Atlas Of Ferns Of The British Isles

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78 ASPIDIACEAE 0 7 6 5 0 26.2 POLYSTICHUM ACULEATUM Hard Shield - fern 100 1 1 Kilometres PP CHANNEL ISLANDS Miles 9 00 1 PLOT TED ON 0 wv UTM GRID ' 6P, 100 00 0 9 8 9 0 2 o 00 o 1 2 3 4 of. 3 1 2 26.2 Polystichum aculeaturn (L.) Roth A sub-Atlantic species which is widespread throughout the British Isles. Its distribution pattern reflects its ecological requirements for a base-rich substrate, in places provided by man (e.g. canal-sides, locks and bridges) which in turn have been polluted by industrialisation. The basal pinnae are distinctly smaller than those in the middle of the frond and are only pinnatifid (cf. P.setiferum). The spores are larger than P.setiferum (ay. 41.31.4m) and papillate (A.Sleep, pers. comm.). , 00 00 : se 8 bil_ A61 e 4). o :: vo Yi o il es st 44 es 0 ems 000 7 00000 0 SO 900 000 000 OO o 00 00 000 00 004100 00 00 folo op elm . a* 900 0 000 00 NO 00 O OO 00 00 00000 0800 .0000 O0000 0000 40 O s t *00 0000 0410 0000 00 09 S ni 6 0 0 0 9 5 HX HW Ott 1 0090 O 90, 00 00 0 0 00 0000 00 lit. 0000 ti 50 0000 000 - 0 000 GOtn 0 o 555 . 0 0o So o l: "4"1016 o 518 5 o ill 00 00 45 00 00060 000 0 0 00 0 000 100 00 SO 0041 00 00 00 0 ,ip: 9 00 0000 I set:9 010 04100 00 0o500 00 0000 00.0 04 00 00O0O 00 0 ON 000000 000, o 00000 0 00000 o
ASPIDIACEAE 79 0 6 5 0 26.2 x3 POLYSTICHUM X BICKNELLII 26.2 x 1 ®POLYSTICHUM 0 X ILLYRICUM 0 100 1 Kamen* CHANNEL ISLANDS Mies 9 PLOT TED ON 0 Wv UTM GRID a 0 100 9 9 0 t:;) /5 8 0 2 .6 1 e 1 2 26.2 x 1 Polystichum x illyricum (Borbas) Hayek (P.aculeatum x lonchitis) This hybrid was first detected in herbarium material collected in 1932 from Glenade, v.c. H29 (A.Sleep & D.M.Synnott, Br. Fern Gaz., 10: 281; 1972); it has since been collected alive and awaits cytological confirmation. It is intermediate between the parents although most similar, superficially, to P.aculeatum; the spores are abortive. This hybrid is very difficult to separate from P. x lonchitiforme if all three putative parents are in the vicinity. The record from Inchnadamph, v.c. 108, is outside the known range of P.setiferum however, and therefore is undoubtedly P. x illyricum. (See A.McG.Stirling, Watsonia, 10: 231; 1974, and A.Sleep in C.A.Stace (ed.), Hybridization and the Flora of the British Isles: 119; 1975). 2 3 3 4 9 8 Ni 0 N2 7 4 5 6 5 6 26.2 x 3 Polystichum x bicknellii (Christ) Hahne (P.aculeatum x setiferum) A hybrid which appears frequently in habitats where the parents grow close together. It can appear very similar to P.aculeatum and is therefore very difficult to recognise. It is best confirmed by abortive spores. (See A.Sleep in C.A.Stace (ed.), loc.cit.: 118). Css 0 6 5 4 3 2 1 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
Page 31 and 32: OPHIOGLOSSACEAE 27 0 0 8.1 CHANNEL
Page 33 and 34: OPHIOGLOSSACEAE 29 0 0 9.2 OPHIOGLO
Page 35 and 36: 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: ASPIDIACEAE 0 0 6 5 26.1 POLYSTICHU
Page 85 and 86: ASPIDIACEAE 0 7 0 27.1 DRYOPTERIS O
Page 87 and 88: ASPIDIACEAE 0 6 0 8 27.2 DRYOPTERIS
Page 89 and 90: ASPIDIACEAE 85 7 6 5 4 0 8 27.2x 3
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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