Zephyranthes macrosiphon is a broadleaf deciduous perennial bulb / corm / tuber with green foliage. In fall, spring and summer pink flowers emerge. Grows well with sun - mostly sun and standing water - regular water. Does well in average and well-drained soil. A good option if you're seeking something verticillium wilt resistant.
One of the larger flowered species, from eastern Mexico, with broader (5mm), strappy, slightly glaucous leaves, deciduous in cold years, emerge from shallow, long necked bulbs. Very showy, soft pink, six petalled, starry flowers (10cm) are borne at any time of the year, even while leafless through winter.
Forms loose clumps of self sown seedlings and plays well with others, combine with everything for additional yet unobtrusive impact.
Easily grown in any soil with at least some summer moisture, extended periods of neglect are survived though not enjoyed. Very tolerant of clay and wet feet.