PROF. TRAILL ON BOTANICAL NOTES FROM MURTHLY. 
131 
by the attacks of mites. The upper leaves and the flowers were 
rendered abortive, or distorted and twisted, often into tubular form. 
Trifolmm ininits. —A pretty large patch by the side of a road 
near the farm of Muirlands, in Murthly, showed great alterations 
of the flowenheads, many of which were much branched and had 
the flowers “virescent,” their parts being more or less like ill- 
developed leaves. Though I did not succeed in actually detecting 
mites in the specimens, the condition was so essentially similar to 
that produced by mites on other plants that I do not think there can 
be doubt as to their agency in this case. 
Ribes nigrum. —The swollen buds, characteristic of the too-well- 
known Currant Mite {Phytoptus Ribis., Westw.), showed themselves in 
numbers on two bushes in a garden in Caputh in spring; but 
burning the infested bushes put an end to the attack, none of the 
other bushes in the garden showing infection. 
Galium palustre and G. uliginosum both showed leaves rolled 
into tubes and distorted by the action of mites. ( Cecidophyes Galii., 
Karp.). 
Achillea ptarmica. —A few dwarf plants on the Moor of Murthly 
bore leaves rolled into narrow tubes, in the manner so characteristic 
of the action of gall-mites. Owing to its inconspicuous nature this 
gall is very easily overlooked. I had not previously met with it. 
Vero 7 iica officinalis. —The flower-buds of numerous plants in the 
slate quarries on Birnam Hill were galled by a Cecidomyia.^ or gall- 
midge, becoming fleshy or much swollen, as described by me in 
“Scottish Naturalist,” 1888, p. 326. 
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