Brit Bot Book

Front cover of Reader's Digest Field Guide to the Wild Flowers of Britain
Reader’s Digest Field Guide to the Wild Flowers of Britain, J.R. Press et al, illustrated Leonora Box et al (1981)

This is probably the best introduction to British wild flowers that I’ve seen: drawings, photographs and text complement each other perfectly over more than four hundred pages. Despite being compact, it’s a little heavy to be a good field guide, but it would be useful in every British field, wasteland and marsh. From Indian balsam (Impatiens glandulifera) to flowering-rush (Butomus umbellatus) by way of green alkanet (Pentaglottis sempervirens), it’s got a lot, if not the lot (no Mycelis muralis, or wall lettuce, for example). The drawings are skilful, detailed, and often show the plant growing with different species in its habitat, which prepares the eye for identifying it in situ. The drawings also often have the adventitious additions that make David N. Pegler’s Pocket Guide to Mushrooms and Toadstools more enjoyable too, like the half-brick with Canadian fleabane (Conyza canadensis), the chewing-gum wrapper with sea mayweed (Matricaria maritima) and the frog with water violet (Hottonia palustris).

The drawings dominate the page devoted to each plant, but there’s a small photograph of a living specimen too, though “small” doesn’t always mean undramatic. Sea thrift (Armeria maritima) is shown growing quietly on a cliff-top with swirling sea and towering rocks beyond and below it. The photo sums up the book: wild flowers are often delicate and unobtrusive, but they illustrate some grand themes of evolution and biology, from ecological webs to mimicry, parasitism and toxicology: dead-nettles (Lamium spp.) mimick nettles, broomrape (Orobanche spp.) parasitizes broom, clover and more, and lots of British plants can kill you, sicken you or drive you insane, from hemlock (Conium maculatum) to henbane (Hyoscyamus niger). The book explores some grand themes of culture too: the text mixes serious botany with folklore, cuisine, herbalism, and literature. Pignuts (Conopodium majus) appear in The Tempest, for example, and in Ireland “were thought to be the food of leprachauns”. The etymologies aren’t always trustworthy — the “-ard” of “mustard” doesn’t mean ardente, “burning” — but that makes the book itself part of folklore and adds to the plants’ appeal. Highly recommended in this first edition.

Electrify Your Eyes

Front cover of The Spark of Life by Frances AshcroftThe Spark of Life: Electricity in the Human Body, Frances Ashcroft (Penguin 2013)

“Electricity in the Human Body” is the subtitle of this book. Make that the goat, frog, eel, shark, torpedo-ray, snake, platypus, spiny anteater, sooty shearwater and fruit-fly body too. And if Venus flytraps, maize and algae have bodies, throw them in next. Frances Ashcroft gives you a bargeload of buzz for your buck, a shedload of shock for your shekel: The Spark of Life describes the use of electricity by many different forms of life. But it discusses death a lot too, from lightning-strikes and electric chairs to heart-attacks and toxicology. Poisons can be a cheap and highly effective way of interfering with the electro-chemistry of the body:

The importance of sodium and potassium channels in generating the nerve impulse is demonstrated by the fact that a vast array of poisons from spiders, shellfish, sea anemones, frogs, snakes, scorpions and many other exotic creatures interact with these channels and thereby modify the function of nerve and muscle. … The tetrodotoxin contained in the liver and other tissues of this fish [the fugu or puffer-fish, Takifugu spp., Lagocephalus spp., etc] is a potent blocker of the sodium channels found in your nerves and skeletal muscles. It causes numbness and tingling of the lips and mouth within as little as thirty minutes … This sensation of “pins and needles” spreads rapidly to the face and neck, moves onto the fingers and toes, and is then followed by gradual paralysis of the skeletal muscles … Ultimately the respiratory muscles are paralysed, which can be fatal. The heart is not affected, as it has a different kind of sodium channel that is far less sensitive to tetrodotoxin. The toxin is also unable to cross the blood-brain barrier so that, rather horrifyingly, although unable to move and near death, the patient remains conscious. (ch. 3, “Acting on Impulse”, pp. 69-70)

In short, fugu-poisoning is the opposite of electrocution: it’s the absence rather than the excess of electricity that kills its victims. Those “channels” are a reminder that electro-chemistry could also be called electro-mechanics: unlike an electricity-filled computer, an electricity-filled body has moving parts – and in more ways than one. Our muscles move because ions move in and out of our cells. This means that a body has to be wet inside, not dry like a computer, but it’s easy to imagine a human brain controlling a robotic body. But would a brain still be conscious if it became metal-and-plastic too? Perhaps a brain has to be both soggy and sparky to be conscious.

