Anemonoides ranunculoides
Anemonoides ranunculoides (syn. "Anemone ranunculoides"), the yellow anemone, yellow wood anemone, or buttercup anemone, is a species of herbaceous perennial plant that grows in forests across Europe to western Asia, and less frequently in the Mediterranean region. It is occasionally found as a garden escape. Description. Growing to tall, the plant is herbaceous, dying back down to its root-like rhizomes by mid summer. The rhizomes spread just below the earth surface and multiply quickly, contributing to its rapid spread in woodland conditions. The flower is about diameter, with from five to eight petal-like segments (actually tepals ) of rich yellow colouring. In its native range, it flowers between March and May. Distribution. The native range of "Anemonoides ranunculoides" extends across Continental Europe to southwest Siberia, reaching as far south as the Caucasus Mountains in Turkey. The species has been introduced into Great Britain and elsewhere. In Canada, there is a naturalized population at a well-known site in Quebec. Cultivation. The plant is widely grown as a garden plant, especially by rock garden and alpine garden enthusiasts. It has been awarded an Award of Garden Merit or AGM, H4 (hardy throughout the British Isles) by the Royal  Horticultural Society. The double-flowered form 'Pleniflora' (sometimes listed as 'Flore Pleno') is also a recipient of the award. "Anemone ranunculoides" 'Frank Waley', a larger-growing, more robust cultivar, is sometimes available, as are the miniature subspecies "A. ranunculoides" subsp. "wockeana" and a selection known as "A. ranunculoides" 'Laciniata', with finely divided leaves. Related species and hybrids. Wood anemone, "Anemonoides nemorosa", is similar to "A. ranunculoides" but has slightly larger flowers (usually white, but they may be pinkish or lilac, often with a darker tint to the back of the 'petals'). "Anemonoides" × "lipsiensis" is a hybrid between these two  species and has pale yellow flowers; it is often found where the two parent species grow near each other. "A." × "lipsiensis" 'Pallida' is the best-known result of this cross. It has been awarded the AGM.