I studied Butterfly Rock today. The top, bare when I put it in The Waste in March 2005, is now a complex tapestry of several moss and lichen species scattered with bits of berry, snail shell and bird droppings like the top of a decorated cake. It just does this, unbidden by me, despite being in full sun in no shady or moisty place. It is, of course, a fine bird perch and their detritus has no doubt helped produce a nutrient layer.
The colours on this rock at this autumn season are a delight: dark and pale green, greenish yellow, black, brown and greenish grey.
In addition to the grasses, the vegetation around the rock (all visible in the picture) includes white clover, smooth hawksbeard, selfheal, herb robert, knapweed, ragwort, marsh thistle, greater plantain, sorrel and narrow-leaved vetch
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