Atlas Of Ferns Of The British Isles
Atlas Of Ferns Of The British Isles Atlas Of Ferns Of The British Isles
40 POLYPODIACEAE 0 7 5 16.2 1 2 3 4 POLYPODIUM N2 INTERJECTUM Intermediate Polypody t? Kdometres 9 100 1 100 16.2 Polypodium interjectum Shivas (P.vulgare auct.; P.vulgare L. subsp. prionodes Rothm.) \ 9 9 8 A sub-Atlantic alloploid species derived from hybridization of 16.1 and 16.3 having intermediate characters, both morphological and ecological. Its weak lime requirements are satisfied in coastal habitats by salt-laden winds and it is often a common component of mature sand-dune systems. It may also require a generally higher humidity than P.vulgare. 2 o .o Oa: 00 , 8 Ni 0 lix .J71 7 4 5 6 6 6 9 CNANNEL ISLANDS PLOT TED ON 0 WV UTM GRID 8 0 1:5? 1 00 0 SI :68 o *I II 0 I. 0: .8 Is o8 8 o . t (Poo our : o 000 0 0 0 0 0 r :: .04) 1 2 3 4 5 6 5 4 3 2 1 0
POLYPODIACEAE 41 0 7 8 0 16.2 x1 POLYPODIUM X MANTONIAE Xdornetres Miles 9 100 100 9 6 6 5 0 CHANNEL ISLANDS PLOT TED ON 0 wv UTM GRID 8 0 9 0 2 ss 8 8 0 8 9 8 Ni 0 7 5 00 1 2 3 4 5 6 N2 16.2 x 1 Polypodium X mantoniae Rothm. (P.interjectum x vulgare) This hybrid can be recognized by its vigour, often forming large clones; morphologically it is intermediate between the parents. Frequent throughout Britain but less so in Ireland. The density of records for this hybrid in north and south-west Wales reflects concentrated field-work and its apparent scarcity elsewhere may not be a biological reality. Q 0 5 4 3 2 0
- Page 1 and 2: Atlas of Ferns of the British Isles
- Page 3 and 4: ATLAS OF FERNS OF THE BRITISH ISLES
- Page 5 and 6: It is now 16 years since the public
- Page 7 and 8: LYCOPODIACEAE 3 0 7 5 0 8 0 1.1 LYC
- Page 9 and 10: LYCOPODIACEAE 5 0 7 8 2.1 LYCOPODIE
- Page 11 and 12: LYCOPODIACEAE 7 0 6 5 0 0 4.1 DIPHA
- Page 13 and 14: SELAGINELLACEAE 9 0 5.1 SELAGINELLA
- Page 15 and 16: 0 8 9 0 CHANNEL ISLANDS PLOT TED ON
- Page 17 and 18: ISOETACEAE 6.3 ISOETES HISTRIX Land
- Page 19 and 20: EQUISETACEAE 15 0 6 5 0 7.1x r EQUI
- Page 21 and 22: EQUISETACEAE 17 0 0 7.2 EQUISETUM V
- Page 23 and 24: EQUISETACEAE 19 0 7 6 5 0 7.3x7 ®E
- Page 25 and 26: EQUISETACEAE 21 0 6 5 0 7.4x3 EQUIS
- Page 27 and 28: EQUISETACEAE 0 6 0 7.5 EQUISETUM N2
- Page 29 and 30: 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: POLYPODIACEAE 0 6 5 0 16.1 POLYPODI
- 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 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
40 POLYPODIACEAE<br />
0<br />
7<br />
5<br />
16.2<br />
1 2 3 4<br />
POLYPODIUM N2<br />
INTERJECTUM<br />
Intermediate<br />
Polypody<br />
t?<br />
Kdometres<br />
9<br />
100<br />
1<br />
100<br />
16.2 Polypodium interjectum Shivas<br />
(P.vulgare auct.; P.vulgare L. subsp. prionodes<br />
Rothm.)<br />
\<br />
9 9<br />
8<br />
A sub-Atlantic alloploid species derived from hybridization<br />
of 16.1 and 16.3 having intermediate characters, both<br />
morphological and ecological. Its weak lime requirements are<br />
satisfied in coastal habitats by salt-laden winds and it is often a<br />
common component of mature sand-dune systems. It may also<br />
require a generally higher humidity than P.vulgare.<br />
2<br />
o<br />
.o<br />
Oa:<br />
00<br />
,<br />
8<br />
Ni<br />
0<br />
lix<br />
.J71<br />
7<br />
4<br />
5 6<br />
6 6<br />
9<br />
CNANNEL ISLANDS<br />
PLOT TED ON 0<br />
WV<br />
UTM GRID<br />
8 0<br />
1:5?<br />
1<br />
00<br />
0<br />
SI<br />
:68 o<br />
*I II<br />
0<br />
I.<br />
0:<br />
.8 Is o8 8<br />
o . t (Poo<br />
our :<br />
o<br />
000<br />
0 0 0 0<br />
0 r ::<br />
.04)<br />
1 2 3 4 5 6<br />
5<br />
4<br />
3<br />
2<br />
1<br />
0
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