Empalement. Sheath two valves, ragged, and, remaining.
Blossom, of six petals, oblong, equal, inversely heart-shaped, remaining, spreading.
Chives. Three threads, upright, awl-shaped. Tips almost simple, and large.
Pointal. Seed-bud beneath. Shaft thread-shaped and erect. Summit cut into three, concave and reflected.
Seed-vessel. Capsule oblong, three-sided, three cells, cells compressed, three valves.
Seeds many, flat, rough, nearly semicircular.
SPECIFIC CHARACTER.
Aristea, foliis ensiformibus, radicalibus; floribus capitatis, cyaneis.
Aristea with sword-shaped leaves growing from the root; the flowers grow in heads, and are of a bright blue.
REFERENCE TO THE PLATE.