Prime Minister Narendra Modi today rued that successive governments had sought to forget India's traditional medicinal systems instead of promoting them.<br/><br/>Little was done to promote the traditional systems of medicine and wellness disciplines such as yoga in the pre- and post-independence eras, Modi said after inaugurating a research institute at yoga guru Baba Ramdev's Patanjali Yogpeeth in Haridwar.<br/><br/>Modi also released an encyclopaedia compiled over ten years by Ramdev's aide, Acharya Balkrishna. Titled "World Herbal Encyclopaedia", it looks at of over 70000 herbal species found across the country.<br/><br/>Ramdev, who conferred the title of "Rashtra Rishi" on Modi for his "relentless efforts to build a clean, strong and united India", said in his address the country was bound to prosper under Modi's "illustrious leadership".<br/><br/>The prime minister said the honour had come as a surprise to him.<br/><br/>The prime minister arrived at Patanjali from Kedarnath, where he prayed at an 8th-century shrine dedicated to Lord Shiva.