Alocasia fornicata lime aurea is a yellow-green variegated form of Alocasia fornicata, a broadly distributed Asian species with a long botanical record. This guide sets out what the plant is, what Aroidpedia records about the species, how lime aurea variegation behaves, and how to care for it in a UK home.
What is Alocasia fornicata lime aurea?
"Lime aurea" is a descriptive trade name for an aurea-type variegation with a brighter, more yellow-green cast than the warm gold of a standard aurea. Aurea variegation in general means yellow to golden sectors where chlorophyll is reduced but carotenoid pigments are retained. The lime tone sits towards the green end of that range, between our mint form, which is a pale green, and the golden aurea form. Lime aurea reflects a specific carotenoid profile within the broader aurea type, a balance of xanthophylls and residual chlorophyll that produces an acid chartreuse-yellow rather than the warmer, more golden tone of standard aurea. It is the final and perhaps most vivid colour expression in the fornicata variegated family.
It is worth being plain about the documentation. Aroidpedia has an entry for Alocasia fornicata itself, but it lists no variegated forms, cultivars or hybrids for the species, and there is no Aroidpedia entry for a lime aurea form. Who selected it, when and where is therefore not documented, and we do not guess. The species information below comes from the Aroidpedia species entry; the variegation points are general to aurea-type plants. For the plant without variegation, see our Alocasia fornicata species guide and the complete guide to Alocasia fornicata.
Origin and naming of Alocasia fornicata
Aroidpedia gives the native range as Assam, Bangladesh, the eastern Himalaya, India (including Manipur, Mizoram and Tripura), Laos, Myanmar, Sri Lanka, Thailand and Vietnam, in a humid subtropical climate of about 1,200 mm annual rainfall and humidity of roughly 60 to 70 per cent. That is a substantial sweep of subtropical and tropical Asia, rather than one of the narrow island endemic ranges that supply most jewel Alocasia in current collector cultivation.
Aroidpedia lists Arum fornicatum, credited to William Roxburgh in Flora Indica (1832), as a homotypic synonym and cites the 1841 Enumeratio plantarum as the protologue; it does not name the author of the current combination. Our own notes credit Schott with the transfer to Alocasia, and the 1841 work is Kunth's, though we have not been able to confirm that against Aroidpedia. It also separates this plant from Robert Wight's 1846 Arum fornicatum, which is a different taxon (a synonym of Alocasia decipiens). The epithet derives from the Latin fornix, arched or vaulted. Local names recorded are "Shola kachu" (Bengali) and "Baibing" (Mizo), and in parts of north-east India and Bangladesh the spadix is collected and cooked as a vegetable. The plant has been cultivated as a food plant in North-East India for generations, and a species eaten as a vegetable in one part of the world and collected for its chartreuse variegation in another is an unusual case, even in the Alocasia genus.
How to identify it
Aroidpedia describes a stem of about 1 to 3 ft (30 to 90 cm), inclined or prostrate and about an inch across. Leaves are ovate-lanceolate and sagittate, roughly 8 to 12 in by 4 to 5 in (20 to 30 cm by 10 to 13 cm), with 6 to 8 pairs of veins and basal lobes noticeably shorter than the front lobes. Petioles are around 8 to 12 in. The spathe is greenish yellow and 3 to 4 in long. Cultivated plants are normally smaller than these mature figures. In our experience the petioles are slightly pinkish, and the plant spreads by horizontally creeping stolons.
Underneath any variegation, then, look for a leaning stem and an arrow-shaped blade on a long petiole. That separates it from the broader, more heavily textured leaves of Alocasia longiloba and its relatives.
The lime aurea variegation
Because aurea sectors keep some chlorophyll, they are not the same thing as albo, where the white tissue has none. That generally means the coloured tissue still contributes to growth, though it does not make the plant carefree. The lime sectors retain meaningful chlorophyll alongside the dominant carotenoid pigments, so the variegated sectors have good photosynthetic capacity and the plant tends to grow vigorously compared with albo forms. In practical terms it is the most accessible of the fornicata variegated forms to grow: higher vigour, more stable variegation behaviour, and somewhat more tolerant of brief periods of suboptimal care than the albo or mint albo forms. Our guides to aurea variegation and albo variegation explain the difference, and the complete variegation guide sets out the wider types.
Light is the main lever on appearance. In bright indirect light the lime tone stays clear and separate from the green; under weak light the green tissue dominates and the lime sectors drift towards plain green. Variegation of this type can be chimeric, which means a corm-grown plant may not reproduce the pattern of its parent. The lime shade also varies with light and with the age of the leaf, so judge the colour of a plant over several leaves rather than one. On a medium green blade with pinkish petioles, the lime sectors create an almost electric quality, the acid yellow-green reading against the warm pink stems with a vibrancy that distinguishes this form from the other fornicata variegated plants. The pinkish blush of the petioles is a complementary warm tone that stops the overall effect reading as purely cool or citrus-like, and the composition of lime, pink and green rewards close observation, with the slightly waved leaf margins adding movement. Our Pink Dragon lime aurea guide shows the same colour type on a different species, and you can browse the aurea variegated Alocasia collection.
Alocasia fornicata lime aurea care
This is general Alocasia care that applies to this plant; there is no care guidance specific to a lime aurea form in Aroidpedia, so this is the routine we use across the genus.
- Light: bright indirect light, topped up with LED grow lights.
- Temperature: 20 to 27°C, with a heat mat if the room runs cool.
- Humidity: 60 to 80 per cent.
- Watering: when the top 2 to 3 cm of substrate has dried.
- Substrate: Fluval Stratum is our preferred choice.
- Feeding: our Alocasia feed from the plant feed range, at half strength.
More detail is in the ultimate Alocasia care guide. As with other aroids, the plant contains calcium oxalate crystals; keep it away from pets and children.
For this species a slightly wider band suits: 18 to 27°C and humidity of 60 to 70 per cent, in line with its native climate, and a half to two-thirds strength balanced feed every 2 to 3 weeks. The lime aurea form's higher vigour means it can sustain slightly more generous feeding than the albo form, but a measured approach is always best for variegated specimens.
Propagating from corms
Our Alocasia corm propagation guide covers the method in full. We use a self-wicking setup, with the corm in Fluval Stratum inside a Corm Keeper, so moisture is drawn up evenly from below. See also growing Alocasia corms in Fluval Stratum and our corms.
How it compares with similar plants
Within the species, the mint albo and albo forms show cooler, paler variegation. Beyond it, the Gageana x Fornicata aurea is a separate plant that sometimes gets grouped with it in conversation.
We release our plants through our drop model; see the rare plant drops page for how access works.
Frequently asked questions
What does lime aurea mean?
It describes aurea-type variegation with a yellow-green rather than golden tone. It is a trade description, not a formally documented cultivar.
Does Aroidpedia list a lime aurea form?
No. Its entry for Alocasia fornicata lists no variegated forms or cultivars.
How big does Alocasia fornicata get?
Aroidpedia gives a stem of 1 to 3 ft and leaves of 8 to 12 in. Cultivated plants are often smaller.
Why is my plant losing its lime colour?
Most often because of low light. Brighter indirect light with LED supplementation helps the colour stay clear.
Will a corm keep the lime variegation?
Not reliably. Chimeric variegation may not carry over to corm-grown plants.
Questions about Alocasia fornicata lime aurea? Contact our team for guidance from specialists who grow rare Alocasia in our UK-based private nursery. We are glad to help with light, substrate and corm questions for this plant.