The electrical nature of the brain certainly seems important, though that may be a superstitious conclusion. Electricity is a mysterious phenomenon and so is consciousness, so they seem to go together well. Ashcroft writes a lot about the sense-organs and the data they supply to the brain, but like all scientists she cannot explain how those data are turned into conscious experience as the maths-engine of the brain applies its neuro-functions and neuro-algorithms. However, she does suggest ways in which our consciousness might be expanded in future. Humans have colour vision, based on the three types of cone-cells in our eyes:

Most mammals, such as cats and dogs, have only two types of cone photopigment and so see only a limited range of colour … Other animals live in a world entirely without colour. But humans should not be too complacent, for we are far from having the best colour vision in the animal world and lag far behind the mantis shrimp, which enjoys ten or more different visual pigments. Even tropical fish possess four or five types of cones. (ch. 9, “The Doors of Perception”, pg. 199)

Bio-engineering may one day sharpen and extend all our senses, from sight and hearing to touch, taste and smell. It may also give us new senses, like the ability to form sound-pictures like bats and detect infra-red like pit-vipers. And why not X-rays and radio-waves too? It’s an exciting prospect, but in a sense it won’t be anything new: our new senses, like our old ones, will depend on nerve-impulses and the way they’re mashed and mathed in that handful of “electrified clay” known as the brain.

“Electrified clay” is Shelley’s phrase: like his wife Mary, he was fascinated by the early electric experiments of the Italian scientists Luigi Galvani and Alessandro Volta. Mary turned her fascination into a book called Frankenstein (1818) and her invention is part of the scientific history in this book. The story of bio-electricity is still going strong: there are electric mysteries in all kinds of bodies waiting to be solved. Maybe consciousness is one of them. And if science proves unable to crack consciousness, it’s certainly able to expand it. Reading this book is one way to experience the mind-expanding powers of science, but seeing like a mantis shrimp would be good too.

For the Love of Mycology

Mushrooms, Roger Phillips, assisted by Derek Reid, Ronald Rayner, Geoffrey Kibby, and Alick Henrici, designed by Jill Bryan (MacMillan 2006)

In 1981, Roger Phillips began his career in natural history publishing with a book on mushrooms. In 2006, he was back for another bite at the chanterelle. And it would have been a fitting way to end his career, because this is one of the most important books ever published on fungi. It puts its best photo forward for hundreds of pages and hundreds of species, all the way from the massive, like the Giant Puffball, Calvatia gigantea, which can be bigger than a man’s head, to the minute, like the Conifer Disco, Lachnellula subtilissima, which is smaller than a baby’s fingernail. En route, it takes in the gorgeous, the gaudy, and the grotesque, like the Angel’s Wings, Pleurocybella porrigens, the Vermilion Waxcap, Hygrocybe miniata, and the Goliath Webcap, Cortarius praestans. With the g-crew come the delicious, the deadly, and the delicate: the Oyster Mushroom, Pleurotus ostreatus, the Destroying Angel, Amanita virosa, and the Milky Bonnet, Hemimycena lactea. And let’s not forget the phantasmagoric, the phosphorescent, and the phallic: the Devil’s Fingers, Clathrus archeri, the Jack O’ Lantern, Omphalotus illudens, and the Stinkhorn, Phallus impudicus. Which is Latin for “shameless dick”. Fungi can also look like ears, brains, and birds’-nests: the Jelly Ear, Auricularia auricula-judaei, the Morel, Morchella esculenta, and the Common Bird’s Nest, Crucibulum laeve. Oh, and they can look like cages, clubs, and coral too: the Red Cage, Clathrus ruber, the Giant Club, Clavariadelphus pistillarius, and the Violet Coral, Clavaria zollingeri.

