Tuesday 14 April 2015

Oare Gunpowder Works on the first really hot day of the year!

A wonderful wander round the Country Park full of munitions production archaeology and natural history. Three Peacock, two Brimstone and four female Orangetip (?) butterflies. A nesting pair of Bluetits, Sparrowhawk, Blackcaps, Chiffchaffs, Chaffinches, Greater Spotted Woodpecker, Green Spotted Woodpecker, Woodpigeons, overflying Herring Gulls, Black-headed Gull.

Yellow-legged Mining Bees, Andrena flavipes ( a guess!), Lasioglossum poss calceatum, Episyrphus balteatus, Sphaerophoria sp.,

Ivy-leaved Speedwell, Veronica hederifolia, was in at least one spot in the ancient (rather dominated by sycamore) woodland, quite a common plant generally across most of the country, an early introduction by man (intended or not) and I think a very nice little plant to see. It is a "winter annual", probably germinating in autumn, spreading by seed. As the fruit ripens it bends downward, allowing the ants to collect the seed, attracted by the scent of the associated oily appendage.

Single small light lilac pink flowers with long stalks in the leaf axils, heart-shaped sepals (not always easy to see), petals short so said to be almost hidden in among the (claimed to be) slightly larger sepals, leaves with short stalks, veins only from base of the 5-7 lobed leaf, not from a central midrib, therefore "palmately veined leaves" (the only speedwell like this I think), small, softly hairy low-spreading plants, photos attached. Like the other Veronicas it has now been reclassified from the Scrophulariaceae (Figwort family) into the Plantaginaceae (Plantain family).

There are actually two recognised subspecies, ssp hederifolia (2N = 54) and ssp lucorum - aka sublobata (2N = 36), with different chromosome complements (Tetraploid and Hexaploid, as the seed is fertile?), I tend to think this is the latter, with longer flower stalks and lilac flowers with pale anthers which is rather less common, but typically found in woodland rather than arable/verges, although I think you really need it in fruit as well to give it anything like a reasonable guess (BSBI have an excellent online plant crib)! This subspecies does not seem to be recorded in this NBN 10K square.





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