Answer: Chinodoxa luciliae does indeed fit the description, as do Scilla bifolia and S. siberica. All have grassy foliage and enjoy the same growing conditions. Glory of the Snow has clusters of bloom with upfacing flowers and reflexed petals, and squill usually has a pendant head with single blooms (S. litardierei features racemes of 10-30 flowers, but it's only hardy to zone 5). Both Chinodoxa and Scilla are great for naturalizing. I'll send an e-mail to Burpee to see if they can fill you in on their fall bulb offerings.
The leaves of both Chinodoxa and Scilla fade out during the summer, so you'll probably need to plant a complementary groundcover that'll take over the space during the summer, while allowing the bulbs to shine in the spiring. I would guess that Vinca minor would be a good companion. Enjoy!
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