And that covers only their appeal, or offence, to the eye and the taste-buds: they can also appeal to, or offend, the nose and fingertips. On olfactory side there are the Coconut Milkcap, Lactarius glyciosmus, the Pear Fibrecap, Inocybe fraudans, the Geranium Brittlegill, Russula fellea, the Mousepee Pinkgill, Entoloma incanum, the Iodine Bolete and Bonnet, Bolitus impolitus and Mycena filopes, and the “Stinking” set: the Brittlegill, Russula foetens, the Dapperling pair Lepiota cristata and L. felina, and the Earthfan, Thelephora palmata. On the tactile side, there are the various Velvets: the Bolete, Suillus variegatus, the Brittlegill, Russula violeipes, the Shank, Flammulina velvutipes, the Shield, Pluteus umbrosus, the Tooth, Hydnellum spongiosipes, and the Toughshank, Kuehneromyces mutabilis. There are too many shaggies, slimies, and slipperies to list, like the Shaggy Parasol, Macrolepiota rhadoces, the Slimy Waxcap, Hygrocybe irrigata, and the Slippery Jack, Suillus luteus. All in all, mushrooms make me muse on Middle-earth. Tolkien’s world is full of richness and variety. So is the world of fungi. The folk and things of Middle-earth can be beautiful or ugly, delicate or sturdy, colourful or drab, tasty or deadly, lovers of light or dwellers in dark. Mushrooms, toadstools, and their smaller relatives are the same. You could find one or more species in this book to match all of Tolkien’s creations: men, wizards, hobbits, elves, dwarves, orcs, trolls, ents, and more. The Cortinarius genus is hobbit-like, for example: stocky, sturdy, and coloured mostly in earthy ochres, yellows, and reds. More elf- and wizard-like are the genera Lepiota and Macrolepiota: these mushrooms are taller and more attractively proportioned. For pre-Tolkienean elves, look to the small and slender Micromphale, Omphalina and Mycena genera, shaped like little umbrellas, bonnets, and parachutes.

For the dark side of Tolkien’s world, look everywhere: almost every group of fungi can supply poisons and sicken or slay the incautious or ignorant. But the deadliest of all are the Amanitas. There’s something suitably and sardonically Sauronic about the modus operandi of the Deathcap, Amanita phalloides:

Poisoning by the Deathcap is characterized by a delay of 6 to 24 hours between ingestion and the onset of symptoms, during which time the cells of the liver and kidney are attacked… The next stage is one of prolonged and violent vomiting and diarrhoea accompanied by severe abdominal pains, lasting for a day or more. Typically this is followed by an apparent recovery, when the victim may be released from hospital or think their ordeal is over, but death results from kidney and liver failure in a few days. (pg. 144-45)

No antidote has yet been discovered to the amatoxins, as the most dangerous compounds are called, and the mortality rate from Amanita poisoning is “still up to 90%”. The Fly Agaric, Amanita muscaria, with its red, white-spotted cap, is the most famous in the genus, but not responsible for the most fatalities. It’s trippily toxic: “a strong hallucinogen and intoxicant, and used as such by the Sami of northern Scandinavia” (pg. 140). Phillips suggests that the Sami began to use A. muscaria by “observing its effects on reindeer”, which “like it so much that all one has to do to round up a wandering herd is to scatter pieces of Fly Agaric on the ground.” Elsewhere in Europe, it was used against flies: the common English name “comes from the practice of breaking the cap into platefuls of milk… to stupefy flies.” Fungi are not plants and form a separate kingdom in biological classification, but they are like plants in the way they can be either delicious, deadly, or dementing.

But if some weren’t so delicious, some others wouldn’t have dealt death so often: the Amanitas are similar in appearance to the Wood mushrooms in the genus Agaricus and can be found in similar places. Agaricus contains some of the most widely eaten of all mushrooms, including the Cultivated Mushroom, A. bisporus, “believed to be the wild form of the many cultivated crop varieties” (pg. 242). But literally cultivated mushrooms don’t compare to wild-grown: I can still remember the richness and flavour of some Field Mushrooms, A. campestris, I picked near the witches’ haunt of Pendle Hill in Lancashire. My other gastro-mycological excursions have included wild-grown puffball and a large Oyster Mushroom that had sprouted from the wood of a sea-side ice-cream stand. It fell off under its own weight, or I wouldn’t have carried it off: Oyster Mushrooms aren’t just good to eat, they’re also good to look at and I would have left it undisturbed otherwise. But picking a mushroom is rather like picking an apple or pear: the visible part is a fruiting body that sprouts from the thread-like hyphae growing in soil, wood, compost, or dung. So you don’t necessarily kill a fungus by picking the part you can see, though you do obviously interfere with its reproduction. The part you can see is what this book is about: unlike David N. Pegler’s Pocket Guide to Mushrooms and Toadstools, there are no drawings of the microscopic spores, merely descriptions: for example, “9-12×5-7μ, elliptical to almond-shaped. Spore-print dark purplish-brown. Chrysocystidia absent. Cheilocystidia lageniform, thin-walled” is in the entry for the Blueleg Brownie, Psilocybe cyanescens.

