ephemeral (lasting for a markedly brief time; living or lasting only for a day, as certain plants or insects do)
hemeralopia (a visual defect characterized by the inability to see as clearly in bright light as in dim light)
hemerocallis (day lily)
Definitions are taken from:
The American Heritage® Dictionary of the English Language, Third Edition copyright © 1992 by Houghton Mifflin Company.
Electronic version licensed from InfoSoft International, Inc. All rights reserved.
Webster's Third New International Dictionary, Unabridged. Merriam-Webster, 2002.
https://unabridged.merriam-webster.com (30 Sep. 2006).
English-Word Information: Word Info about English Vocabulary (wordinfo.info).