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Thale Cress Arabidopsis thaliana is now the commonest pavement plant in Waterloo. Each year it dominates the walls and cracks for just a couple of weeks, the rest of the year it is pretty inconspicuous, though I have seen it in flower for 10 months of the year, March to December. Native to Eurasia and North Africa it has been introduced and naturalised in the Americas, Africa, Australia and New Zealand. It was the first plant to have it’s genome sequenced in 2000, as it is has relatively few base pairs, just around 135 million. The life cycle can be completed in just 6 weeks.
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In March / April been restricted to the flora of the Waterloo area (but that is what I am studying anyway). Principally the streets and the Rimrose Valley.
There is an interesting article on the flowering times of urban Cambridge by Chris PrestonThe phenology of an urban street flora: a transect study in British and Irish Botany at https://britishandirishbotany.org/index.php/bib/article/view/44
There is an interesting article on the flowering times of urban Cambridge by Chris PrestonThe phenology of an urban street flora: a transect study in British and Irish Botany at https://britishandirishbotany.org/index.php/bib/article/view/44
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Mouse-ear leaves, it’s how it gets the name. -
Cherry in flower. -
Garlic Mustard -
Slender Speedwell Veronica filiformis. -
Field Horsetail in spore -
Wood Forget-me-not, as pavement plants originating from gardens. -
Honesty -
Silver Birch -
Larch coming into leaf. -
Danish Scurvy Grass -
Hornbeam catkins -
cherry blossom -
Gorse -
Common Liverwort Marchantia polymorpha ssp.ruderalis -
Wild Cherry -
Ivy-leaved Speedwell -
Common Whitlow Grass -
Ivy-leaved Toadflax on wall -
Dogwood flower bud -
Ash bud -
Buddleia growing on chimney -
Poplar catkins -
Green Alkanet -
Hairy Bittercress -
Bonfire Moss Funaria hygrometrica -
Coltsfoot -
Grey-cushioned Grimmia Moss Grimmia pulvinata -
Spring Beauty as wall top plant -
Marble Gall Andricus kollari gall on oak -
Common Whitlow Grass as wall top plant -
Rue- leaved Saxifrage as wall top plant -
Red - dead nettle -
Rust fungus Puccinia phragmitis on dock leaf -
Herb Robert -
Gall on willow, but it’s causer is still uncertain - virus or phytoplasma probably. Very common on most willows, most noticeable in winter. -
Daisy -
Coltsfoot -
Sunrise over Waterloo -
Garden Pansy in pavement cracks -
Sticky Mouse-ear flower buds -
Polypody Fern