rhodes cape colony cape floral kingdom fynbos amazon rainforest western cape threatened species pelargoniums smell scent buchu fynos medicinal plants protea restio erica bulbs medicine food dyes crafts ethno-botanical knowledge skeleton stream skeleton gorge table mountain wild cedar cedarberg clanwilliam cedar endangered species devil’s peak fernwood peak castle rock nursery buttress hiking yellowwood climate soil conditions colonel bird lady ann barnard tree ferns cycads harold pearson cycad university of cape town botany gymnosperm cedars kew gardens sir christopher wren st paul's cathedral canopy walkway boomslang centenary birds hadeda lemon dove tree aloe wild almond jan van riebeeck dutch east india company apartheid concert stage summer sunset concerts acacia taxonomy vachellia cecil john rhodes camphor queen victoria namaqualand spring flowers west coast strelitzia lawn egyptian geese moyo guinea fowl frank mcewan shona artists kirstenbosch tea room zimbabwe rhodesia sculpture