The fungus itself is described as “hallucinogenic” and “said to be extremely strong” (pg. 253). This book isn’t just for those seeking succulence: it can guide the searcher for synaesthesia too. The Liberty Cap or Magic Mushroom, Psilocybe semilanceata, doesn’t just open the doors of perception: it can throw down the walls of the senses too and make you hear sights or taste colours. The psycho-active psilocybes are all covered and described, but I’ve preferred to leave psycho-mycology alone and get my mental thrills from the look of, and language about, fungi. The scientific names, as always, are interesting, informative, and occasionally uninspired: with a common name like Angel’s Wings, Pleurocybella porrigens has a disappointing scientific name. But there’s a surprisingly complex descriptive vocabulary to learn if you’re interested in acquiring an expertise in these apparently primitive plant-alikes. You’ll even have to dabble in chemistry: the simplest way to distinguish some species is to dip them. The “chrysocystidia” mentioned above are cells “that turn yellowish” – Greek chrysos, “golden”, is hyperbolic – in “alkali solutions”. That’s from the glossary on page 13, but the weird and wonderful words – chlamydospore, dendrophyses, gloeocystidia, lageniform, merulioid, sphaeropedunculate – aren’t illustrated, only defined. This isn’t a textbook of mycology, but an identification guide. And I wouldn’t say it was a work of art like Pegler’s Pocket Guide. It’s well-designed and aesthetically pleasing, but photographs have a superficiality, even a triviality, that Pegler’s drawings don’t. Yes, you can see exactly how the fungi look from a photograph, but there’s no room for the wit and quirkiness I described in my review of the Pocket Guide: the closest you get to the extra-mycological touches I described there is an occasional pine-cone, as in the photos for the Pine Milkcap, Lactarius musteus, the Pinecone Cap, Strobilurus tenacellus, and the Rosy Spike, Gomphidius roseus.

But David Pegler covered far fewer species in a smaller and more subjective book. His science was stronger because he included images of spores, but Roger Phillips has contributed more to mycology, let alone to other fields of natural history. If I had to choose between the two books, I would choose the Pocket Guide, because it’s richer and earthier, and also more minor, in a way that suits its topic better. Fortunately, I don’t have to choose: both books are available for mycophiles and both help explain what is fascinating about fungi. But there are universal aspects to their appeal, beside the particularity of their fungality: maths, the Magistra Mundi, or Mistress of the World, reigns among mushrooms as She reigns everywhere else. Like beetles, though rather more so, fungi are topological variants on a theme: evolution has shaped, squeezed, slendered, squattened, and swollen them over millions of years to produce the huge variety on display in this book. I think architecture can illuminate how they grow: fungi face some of the same problems as architects in erecting and securing their fruiting bodies, but they’re working with less sturdy material. Fungal flesh doesn’t have the toughness and flexibility of wood or the solidity and sturdiness of stone, but it can do surprising things: the Pavement Mushroom, Agaricus bitorquis, is “sometimes found growing through asphalt” (pg. 241).

“Pavement Mushroom”, like “Orange Peel Fungus”, “Purple Stocking Webcap”, “Rooting Poisonpie”, and “Snaketongue Truffleclub”, is one of the odd common names that may catch your eye in the detailed index, which offers specific and generic names, including the outmoded ones that Phillips wanted to update from his early book. But he’s expanded as well as revised, adding some oversea species that “travellers might find on their visits abroad” (introduction, pg. 6). Or might find unexpectedly at home: the Plantpot Dapperling, Leucocoprinus birnbaumii, is a “tropical species that can be found in heated greenhouses” and is shown growing with a potted cactus on page 135. Not illustrated, but mentioned in the entry for the Deathcap, is the “tropical fungus Galerina sulcipes”, which “has a higher α-amanitin content” and is “occasionally found in hothouses” (pg. 145). That would be a sinister note to end on, so instead I’ll end on the Scarlet Elfcup, Sacroscypha austriaca. This is one of my favourite fungi in the book. It is indeed scarlet, it does indeed look like a cup, in the early stages of its growth at least, and its common name is a reminder of why mushrooms are associated with magic and fungi with the fantastic. They can appear very suddenly in unexpected places and have a special association with the melancholy and mystery of autumn. The more elaborate and evolved plant and animal kingdoms are more obvious and found in more places, but they couldn’t exist without fungi, which “break down leaf litter and dead wood and thus ensure that the surface of the world has a fertile layer of soil rather than being a heap of detritus” (pg. 6). In other words: no fungi, no flowers, firs, or figs. In short: no mushrooms, no man. The fungal kingdom isn’t, and can’t be, conscious of the debt owed to it by the other two kingdoms, but this book can be seen as part payment. To see the inhabitants of that mycological Middle-earth in all their variety and strangeness, look no further, because you’ll find no fungaller.