The Kaitake flower is not supposed to be used for worship of Shiva or for worship of the gods. Pushkar Dantam mentions it in this hymn. Bhai Mavakant has quoted it once, more than once, Swami Turiananda. But anyway, so even Chad GPT agrees. You should not use the Kaitake Flower for worship.
Shiva Mahimna Stotra is a Sanskrit composition in the devotion to Shiva that is believed to have been composed by a Gandharva named Pushpadanta. It lists Shiva's various achievements and qualities. Swami Sarvapriyananda speaks on these verses on the auspicious occasion of Shivaratri.