A fern (Polypodiopsida or Polypodiophyta) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. They differ from mosses by being vascular, i.e., having specialized tissues that conduct water and nutrients and in having life cycles in which the sporophyte is the dominant phase. Ferns have complex leaves called megaphylls, that are more complex than the microphylls of clubmosses. Most ferns are leptosporangiate ferns, sometimes referred to as true ferns. They produce coiled fiddleheads that uncoil and expand into fronds. The group includes about 10,560 known extant species. Ferns are defined here in the broad sense, being all of the Polypodiopsida, comprising both the leptosporangiate (Polypodiidae) and eusporangiate ferns, the latter itself comprising ferns other than those denominated true ferns, including horsetails or scouring rushes, whisk ferns, marattioid ferns, and ophioglossoid ferns. Ferns are not of major economic importance, but some are used for food, medicine, as biofertilizer, as ornamental plants and for remediating contaminated soil. 29578

A fern (Polypodiopsida or Polypodiophyta) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. They differ from mosses by being vascular, i.e., having specialized tissues that conduct water and nutrients and in having life cycles in which the sporophyte is the dominant phase. Ferns have complex leaves called megaphylls, that are more complex than the microphylls of clubmosses. Most ferns are leptosporangiate ferns, sometimes referred to as true ferns. They produce coiled fiddleheads that uncoil and expand into fronds. The group includes about 10,560 known extant species. Ferns are defined here in the broad sense, being all of the Polypodiopsida, comprising both the leptosporangiate (Polypodiidae) and eusporangiate ferns, the latter itself comprising ferns other than those denominated true ferns, including horsetails or scouring rushes, whisk ferns, marattioid ferns, and ophioglossoid ferns. Ferns are not of major economic importance, but some are used for food, medicine, as biofertilizer, as ornamental plants and for remediating contaminated soil. 36686

A fern (Polypodiopsida or Polypodiophyta) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. They differ from mosses by being vascular, i.e., having specialized tissues that conduct water and nutrients and in having life cycles in which the sporophyte is the dominant phase. Ferns have complex leaves called megaphylls, that are more complex than the microphylls of clubmosses. Most ferns are leptosporangiate ferns, sometimes referred to as true ferns. They produce coiled fiddleheads that uncoil and expand into fronds. The group includes about 10,560 known extant species. Ferns are defined here in the broad sense, being all of the Polypodiopsida, comprising both the leptosporangiate (Polypodiidae) and eusporangiate ferns, the latter itself comprising ferns other than those denominated true ferns, including horsetails or scouring rushes, whisk ferns, marattioid ferns, and ophioglossoid ferns. Ferns are not of major economic importance, but some are used for food, medicine, as biofertilizer, as ornamental plants and for remediating contaminated soil. 30411

A fern (Polypodiopsida or Polypodiophyta) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. They differ from mosses by being vascular, i.e., having specialized tissues that conduct water and nutrients and in having life cycles in which the sporophyte is the dominant phase. Ferns have complex leaves called megaphylls, that are more complex than the microphylls of clubmosses. Most ferns are leptosporangiate ferns, sometimes referred to as true ferns. They produce coiled fiddleheads that uncoil and expand into fronds. The group includes about 10,560 known extant species. Ferns are defined here in the broad sense, being all of the Polypodiopsida, comprising both the leptosporangiate (Polypodiidae) and eusporangiate ferns, the latter itself comprising ferns other than those denominated true ferns, including horsetails or scouring rushes, whisk ferns, marattioid ferns, and ophioglossoid ferns. Ferns are not of major economic importance, but some are used for food, medicine, as biofertilizer, as ornamental plants and for remediating contaminated soil. 22315

Reproductive structures of non-vascular plant (possibly redshank moss, Ceratodon purpureus) seen magnified by water

A fern (Polypodiopsida or Polypodiophyta) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. They differ from mosses by being vascular, i.e., having specialized tissues that conduct water and nutrients and in having life cycles in which the sporophyte is the dominant phase. Ferns have complex leaves called megaphylls, that are more complex than the microphylls of clubmosses. Most ferns are leptosporangiate ferns, sometimes referred to as true ferns. They produce coiled fiddleheads that uncoil and expand into fronds. The group includes about 10,560 known extant species. Ferns are defined here in the broad sense, being all of the Polypodiopsida, comprising both the leptosporangiate (Polypodiidae) and eusporangiate ferns, the latter itself comprising ferns other than those denominated true ferns, including horsetails or scouring rushes, whisk ferns, marattioid ferns, and ophioglossoid ferns. Ferns are not of major economic importance, but some are used for food, medicine, as biofertilizer, as ornamental plants and for remediating contaminated soil. 820 c

vascular

A vascular plant commonly called "Indian pipe". The scientific name is "Monotropa uniflora". It does not have chlorophyll and cannot use sunlight to make its own food like most vascular plants do; instead it's saprophytic and lives off of decaying wood much like mushrooms.

