A Bit of a Bindweed

Mike Wilcox has got me looking at Calystegia rather more closely than I have previously. Yesterday I collected multiple images of four Skye plants, which are roughly speaking C. sepium (twice), C. silvatica and C. pulchra. These are what I thought they were and Mike more or less agrees – but there are complications in this group.

The first C. sepium (Hedge Bindweed) has winged petioles:

Cal 1 f2 4 closeup

which is not really in the books but apparently is OK and within the range of C. sepium subsp. sepium.

The C. pulchra (Hairy Bindweed) is probably OK but I need to go and measure a few things to check for Calystegia x howittiorum (C. pulchra x silvatica):

A previously identified Calystegia silvatica subsp. silvatica (Large Bindweed) can be called var. zonata because of the zones of purplish colour on the outside of the flowers:

Cal 4 f3 3 cropped LR

The Lythrum salicaria (Purple-loosestrife) by the A855 in Portree is doing well this year with two robust plants, one on each side of the road.

Lythrum salicaria Portree LR

Lythrum salicaria in Portree

I added Scrophularia auriculata (Water Figwort) to the list for Trotternish and found a new site for Mentha x villosonervata (Sharp-toothed Mint (M. spicata x longifolia)) south of Portree close to where I spotted Hawthorn Shieldbug nymphs on Cotoneaster frigidus (Tree Cotoneaster):

Acanthosoma haemorrhoidale nymphs 3LR

Stephen Moran says “Hawthorn seems almost second choice up in the Highlands. Any Sorbus, Ilex and Cotoneaster is preferred. I noted some on holly and rowan on Tuesday slap bang next to hawthorn in full fruit…..where I was unable to find any nymphs at all.”

Holly seems a bit odd – the rest are all relatively close members of the Rosaceae family.

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