Alocasia

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Alocasia
Alocasia macrorrhiza - Val Rahmeh - DSC04449.JPG
Alocasia macrorrhizos
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Alismatales
Family: Araceae
Subfamily: Aroideae
Tribe: Colocasieae
Genus: Alocasia
(Schott) G.Don
Type species
Alocasia cucullata
Alocasia distribution.svg
Range of the genus Alocasia.
Synonyms [1]
  • EnsolenantheSchott
  • SchizocasiaSchott
  • XenophyaSchott
  • PanzhuyuiaZ.Y.Zhu

Alocasia is a genus of rhizomatous or tuberous, broad-leaved, perennial, flowering plants from the family Araceae. There are about 90 accepted species native to tropical and subtropical Asia and eastern Australia. [2] Around the world, many growers widely cultivate a range of hybrids and cultivars as ornamentals.

Contents

Description

The large, cordate or sagittate leaves grow to a length of 20 to 90 cm (8 to 35 in) on long petioles. Their araceous flowers grow at the end of a short stalk, but are not conspicuous; often hidden behind the leaf petioles.

The corms of some species can be processed to make them edible, however, the raw plants contain raphid or raphide crystals of calcium oxalate along with other irritants (possibly including proteases) [3] that can numb and swell the tongue and pharynx. This can cause difficulty breathing and sharp pain in the throat. Lower parts of the plant contain the highest concentrations of the poison.

Prolonged boiling before serving or processing may reduce risk of adverse reactions. Additionally, acidic fruit such as tamarind may dissolve the raphides altogether. It's important to note, however, that this genus varies in toxicity, and can still be dangerous to ingest, even after taking precautions.

Species

The following are the accepted species of Alocasia along with their common names (where available) and distribution ranges: [2]