id: fungi_indian_pipe_078A1276_hdr

__________↓↓↓Click to Listen Here↓↓↓___________________

♫♪►Boyan Hoof - Heart sounds vascular (Live Set Short Session)◄♫♪

IMG_0082cc 2021 12 24 file

Comanche Memorial Hospital Campus

Lawton, OK

A fern (Polypodiopsida or Polypodiophyta) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. They differ from mosses by being vascular, i.e., having specialized tissues that conduct water and nutrients and in having life cycles in which the sporophyte is the dominant phase. Ferns have complex leaves called megaphylls, that are more complex than the microphylls of clubmosses. Most ferns are leptosporangiate ferns, sometimes referred to as true ferns. They produce coiled fiddleheads that uncoil and expand into fronds. The group includes about 10,560 known extant species. Ferns are defined here in the broad sense, being all of the Polypodiopsida, comprising both the leptosporangiate (Polypodiidae) and eusporangiate ferns, the latter itself comprising ferns other than those denominated true ferns, including horsetails or scouring rushes, whisk ferns, marattioid ferns, and ophioglossoid ferns. Ferns are not of major economic importance, but some are used for food, medicine, as biofertilizer, as ornamental plants and for remediating contaminated soil. 36737

From my garden, Ferns to Flickr. They are steadily unfolding and now's the perfect time to get some macro shots.

Fern: Polypodiopsida, Polypodiophyta

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No Group Awards/Banners, thanks

Blue hour in Dolomites Alps

Heart and Vascular Institute

Especialidade - Cirurgia Vascular

Procedimento - Transplante (Construção sobre pedra e cimento)

País de Origem: Portugal

www.youtube.com/watch?v=3IWz-FveTYo

This work is dedicated to my friend Dragan Vavan www.flickr.com/photos/143022682@N03/ - Dragan iI couldn´t accept Ribeira de Colares without having this big pleasure of creating some for you too. To have friends we like, who we learn from and that reminds us once in a while is a treasure we must be able to keep. Life is made of moments and this one was made for you. Hope you like it. Your Friend, Ana Rita

From my garden, Ferns to Flickr. They are steadily unfolding and now's the perfect time to get some macro shots.

Fern: Polypodiopsida, Polypodiophyta

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No Group Awards/Banners, thanks

A backlit sunflower leaf.

Large tree with a lot of weeds and field horsetail a vascular plant that multiply by spores , has beautiful colours at a trail on the shore of Duffins marsh in Discovery bay , Martin’s photographs , Ajax , Ontario , Canada , April 24. 2021

Field Horsetail

field horsetail a vascular plant multiply by spores

Large tree with a lot of weeds and strange tall and thin fungi or plant that has beautiful colours at a trail on the shore of Duffins marsh in Discovery bay in Ajax

Fungi

Fallen tree with beautiful colours that is slowly becoming part of the path we walk or climb on at Duffins marsh , Martin’s photographs

Fallen tree

Duffins marsh in Discovery bay

Martin’s photographs

Ajax

Ontario

Canada

April 2021

Beautiful and Interesting tree shapes with at view over of Duffins marsh

Discovery bay

Beautiful and Interesting tree shapes

IPhone XR

Interesting tree

view over of Duffins marsh

Trees

Duffins marsh

Favourites

Large tree with a lot of weeds and field horsetail a vascular plant that multiply by spores , has beautiful colours at a trail on the shore of Duffins marsh in Discovery bay , Martin’s photographs , Ajax , Ontario , Canada , April 24. 2021

Field Horsetail

field horsetail a vascular plant multiply by spores

Large tree with a lot of weeds and strange tall and thin fungi or plant that has beautiful colours at a trail on the shore of Duffins marsh in Discovery bay in Ajax

Fungi

Fallen tree with beautiful colours that is slowly becoming part of the path we walk or climb on at Duffins marsh , Martin’s photographs

Fallen tree

Duffins marsh in Discovery bay

Martin’s photographs

Ajax

Ontario

Canada

April 2021

Beautiful and Interesting tree shapes with at view over of Duffins marsh

Discovery bay

Beautiful and Interesting tree shapes

IPhone XR

Interesting tree

view over of Duffins marsh

Trees

Duffins marsh

Favourites

Ferns stop me in my tracks, with their impossibly beautiful, complex, fractal leaves.

