Friday, February 4, 2022

FRONT PAGE AND INDEX TO ALL FERNS

 




Polypodium cambricum found on Lancelot Clark Storth (CWT)



Index to Fern Species (24 species)

Asplenium adiantum-nigrum (Black Spleenwort)

Asplenium ceterach (Rusty Back Fern)

Asplenium trichomanes (Maidenhair Spleenwort)

Asplenium viride (Green Spleenwort)



Cystopteris fragilis (Brittle Bladder Fern)

Dryopteris dilatata (Broad Buckler Fern)

Dryopteris affinis (Scaly Male Fern)

Dryopteris submontana (Rigid Buckler Fern)

Gymnocarpium robertianum (Limestone Fern or Limestone Polypody)

Ophioglossum vulgatum (Adder's tongue)

Phegopteris connectilis (Beech Fern)

Polypodium cambricum (Southern Polypody)

Shows photos of: early day Croziers, Views of all three specimens (1, 2 and 3) eg: 1 population down grike and the other two populations are both on top of a boulders, one in canopied woodland whilst the other out in the open. Also showing a photo of spent ferns from May.

Polypodium interjectum (Intermediate Polypody)

Polypodium vulgare (Common Polypody)

Polystitchum aculeatum (Hard Shield Fern)


Shows photos and known history of both Holly Fern No.1 and Holly Fern No.2 - Also a short article on how the Fern was re-discovered almost 60 years later. Also a link to watch the BBC News item on the finding of the Holly Fern. 

Polystitchum x illyricum (Holly Fern/Hard Shield Fern hybrid)

Polystitchum x lonchitiforme ( Holly Fern/Soft Shield Fern
hybrid)

To the best of my knowledge we have not yet discovered the rare 'illyricum' hybrid on Hutton Roof, although there is every possibility we might one day, so I have put some details and photos on the site to describe the rarity in the event.

Polystitchum setiferum (Soft Shield Fern)

Pteridium aquillinum (Bracken or Brake)

Polystitchum x illyricum (the rare hybrid between Polystichum lonchitis (Holly Fern) and Polystichum acueleatum (Hard Shield Fern)

 


below: P. x illyricum (hybrid)
Polystitchum lonchitis (Click over to enlarge)
taken from the BSBI crib showing how to recognize pinnae detail on hybrid P.x illyricum

This above is a photo of P. x illyricum (hybrid) the photo was taken from a specimen in Scotland
Note the "in between" look at the top row of pinnae.
Thanks to Roger Golding for photo


Rare photos of P. x illyricum (hybrid)   


 The above photo show the rare hybrid  P. x illyricum (Click over to enlarge)
The hybrid is of Polystichum lonchitis (Holly Fern) and Polystichum aculeatum (Hard Shield Fern)
The photos have been kindly shared to me by Andrew Leonard who discovered the
rare plant in Vercors, France.

 The above photo show the rare hybrid  P. x illyricum (Click over to enlarge)
The hybrid is of Polystichum lonchitis (Holly Fern) and Polystichum aculeatum (Hard Shield Fern)
The photos have been kindly shared to me by Andrew Leonard who discovered the
rare plant in Vercors, France.

The above photo show the rare hybrid  P. x illyricum (Click over to enlarge)
The hybrid is of Polystichum lonchitis (Holly Fern) and Polystichum aculeatum (Hard Shield Fern)
The photos have been kindly shared to me by Andrew Leonard who discovered the
rare plant in Vercors, France.

 The above photo show the rare hybrid  P. x illyricum (Click over to enlarge)
The hybrid is of Polystichum lonchitis (Holly Fern) and Polystichum aculeatum (Hard Shield Fern)
The photos have been kindly shared to me by Andrew Leonard who discovered the
rare plant in Vercors, France.


 The above photo show the rare hybrid  P. x illyricum (Click over to enlarge)
The hybrid is of Polystichum lonchitis (Holly Fern) and Polystichum aculeatum (Hard Shield Fern)
The photos have been kindly shared to me by Andrew Leonard who discovered the
rare plant in Vercors, France.

Polystichum x lonchitiforme (hybrid between the P. Lonchitis (Holly Fern) and the P. setiferum (Soft Shield Fern).

 


The lonchitiforme is a rare hybrid, in fact you could probably count the number of specimens found in the UK on one hand and thats being conservative. It was a privilege to find one and to handle and then take photos was even more special. I doubt very much it will ever be found on Hutton Roof simply because of the shortage of Setiferum, but one never knows for sure!

I am putting most of my energies these days trying to find the equally rare P.x Illyricum which is the hybrid between the P. Lonchitis (Holly Fern) and the Polystitchum aculeatum. With this I do feel that I am within a chance that one could possibly be found on Hutton Roof if one hasn't already been found . After saying all that there are very subtle differences in the look between either Illyricum or lonchitiforme, not sure but think it will be down to chromosome levels at the end of the day. 

