Atlas Of Ferns Of The British Isles

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84 ASPIDIACEAE 0 7 6 5 0 27.2x1 DRYOPTERIS X MANTONIAE 27.5x 1 ®DRYOPTERIS X PSEUDOABBREVIATA 8 s, Kdornetres Miles CHANNEL ISLANDS PLOTTED ON 0 wv UTM GRID 1 tfi 100 9 9 0 0 2 1 2 %Pa 1 2 27.2 x 1 Dryopteris X mantoniae Fraser- Jenkins & Corley (D.filix-masx oreades) All records have been determined by C.R.Fraser-Jenkins or H.V.Corley. This is a sterile triploid hybrid likely to be found when its parents grow together. (See C.R.Fraser- Jenkins & H.V.Corley, Br. Fern- Gaz., 10: 230; 1972; and A.C.Jermy & S.Walker, in C.A.Stace (ed.), Hybridization and the Flora of the British Isles: 113; 1975.) 3 3 4 E.? 00 .
ASPIDIACEAE 85 7 6 5 4 0 8 27.2x 3 DRYOPTERIS XTAVELII 0 von Tavel's Male -fern CHANNEL ISLANDS PLOT TED ON UT M GRID Kiometres Mdes 9 100 100 9 0 WV tz). 27.2 x 3 Dryopteris x tavelii Rothm. (D.fdix-mas x pseudomas) 9 8 2 1 2 1 2 This hybrid is intermediate in its morphology between its parent species. Two cytotypes are known, depending on the ploidy of the D.pseudomas parent; both have been recorded from the British Isles. Following the discovery by W. Dopp (Planta, 46: 70-91; 1955) that, in culture, it is capable of a low level of self reproduction, being apogamous, several authors have reported it widely on the Continent. Forms of D.pseudomas that tend towards the morphology of D.fdixmas are also often mistaken for it and have contributed to its over-recording. The fronds have scales with dark bases and the junction of 3 4 .. 3 4 9 8 N1 0 7 5 4 6 4,41 5 6 the pinna axes with the main rhachis is darkly coloured as in D.ps.eudomas. The lamina is a light green but retains the gloss of the latter species The pinnules have parallel sides which are toothed or in some cases, especially on the lowest basiscopic pinnule (i.e. those at the base of the pinna pointing to the frond base), deeply lobed; the pinnule apex is pointed. The indusium often shows the characteristics of both parent species, the margin being tucked on one side and extended over the lamina on the opposite side. (See A.C.Jermy & S.Walker, in C.A.Stace (ed.) loc. cit.: 113; 1975). tA, 0 6 5 4 3 2 0
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Atlas of Ferns of the British Isles
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ATLAS OF FERNS OF THE BRITISH ISLES
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It is now 16 years since the public
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LYCOPODIACEAE 3 0 7 5 0 8 0 1.1 LYC
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LYCOPODIACEAE 5 0 7 8 2.1 LYCOPODIE
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LYCOPODIACEAE 7 0 6 5 0 0 4.1 DIPHA
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SELAGINELLACEAE 9 0 5.1 SELAGINELLA
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0 8 9 0 CHANNEL ISLANDS PLOT TED ON
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ISOETACEAE 6.3 ISOETES HISTRIX Land
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EQUISETACEAE 15 0 6 5 0 7.1x r EQUI
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EQUISETACEAE 17 0 0 7.2 EQUISETUM V
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EQUISETACEAE 19 0 7 6 5 0 7.3x7 ®E
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EQUISETACEAE 21 0 6 5 0 7.4x3 EQUIS
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EQUISETACEAE 0 6 0 7.5 EQUISETUM N2
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EQUISETACEAE 0 6 7.7 EQUISETUM PALU
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OPHIOGLOSSACEAE 27 0 0 8.1 CHANNEL
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OPHIOGLOSSACEAE 29 0 0 9.2 OPHIOGLO
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OSMUNDACEAE 0 6 0 10.1 OSMUNDA REGA
Page 37 and 38: ADIANTACEAE 33 0 1 2 3 0 0 12 .1 0
Page 39 and 40: HYMENOPHYLLACEAE 35 0 1 2 3 0 0 14.
Page 41 and 42: HYMENOPHYLLACEAE 37 0 6 5 0 8 0 15.
Page 43 and 44: POLYPODIACEAE 0 6 5 0 16.1 POLYPODI
Page 45 and 46: POLYPODIACEAE 41 0 7 8 0 16.2 x1 PO
Page 47 and 48: POLYPODIACEAE 0 6 5 0 8 16.3x1 POLY
Page 49 and 50: DENNSTAEDTIACEAE 0 0 17.1 PTERI DI
Page 51 and 52: THELYPTERIDACEAE 47 0 6 5 0 19.1 PH
Page 53 and 54: ASPLENIACEAE 0 6 0 21.1 ASPLENIUM S
Page 55 and 56: ASPLENIACEAE 0 6 5 0 21.2 ASPLENIUM
Page 57 and 58: ASPLENIACEAE 53 0 7 6 5 0 21.3 ASPL
Page 59 and 60: ASPLENIACEAE 55 0 0 6 5 21.5 ASPLEN
Page 61 and 62: ASPLENIACEAE 57 0 21.7 ASPLENIUM TR
Page 63 and 64: ASPLENIACEAE 59 0 0 5 21.7b ASPLENI
Page 65 and 66: ASPLENIACEAE 61 0 0 7 6 5 8 21.8 AS
Page 67 and 68: ASPLENIACEAE 63 0 7 6 5 0 8 21.9 x
Page 69 and 70: ASPLENIACEAE 0 1 2 3 o o 21.10x 7a
Page 71 and 72: ATHYRIACEAE 67 0 1 2 3 4 0 0 22.1 A
Page 73 and 74: ATHYRIACEAE 69 0 5 22.3 ATHYRIUM FL
Page 75 and 76: ATHYRIACEAE 71 0 6 5 23.2 GYMNOCARP
Page 77 and 78: ATHYRIACEAE 73 0 6 5 0 8 24.2 CYSTO
Page 79 and 80: ATHYRIACEAE 0 6 5 0 25.1 WOODSIA IL
Page 81 and 82: ASPIDIACEAE 0 0 6 5 26.1 POLYSTICHU
Page 83 and 84: ASPIDIACEAE 79 0 6 5 0 26.2 x3 POLY
Page 85 and 86: ASPIDIACEAE 0 7 0 27.1 DRYOPTERIS O
Page 87: ASPIDIACEAE 0 6 0 8 27.2 DRYOPTERIS
Page 91 and 92: ASPIDIACEAE 0 6 5 0 27.4 DRYOPTERIS
Page 93 and 94: ASPIDIACEAE 89 0 7 5 0 0 27.6 DRYOP
Page 95 and 96: ASPIDIACEAE 91 27.8 DRYOPTERIS 1 2
Page 97 and 98: ASPIDIACEAE 93 6 5 0 27.9 DRYOPTERI
Page 99 and 100: ASPIDIACEAE 95 0 7 6 5 27. 9 x 10 D
Page 101 and 102: BLECHNACEAE 97 0 6 5 0 28.1 BLECHNU
Page 103 and 104: AZOLLACEAE 99 0 5 0 8 30.1 AZOLLA F
Page 105: Equisetum arvense 19, 20 x fluviati
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Atlas Of Ferns Of The British Isles

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