Hippeastrum reticulatum, the netted-veined amaryllis, is a flowering perennial herbaceous bulbous plant, in the family Amaryllidaceae, native to South America.
Hippeastrum reticulatum is a bulbous, terrestrial herb with 3.2âÂÂ4.8 cm wide bulbs bearing lanceolate to oblanceolate, pseudopetiolate, up to 45 cm long, and 3.8âÂÂ5.0 cm wide leaves.
The 6âÂÂ8-flowered, scapose inflorescence with a 40.0âÂÂ45.0 cm long, and 0.7âÂÂ0.9 cm wide scape bears pedicellate, pink to white flowers. Each locule has up to 12 ovules. The capsule fruit with a bright red interior bears globose seeds.
The chromosome count is 2n = 22.
Hippeastrum reticulatum was one of the earliest Hippeastrums to be discovered and was introduced to Europe in 1777 by Edward Whitaker Gray from Brazil, as documented by William Aiton in his Hortus Kewensis (1789). It was described by Charles Louis L'Héritier de Brutelle in 1788 as one of a number of species of Amaryllis, Amaryllis reticulata, it was later recognised by Herbert in 1824 as a member of the separate South American genus Hippeastrum rather than Amaryllis which is confined to South Africa, and thus as Hippeastrum reticulatum <small>(L'Hér.) Herb.</small>, Bot. Mag. 51: t. 2475 (1824).
Some sources follow Herbert (1837) in stating that there are two varieties, reticulatum and striatifolium. A third variety, strictum Herb., is sometimes also included. This division into varieties is not accepted by the World Checklist.
The specific epithet reticulatum is Latin for "netted", referring to the venation of the petals.
From Argentina to Brazil, growing in wet sandy soil. In Brazil they are found under Mussununga forest whose smaller canopy allows more light to reach the forest floor.
Hippeastrum reticulatum blooms in late summer to autumn, with an active growing season of autumn to early winter, and requires a semi-dormant period of 4âÂÂ6 weeks during late winter and early spring. The species is unusual amongst Hippeastrum, in being self-fertile.
It is vulnerable to local extinction.