A cloth of darkness inlaid with fireflies;
flashes of lightning;
a mighty cloud mass sensed from thunder;
elephants trumpeting;
the east wind scented by blossoming ketaki;
falling rain:

I know not how a man can bear the nights that hold all these
when separated from his love.

I thought he honored the parallel grammatical forms too much. See Ezra Pound.

I didn't know kewra was the same as ketaki. It's used even today, as a flavoring for puddings and such. It also figures in an interesting myth (from http://www.gurjari.net/ico/Mystica/html/brahma.htm):

"There are several reasons that Brahma is no longer worshipped... Attempting to prove his superiority, Brahma lied to Vishnu, while the ketaki flower stood false witness for him. For this, Brahma was cursed by Shiva that he would never be worshipped on earth, nor would the ketaki ever be offered in worship..."

So that's what kewra is!