUlNO. 1.
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296 BUDA V. TISSA. ment of Science,
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298 THE NOMENCLATURE OF P0TA5I0GET0
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300 THE NOMENCLATURE OF POTAMOGETOX
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302 SPERGULA PENTANDRA IN IRELAND ?
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301 THE FERTILISATION OF THE SUGAR-
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306 BIOGEAPHICAL INDEX OF BRITISH A
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808 BIOGEAPHICAL INDEX OF BRITISH A
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316 NOTICES OF BOOKS. europiea. Thi
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318 NOTICES OF BOOKS. the book (pp.
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320 OBITUAEY. Gardeners Chronicle (
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821 ON A NEW HYBRID POTAMOGETON OF
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ON A NEW nynRiD totamogeton of the
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ox A NEW HYBRID POTAMOGETON OF THE
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THREK NEW LASTREAS FROM ASSAM. 327
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IN MEMORY OF MARIANNE NORTH. 829 Pt
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IN JIEMOKY OF MARIANNE NORTH. 331 w
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IN MEMORY OF MARIANNE NORTH. 833 we
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PRESn-WATER ALO-T: of HAMPSIimE. 33
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M. rotata Grev. E. M. papillifera B
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SPERGULA PENTANDRA IN IRELAND, 343
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SHORT NOTES. 349 Swete, Edward Hora
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THE BRITISH MOSS-FLORA. 351 6 plate
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.i!:eS>
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354 THE LATE JAMES BACKHOUSE. found
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356 HEPATIC^ OF LOUGHBBAY, CO. WICK
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358 HEPATIC.E OF LOUGHBRAY, CO. WIC
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360 HEPATIC^ OF LOUGHBRAY, CO. WiCK
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362 THK GENUS XYSMALOBITIM. Trifoli
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364 THE GENUS XYSMALOBIUM. apiculat
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366 INTEODUCED PLANTS IN WEST CORNW
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370 SYNOPSIS OF GENERA AND SPEOIES
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372 PRIOBITY OF PLACE IN BOTANICAL
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376 SHORT NOTES. Flora,' 1877 ; col
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878 THE LEJEUNE^ OF LINDENBEKg's HE
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380 ARTIFICIAL KEYS TO THE GExNERA
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882 OBITUARY. of Harvey's ' Phycolo
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384 EDITOEIAL. now nearly completed
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386 INDEX. P, fluitans, 248 ; Poten
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388 INDEX. Jackson, J. K., Hartig's
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390 INDEX. Staurastrmu glabrnm, 337
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Just Published, Price 5s. 4d. HANDL
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A MESSRS. BELL'S LIST OF BOOKS. Jus
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PRINGLE'S PLANT>E MEXICAN/E (Fifth
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A MESSRS. BELL'S LIST OF BOOKS. Dem
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' O CIENCE AND SCIENTISTS : some Pa
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MESSRS. BELL'S LIST OF BOOKS. Demy
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BOTANICAL DRYING PAPER FOE DKYING F
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A MESSRS. BELL'S LIST OF BOOKS. ' D
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NOTICE. The JOURNAL OF BOTANY is pr
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NOTICE. The JOUKNAL OF BOTANY is pr
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NOTICE. The JOUENAL OF BOTANY is pr
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NOTICE. The JOURNAL OF BOTANY is pr
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MESSRS. BELL'S LIST OF BOOKS. WORKS
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NOTICE. The JOUENAL OF BOTANY is pr
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A MESSRS. BELL'S LIST OF BOOKS. WOR
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' NOTICE. The JOUENAL OF BOTANY is
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Recently Completed, iviiJi 1987 Ful
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NOTICE. The JOUKNAL OF BOTANY is pr
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A MESSRS. BELL'S LIST OF BOOKS. WOR
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t\ V^^ V^ c; ' c' c < ^ ^
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