Ah! just remembered there is another way of telling and thats by checking out the lowest pinnae and note the small difference of the gaps, see this photo crib:

When I look careful at the lonchitiforme (photos below) I can see so many resemblances in keeping with both rare hybrids (x illyricum and x lonchitiforme). And just has it should be you look at the plant from a short distance away and realize just how striking a look of lonchitis (Holly fern) with its scythe shaped pinnae and parts of the rest of its profiles, height and width of fronds and the tailing off with the lower parts of the frond. Also when you look carefully at the pinnae you see again that typical in between hybrid look with the top side of SOME of the pinnae hardly notched compared to other pinnae which are heavily notched. Really the signs shine out at you as long as you dont expect too much!


Rare Photos of Polystichum lonchitiforme
the hybrid between P. Lonchitis and P. setiferum


(above) Polystichum lonchitiforme - 
The above specimen is thought to have originated
from Glenaide, Ireland.

(above) Polystichum lonchitiforme - 
The above specimen is thought to have originated
from Glenaide, Ireland.

(above) Polystichum lonchitiforme - 
The above specimen is thought to have originated
from Glenaide, Ireland.

(above) Polystichum lonchitiforme - 
The above specimen is thought to have originated
from Glenaide, Ireland.


Polystichum x lonchitiforme, A fern hybrid new to the British Isles
the following extract taken from Watsonia Vol II part 2 - July 1976 the document authored by A. Sleep)

Two of the three possible hybrids between the British species of Polystichum have been recorded from the British Isles.  The third, P. Lonchitis x P. setiferum (=P.x lonchitiforme (Halacsy) Becherer) previously known only from a single specimen from southern Greece, has recently been discovered in a locality in Western Ireland Ben Bulbin in counties Sligo and Leithrim), where it grows together with P. aculeatum and both parents. The hybrid is of intermediate morphology, with abortive spores and very narrow, erect fronds, which in the middle third are deeply dissected and almost bipinnate.  It is very easily confused with the related P. aculeatum x P. lonchitis (P.x illyricum (Borbas) Hahne, and the only sure way to distinguish them is by a chromosome count, P.x lonchitiforme being diploid (2<=82) and P.x illyricum triploid (2<=123).
Herbarium specimens of the hybrid and its parents were shown, together with photographs of spore and chromosome preparations and a map and pictures of the locality.  (A. Sleep)



Wednesday, May 15, 2019

Ophioglossum vulgatum - Adders Tongue


Population 3 - Hutton Roof
(fertile)

This is the most prolific population, and is found to the North West side of Hutton Roof, and at the side of a well trodden footpath. Their are hundreds if not a thousand or so, covering an area of about a metre wide and over a distance of 18 metre (20 yards) intermittent. The plants are well shielded by emerging bracken. I found the population on 14th May 2020.

 Ophioglossum vulgatum (Adders Tongue Fern)
Photo: 14th May 2020 - Hutton Roof

  Ophioglossum vulgatum (Adders Tongue Fern)
Photo: 14th May 2020 - Hutton Roof


 Ophioglossum vulgatum (Adders Tongue Fern)
Photo: 14th May 2020 - Hutton Roof

Population 2 - Burton Fell
(infertile)

Now we have another fern from yesterday and showing nice emergence photographs, this time the Ophioglossum vulgatum (Adders Tongue Fern).  To my knowledge so far this is only the 2nd population so far found on Hutton Roof Crags. I have checked out this population in both 2019 and 2020 and although you get the shoots and growth of the large leaves you do not get the column, so obviously I have taken it that these plants are infertile. 


Ophioglossum vulgatum (Adders Tongue Fern)
Shows nice emergence shoots coming through the rotting down leaves
Photo: Burton Fell (CWT), Hutton Roof Crags 2020


Ophioglossum vulgatum (Adders Tongue Fern)
Shows nice emergence shoots coming through the rotting down leaves
Photo: Burton Fell (CWT), Hutton Roof Crags 2020

Population 1 - Holme Stinted Pastures
(fertile)


 Ophioglossum vulgatum - Adders Tongue (Click over to enlarge)
Photo: Population 1 - Holme Stinted Pastures 15th May 2019

Ophioglossum vulgatum - Adders Tongue (Click over to enlarge)
Photo: Population 1 - Holme Stinted Pastures 15th May 2019

First I have found on the Hutton Roof complex. So small up to about 4" in height. Population 1 area covers about 11 linear metres x 1 metre wide and holds hundreds of Adders Tongue Fern.