FlowerLeafScientific nameDistribution
Alocasia acuminata SchottIndonesia
Alocasia aequiloba N.E.Br.New Guinea
Alocasia alba SchottSri Lanka
Alocasia arifolia Hallier f.Malaysia
Alocasia atropurpurea Engl.Philippines
Alocasia augustiana ies.jpg Alocasia augustiana L.Linden & RodigasNew Guinea
Alocasia azlanii K.M.Wong & P.C.BoyceBrunei
PXL 20220721 201128151.jpg Alocasia baginda Kurniawan & P.C.BoyceKalimantan
Alocasia balgooyi A.HaySulawesi
Alocasia beccarii Engl.Malaysia
Alocasia boa A.HayNew Guinea
Alocasia boyceana A.HayPhilippines
Alocasia brancifolia (Schott) A.HayNew Guinea
Alocasia brisbanensis (Bailey) Domin (AM AK302022-1).jpg Alocasia brisbanensis 155068473.jpg Alocasia brisbanensis (F.M.Bailey) Domin: Cunjevoi, spoon lilyAustralia
Alocasia calidora.jpg Alocasia cadieri ChantrierSE Asia
Alocasia celebica Engl. ex KoordSulawesi
Alocasia chaii P.C.BoyceSarawak
Alocasia clypeolata in the Philippines 01.jpg Alocasia clypeolata A.Hay: Green shieldPhilippines
Jian Wei Yu (Jia Hai Yu ) Alocasia cucullata -Shen Zhen Xian Hu Zhi Wu Yuan Fairy Lake Botanical Garden, China- (9227100031).jpg Alocasia cucullata (Philippines) 01.jpg Alocasia cucullata (Lour.) G.Don in R.Sweet: Chinese taroSoutheast Asia
Alocasia culionensis Engl.Philippines
Alocasia cuprea - Victoriahuset, Bergianska tradgarden - Stockholm, Sweden - DSC00282.JPG Alocasia cuprea K.KochBorneo
Alocasia decipiens SchottIndonesia
Alocasia decumbens BuchetVietnam
Alocasia devansayana (L.Linden & Rodigas) Engl.New Guinea
Alocasia evrardii Gagnep. ex V.D.NguyenCambodia to central Vietnam
Alocasia fallax SchottEast Himalaya to Bangladesh
Alocasia farisii Zulhazman, Norziel. & P.C.BoycePeninsular Malaysia
Alocasia flabellifera A.HayNew Guinea
Alocasia flemingiana Yuzammi & A.HayJava
Alocasia fornicata 04.jpg Alocasia fornicata (Roxb.) SchottIndia, Indonesia
Alocasia gageana Engl. & K.Krause in H.G.A.EnglerBurma
Alocasia grata Prain ex Engl. & Krause in H.G.A.EnglerIndonesia
Alocasia hainanica N.E.Br.Hainan to N. Vietnam
Alocasia hararganjensis H.Ara & M.A.HassanBangladesh
Alocasia heterophylla flowers (Philippines).jpg Alocasia heterophylla (Philippines) 0003.jpg Alocasia heterophylla (C.Presl) Merr.Philippines
Alocasia hollrungii Engl.New Guinea
Alocasia hypoleuca P.C.BoyceThailand
Alocasia indica (Lour.) SpachIndia, SE Asia, Java
Alocasia infernalis P.C.BoyceBorneo
Alocasia inornata Hallier f.Sumatra
Alocasia jiewhoei V.D.NguyenCambodia
Alocasia kerinciensis A.HaySumatra
Alocasia lancifolia Engl.New Guinea
Alocasia lauterbachiana (Engl.) A.HayNew Guinea
Alocasia lecomtei Engl.Vietnam
Alocasia lihengiae C.L.Long & Q.FangYunnan
Alocasia lowii1.jpg Alocasia longiloba Miq.Malaysia
Alocasia macrorrhizos blossom.jpg Parque ecologico Jardines en la Montana 21.JPG Alocasia macrorrhizos (L.) G.Don in R.Sweet: Giant taro, elephant ear, ape flowerSE Asia, Australia, Pacific
Alocasia maquilingensis Merr.Philippines
Alocasia megawatiae Yuzammi & A.HaySulawesi
Alocasia melo A.HayBorneo
Alocasia micholitziana inflorescence.jpg Alocasia micholitziana 2.JPG Alocasia micholitziana Sander: Green velvet alocasiaPhilippines
Alocasia minuscula A.HayBorneo
Alocasia monticola A.HayNew Guinea
Alocasia navicularis (K.Koch & C.D.Bouché) K.Koch & C.D.BouchéHimalaya
Alocasia nebula A.HayBorneo
Alocasia nicolsonii A.HayNew Guinea
Alocasia nycteris (Philippines) Batwing alocasia 0003.jpg Alocasia nycteris Medecilo, G.C.Yao & Madulid: Batwing alocasiaPhilippines
Alocasia odora2.jpg Alocasia odora 01.jpg Alocasia odora (Lindl.) K.Koch: Night-scented lilySE Asia, China
Alocasia × okinawensis TawadaOkinawa
Alocasia pangeran A.HayBorneo
Alocasia peltata M.HottaBorneo
Alocasia perakensis Hemsl.Malaysia
Alocasia portei (Philippines) young plant 01.jpg Alocasia portei SchottNew Guinea
Alocasia princeps W.BullMalaysia
Alocasia principiculus A.HayBorneo
Alocasia puber (Hassk.) SchottJava
Alocasia puteri A.HayBorneo
Alocasia pyrospatha A.HayNew Guinea
Alocasia ramosii A.HayPhilippines
Alocasia reginae N.E.Br.Borneo
Alocasia reginula (Philippines) 01.jpg Alocasia reginula A.Hay: Black velvetSabah
Alocasia reversa N.E.Br.Philippines
Alocasia ridleyi A.HayBorneo
Alocasia rivularis Luu, Nguyen-Phi & H.T.VanVietnam
Alocasia robusta M.HottaBorneo
Alocasia salarkhanii H.Ara & M.A.HassanBangladesh
Alocasia sanderiana0.jpg Alocasia sanderiana serres du Luxembourg.jpg Alocasia sanderiana W.BullPhilippines
Elephant-ear Plants (Alocasia sarawakensis) (8415446715).jpg Alocasia sarawakensis M.HottaBorneo
Alocasia scabriuscula N.E.Br.Borneo
Alocasia scalprum A.Hay: Samar lancePhilippines
Alocasia simonsiana A.HayNew Guinea
Alocasia sinuata (Philippines) 0004.jpg Alocasia sinuata N.E.Br.Philippines
Alocasia suhirmaniana Yuzammi & A.HaySulawesi
Alocasia venusta A.HayBorneo
Alocasia vietnamensis V.D.Nguyencentral Vietnam
Alocasia wentii kz1.jpg Alocasia wentii Engl. & K.Krause: New Guinea shieldNew Guinea
Alocasia wongii A.HayBorneo
Alocasia yunqiana Z.X.Ma, Yifan Li & J.T.YinYunnan
Plant Alocasia zebrina spadix P1110645 01.jpg Alocasia zebrina (Philippines) 0009.jpg Alocasia zebrina Veitch ex J.DixPhilippines


Nothospecies

The following list is incomplete.

The following are hybrid species in the genus Alocasia:

Cultivation

Alocasia are tropical plants that are increasingly becoming popular as houseplants. [6] The hybrid A. × amazonica has gained the Royal Horticultural Society's Award of Garden Merit. [7] They are typically grown as pot plants, but a better way is to grow the plants permanently in the controlled conditions of a greenhouse. They can tolerate dim light and cannot withstand direct sunlight. They should be cared for as any other tropical plant with weekly cleaning of the leaves, frequent fertilization and medium to high humidity. [8]

They rarely survive cold winters or the dryness of artificial heating, but an attempt to slowly acclimatize plants from the summer garden to the house can help. [9] Once inside, the watering period must be reduced and the plants should be protected from spider mites or red spider attack.

See also

Related Research Articles

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<i>Chlorophytum comosum</i> Species of flowering plant

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<i>Caladium</i> Genus of flowering plants

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<i>Copernicia</i> Genus of palms

Copernicia is a genus of palms native to South America and the Greater Antilles. Of the known species and nothospecies (hybrids), 22 of the 27 are endemic to Cuba. They are fan palms, with the leaves with a bare petiole terminating in a rounded fan of numerous leaflets. The species are small to medium-sized trees growing to 5–30 m tall, typically occurring close to streams and rivers in savanna habitats.

