Appearance
This herbaceous perennial overwinters as a tuber deep in the soil. It sends out long rhizomes from which shoots develop which trail over the ground. These are densely covered with silvery green, deeply lobed leaves. The flower buds have inflated pale green calyces and the sepals are extended backward into a short spur. The relatively large and showy flowers are borne on long slender stalks and are golden yellow. After flowering, which takes place in mid-summer, the shoots die back and the plant remains dormant until the following year.Distribution
"Tropaeolum polyphyllum" is endemic to the central Andes in Chile and Argentina where it grows at heights of up to 3,000 metres above sea level. Its typical habitat is among scantily vegetated stony ground or on scree where it forms small hummocks of grey-green foliage studded with yellow flowers. In this area, summer droughts may last for several months and what precipitation there is, falls mainly in the winter. The plant has small, rounded tubers which are buried deep in the ground and which enable it to survive being covered with snow for several months and withstand temperatures down to −20 °C.References:
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