As the days get warmer and we see less rain and more sunshine, your vine will likely retain more buds and bloom. I collected seeds from some plants that bloomed this spring. The plants have bulbs under the soil surface and long leaves that flop over and touch the ground. The lily-shaped flowers are at the end of a long, cylindrical stalk. The seeds you sent look like those from amaryllis.
Good drainage is important.
The papery black seeds will grow new bulbs when planted as soon as possible after harvest. You can float the seeds in water for a few days to encourage germination. Sow, just covering the seed, in individual pots filled with a well-draining compost. Keep the seedlings in a warm place where there is good light or keep them outdoors in bright shade. Watch for snails.