Hasselblad 500C / 80mm Planar / Kodak TMax 400 / Rodinal

2010-09-05_12

In reality, this is multiple views of candlelight shining through an etched wine glass.

Deep in the Utah desert, veins and arteries run dry and still, waiting in stasis.

Taken in the early morning light with my new favorite photography tool, the DJI air3s drone.

Test of the GFX50s

Grey and miserable out there today, so as it's Spring Tide, I popped along to Charmouth, Dorset for some super low tide

shenanigans.

It's completely different there everytime I visit, but I liked the contrast offered by the black shale ledges and these blue-grey vascular limestone pebbles, slowly rounded and trapped in these tiny channels created by the ebb and flow of the sea.

Lots of areas of the UK this time of year rely on our tourist flow to keep things moving as it were. I find over the summer months that after around 9.0am the full flow onset of this becomes too much for me, I love the feeling of solitude with my thoughts and dreams. But there is still areas of such beauty in Scotland that I can stand alone and ponder.

Georgia Plains, Vermont

In vascular plants, the roots are the organs of a plant that are modified to provide anchorage for the plant and take in water and nutrients into the plant body, which allows plants to grow taller and faster. They most often lie below the surface of the soil, but roots can also be aerial or aerating, that is, growing up above the ground or especially above water.

Kunta Kinte is a fictional African slave taken to 18th-century America in the novel and adapted TV series Roots. Based on the character and his experience, Kunta Kinte is also used as a derogatory name for an African person who has recently immigrated to a new place.

Since mosses have no vascular system to carry water through the plant, they must have a damp environment in which to live, and a surrounding of liquid water to reproduce. And since mosses are photosynthetic, they require enough sun to conduct photosynthesis. Shade tolerance varies by species, just as it does with higher plants. In most areas, mosses grow chiefly in areas of dampness and shade, such as wooded areas and at the edges of streams; but they can grow anywhere in cool damp cloudy climates, and some species are adapted to sunny, seasonally dry areas like alpine rocks or stabilized sand dunes.

Choice of substrate varies by species as well. Moss species can be classed as growing on: rocks, exposed mineral soil, disturbed soils, acid soil, calcareous soil, cliff seeps and waterfall spray areas, streamsides, shaded humusy soil, downed logs, burnt stumps, tree trunk bases, upper tree trunks, and tree branches. Moss species growing on or under trees are often specific about the species of trees they grow on, such as preferring conifers to broadleaf trees, oaks to alders, or vice versa.

Wherever they occur, mosses require high levels of moisture to survive because of the lack of a vascular system, and the need for liquid water to complete fertilisation. Many mosses can survive desiccation, sometimes for months, returning to life within a few hours of rehydration.

I am fascinated by the remarkable functional engineering that living systems express. Is it not amazing that a leaf has similar vascularization as a heart?

_0119302

White-Tailed Kite

Elanus leucurus

Taken in Santa Rosa, CA, USA.

Thank you for your views, faves and comments. Deeply appreciated.

Pentax MX / Pentax 35mm f/3.5 lens / Ilford HP5+ / Harvey's Panthermic 777 (replenished) / Neg scan

Mosses, the taxonomic division Bryophyta or the bryophytes, are small, non-vascular flowerless plants that typically form dense green clumps or mats, often in damp or shady locations. The individual plants are usually composed of simple leaves that are generally only one cell thick, attached to a stem that may be branched or unbranched and has only a limited role in conducting water and nutrients. Although some species have conducting tissues, these are generally poorly developed and structurally different from similar tissue found in vascular plants. Mosses do not have seeds and after fertilisation develop sporophytes with unbranched stalks topped with single capsules containing spores. They are typically 0.2–10 cm tall, though some species are much larger. Dawsonia, the tallest moss in the world, can grow to 50 cm in height. Mosses are commonly confused with hornworts, liverworts and lichens. Mosses were formerly grouped with the hornworts and liverworts as non-vascular plants in the division bryophytes, all of them having the haploid gametophyte generation as the dominant phase of the life cycle. This contrasts with the pattern in all vascular plants (seed plants and pteridophytes), where the diploid sporophyte generation is dominant. Lichens may superficially resemble mosses, and sometimes have common names that include the word moss (e.g., reindeer moss or Iceland moss), but they are not related to mosses. Mosses are now classified on their own as the division Bryophyta. There are approximately 12,000 species. The main commercial significance of mosses is as the main constituent of peat (mostly the genus Sphagnum), although they are also used for decorative purposes, such as in gardens and in the florist trade. Traditional uses of mosses included as insulation and for the ability to absorb liquids up to 20 times their weight. 36392