Ophioglossum vulgatum (Adders Tongue)
Photo: Holme Stinted Pastures on 29th May 2020

Ophioglossum vulgatum (Adders Tongue)
Photo: Holme Stinted Pastures on 29th May 2020

Ophioglossum vulgatum (Adders Tongue)
Photo: Holme Stinted Pastures on 29th May 2020


Friday, February 8, 2019

Gymnocarpium robertianum (Limestone Fern or Limestone Polypody)


18th April 2020

Today I was able to find lots of early developing Gymnocarpium robertianum (Limestone Fern)



 Gymnocarpium robertianum (Limestone Fern or Limestone Polypody)
This photo shows early stages of development
shows it with early opening of the croziers and taking on its true lime green colours.
Photo: Burton Fell 18th April 2020


 Gymnocarpium robertianum (Limestone Fern or Limestone Polypody)
This photo shows the fern in its early secondary stages with the croziers now fully open,
yet awaiting straightening of frond.  This looks well growing vertical from a open gryke
Photo: Burton Fell, Hutton Roof Crags (CWT) 18th Apr 2020


Gymnocarpium robertianum (Limestone Fern or Limestone Polypody)
This photo shows the early tight croziers of the fern before opening
you may note it is a very much darker green
Photo: Burton Fell, Hutton Roof Crags (CWT) 18th Apr 2020


Emergence photos (12th April 2019)


 Gymnocarpium robertianum (Limestone Fern or Limestone Polypody)
Photo: Holme Stinted Pastures (Hutton Roof) on 12th April 2019
Showing croziers at onset


Gymnocarpium robertianum (Limestone Fern or Limestone Polypody)
Photo: Holme Stinted Pastures (Hutton Roof) on 12th April 2019
Showing croziers at onset



 Gymnocarpium robertianum (Limestone Fern) Click over to enlarge
Photo: 29th April 2019 - Holme Stinted Pastures in the shadow of Hutton Roof
Fresh fronds within the shallow gryke


Gymnocarpium robertianum (Limestone Fern) Click over to enlarge
Photo: 29th April 2019 - Holme Stinted Pastures in the shadow of Hutton Roof

Close up of individual frond


Gymnocarpium robertianum (Limestone fern or Limestone polypody)
Showing at about 3-4 weeks after emergence on 9th May 2018


Gymnocarpium robertianum (Limestone Fern or Limestone Polypody) Click over to enlarge
Photo taken on Dalton Crags on 1st June 2017


Gymnocarpium robertianum (Limestone Fern or Limestone Polypody) Click over to enlarge
Photo: taken on 1st June 2017


Gymnocarpium robertianum (Limestone Fern or Limestone Polypody)
Photo: taken 1st June 2017


Gymnocarpium robertianum (Limestone Fern or Limestone Polypody) Click over to enlarge
Photo taken on Dalton Crags on 9th June 2016


Gymnocarpium robertianum (Limestone Fern or Limestone Polypody) Click over to enlarge
Photo taken on Dalton Crags on 12th June 2013


Gymnocarpium robertianum (Limestone Fern or Limestone Polypody)
Click over to enlarge
Photo taken on 12th June 2013
"A wet version"

Gymnocarpium robertianum (Limestone Fern or Limestone Polypody)
Click over to enlarge
Photo: 23rd June 2015 - Lancelot Clark Storth (CWT)


Gymnocarpium robertianum (Limestone Fern or Limestone Polypody)
Click over to enlarge
Photo: 23rd July 2015


Gymnocarpium robertianum (Limestone Fern or Limestone Polypody)
Click over to enlarge
This shows old fronds and how they go discoloured with ageing.
Photo: taken on Burton Fell on 14th August 2014

Gymnocarpium robertianum (Limestone Fern)
Dalton Crags on Wed 13th May 2020

Gymnocarpium robertianum (Limestone Fern)
Dalton Crags on Wed 13th May 2020


Gymnocarpium robertianum (Limestone Fern)
Dalton Crags on Wed 13th May 2020



Gymnocarpium robertianum (Limestone Fern)
Dalton Crags on Wed 13th May 2020


Gymnocarpium robertianum (Limestone Fern)
Dalton Crags on Wed 13th May 2020



Gymnocarpium robertianum (Limestone Fern)
Dalton Crags on Wed 13th May 2020


Gymnocarpium robertianum (Limestone Fern)
Dalton Crags on Wed 13th May 2020


Gymnocarpium robertianum (Limestone Fern)
Dalton Crags on Wed 13th May 2020



Gymnocarpium robertianum (Limestone Fern)
Dalton Crags on Wed 13th May 2020


Gymnocarpium robertianum (Limestone Fern)

Dalton Crags on Wed 13th May 2020