Been doing some digging into toadstools.
Toadstools and mushrooms in dreams are:
In a dream, these are indications of stages of stupor or intoxication. it is known that many toadstools contain alkaloids (poisonous substances) which induce such states. Mushrooms and toadstools thus have a sexual significance; the parallel can be seen in expressions like "intoxicated with love".
http://www.dhyansanjivani.org/M_DREAM.ASP
Toadstools are also representative of Jupiter.
In Lyly's Euphues the following passage appears: 'I am of this minde with Homer, that as the Snayle that crept out of hir shell was turned eftsoones into a Toad, and thereby was forced to make a stoole to sit on, disdaining hir own house...'
I can't help seeing a connection here with the snail in the Nine and the toadstools in this card.
Also look at the actual word toad stool a stool for a toad and look how staid and toadlike this king is. Afterall, toadstools grow in areas where there is little movement allowing them time to grow, dank, dark places.
Fungi are without chlorophyll and, like other non-green plants and all animals, depend upon ready-made sources of carbon for their food supplies. For this reason they are of necessity parasites, growing in and upon living animals or plants and preying upon their hosts for the food they require, consuming the reserve materials stored by the latter in their bodies or (and) breaking down the organic substances of which these bodies are actually composed, or saprophytes, using the food products of green plants such as starch and sugar, or living upon organic materials derived from the decay of plant and animal bodies after death.
http://journeytoforever.org/farm_library/rayner/rayner1.html
There is so much foliage around this king - does it portend resting on your laurels, complacency in your sucess leading to erosion and death of all you have gained thus far...?