Aki a toujours la classe, mais ce bandeau est en fait un équipement à part entière d’un expérience scientifique canadienne appelée Vascular Ageing. Il s’agit de suivre régulièrement le vieillissement de nos vaisseaux sanguins et de notre cœur pendant notre séjour dans l’espace. Le dispositif est complété par un maillot de corps et un appareil à ultrasons (qui se trouve être de conception française et que j’avais installé pendant ma première mission (👋 CNES France)). Le phénomène varie d’un astronaute à l’autre, mais globalement les scientifiques estiment que le système cardiovasculaire des astronautes vieillit de 10 à 20 ans au cours d’un séjour de six mois en impesanteur… avant de revenir relativement rapidement à son niveau d’avant une fois de retour sur Terre. Comprendre comment ce renversement se passe permettra des avancées spectaculaires en médecine ! Autant vous dire que quand Scott Kelly est revenu de sa mission d’un an consécutif, les chercheurs étaient dans les starting-blocks pour suivre sa réadaptation à la gravité, et ils n’ont toujours pas fini d’analyser les données récupérées. www.asc-csa.gc.ca/fra/sciences/vascular.asp

Aki is not practicing his ninja moves, but he’s wearing the headband (and the undershirt) for the Canadian experiment Vascular Aging, using an ultrasound machine that CNES built and I installed during my first mission 4 years ago! This experiment checks our blood vessels and hearts to see how they cope with being in space, as a model of ageing on earth: During a six-month space mission, astronaut's cardiovascular system can age by up to 10 or 20 years. We try not to think about it, and when we return to Earth everything goes back to normal, but for researchers it is extremely interesting to monitor this. Imagine having a person to study whose bodies seemingly age 20 years for six months, and then return to normal! If we can understand both sides of the process we could get closer to mastering it... www.asc-csa.gc.ca/eng/sciences/vascular.asp

Credits: ESA/NASA–T. Pesquet

527C3475

testing the new camera and lens on a leaf I found on the sidewalk. Only the 'skeleton' remained, creating a delicate lace of vasculature. Not bad for a kit lens

Macro detail of the leaf of a common beech Fagus sylvatica.

The leaf was new growth and not yet fully unfurled, giving the leaf a corrugated appearance and is seen here as bands of defocus compared to main vein ridges, due to a very narrow depth of field.

A fern (Polypodiopsida or Polypodiophyta) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. They differ from mosses by being vascular, i.e., having specialized tissues that conduct water and nutrients and in having life cycles in which the sporophyte is the dominant phase. Ferns have complex leaves called megaphylls, that are more complex than the microphylls of clubmosses. Most ferns are leptosporangiate ferns, sometimes referred to as true ferns. They produce coiled fiddleheads that uncoil and expand into fronds. The group includes about 10,560 known extant species. Ferns are defined here in the broad sense, being all of the Polypodiopsida, comprising both the leptosporangiate (Polypodiidae) and eusporangiate ferns, the latter itself comprising ferns other than those denominated true ferns, including horsetails or scouring rushes, whisk ferns, marattioid ferns, and ophioglossoid ferns. Ferns are not of major economic importance, but some are used for food, medicine, as biofertilizer, as ornamental plants and for remediating contaminated soil. 990

A fern (Polypodiopsida or Polypodiophyta) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. They differ from mosses by being vascular, i.e., having specialized tissues that conduct water and nutrients and in having life cycles in which the sporophyte is the dominant phase. Ferns have complex leaves called megaphylls, that are more complex than the microphylls of clubmosses. Most ferns are leptosporangiate ferns, sometimes referred to as true ferns. They produce coiled fiddleheads that uncoil and expand into fronds. The group includes about 10,560 known extant species. Ferns are defined here in the broad sense, being all of the Polypodiopsida, comprising both the leptosporangiate (Polypodiidae) and eusporangiate ferns, the latter itself comprising ferns other than those denominated true ferns, including horsetails or scouring rushes, whisk ferns, marattioid ferns, and ophioglossoid ferns. Ferns are not of major economic importance, but some are used for food, medicine, as biofertilizer, as ornamental plants and for remediating contaminated soil. 35014

leaf with the sun behind

Vascular Plants of the Osa Peninsula, Costa Rica

sweetgum.nybg.org/osa/index.php

Los Charcos de Osa

www.osaresearch.org/

Vascular blood