<i>Aechmea fasciata</i> Species of plant

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<i>Alocasia sanderiana</i> Species of plant

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<i>Caryota</i> Genus of palms

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<i>Alocasia odora</i> Species of flowering plant

Alocasia odora is a flowering plant native to East and Southeast Asia. In Manipur, local name is Hoomu. Alocasia odora can be used as medicine for the treatment of common cold in North Vietnam.

<i>Epipremnum</i> Genus of flowering plants

Epipremnum is a genus of flowering plants in the family Araceae, found in tropical forests from China, the Himalayas, and Southeast Asia to Australia the western Pacific. They are evergreen perennial vines climbing with the aid of aerial roots. They may be confused with other Monstereae such as Rhaphidophora, Scindapsus and Amydrium.

<i>Alocasia macrorrhizos</i> Species of flowering plant

Alocasia macrorrhizos is a species of flowering plant in the arum family (Araceae) that it is native to rainforests of Maritime Southeast Asia, New Guinea, and Queensland and has long been cultivated in South Asia, the Philippines, many Pacific islands, and elsewhere in the tropics. Common names include giant taro, ʻape, giant alocasia, biga, and pia. In Australia it is known as the cunjevoi.

<i>Alocasia fornicata</i> Species of flowering plant

Alocasia fornicata is a plant species of many-nerved, broad-leaved, rhizomatous or tuberous perennials from the family Araceae, native to Indochina and to the Indian Subcontinent. It characteristically grows 2' - 3 ' in height with slightly pink petiole, triangular wide shaped leaves and a horizontally growing stolon.

<i>Philodendron erubescens</i> Species of vine

Philodendron erubescens, the blushing philodendron or red-leaf philodendron, is a species of flowering plant in the family Araceae, native to Colombia. It is a robust evergreen climber growing to 3–6 m (10–20 ft), with red stems and heart-shaped leaves up to 40 cm (16 in) in length. The flowers are deep red, fragrant spathes up to 15 cm (6 in) long, in summer and autumn. The specific epithet erubescens means "blushing".

<i>Alocasia zebrina</i> Species of plant

Alocasia zebrina, commonly known as the zebra plant or zebrina alocasia, is a plant in the family Araceae. It is endemic to the islands of Luzon, Mindanao, Leyte, Samar, Biliran, and Alabat in the Philippines. It is commonly grown as an ornamental plant worldwide. It is also locally known as gabing tigre in Tagalog. It is nationally listed as a threatened species and collection of A. zebrina from the wild is illegal in the Philippines.

<i>Alocasia wentii</i> Species of plant in the family Araceae

Alocasia wentii, the hardy elephant's ear, is a species of flowering plant in the family Araceae, native to the highlands of New Guinea. Occasionally kept as a houseplant, the unimproved species and some variegated cultivars are commercially available.

Alocasia gageana, the dwarf upright elephant ear or dwarf taro, is a species of flowering plant in the family Araceae, native to the Kachin Hills of Myanmar. Reaching 4 ft (1 m), it is only a dwarf when compared to the giant upright elephant ear Alocasia odora or to taro. It makes for a large houseplant, or an outdoor ornamental plant in tropical or (nearly) frost-free subtropical areas.

<i>Alocasia reginula</i> Species of plant in the family Araceae

Alocasia reginula, also known as 'Black Velvet', is a species of flowering cormous aroid, native to Sabah state in Malaysia. This plant, often referred to as one of the “jewel” Alocasias, has become increasingly popular among plant hobbyists between the years 2018-2020. Until as recently as 2021 though, not much was universally known about the plant or its origins. Originally described from cultivation, and often sold as “Alocasia 'Black Velvet'”, it is not a modern cultivar or hybrid; A. reginula is its own natural species. It is only known from dry, deeply shaded limestone cliffs in Tabin Wildlife Reserve. As a houseplant it needs sharp drainage or it will be very likely to rot.

<i>Alocasia sarawakensis</i> Species of plant in the family Araceae

Alocasia brancifolia is a species of flowering plant in the family Araceae, native to the Moluccas and New Guinea. With its heavily dissected leaves it is sometimes kept as a houseplant. There appears to be a cultivar, 'Pink Passion', in which the markings on the petioles are pink instead of the usual brown.

<i>Alocasia longiloba</i> Species of plant in the family Araceae

Alocasia longiloba is a species of flowering plant in the family Araceae. It is the namesake of a species complex. The complex has a widespread distribution; Guangdong, Hainan, and southern Yunnan in China, mainland Southeast Asia, and western and central Malesia.

References

  1. Kew World Checklist of Selected Plant Families
  2. 1 2 "Alocasia (Schott) G.Don". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 19 June 2022.
  3. Bradbury, J. Howard; Nixon, Roger W. (1998). "The acridity of raphides from the edible aroids". Journal of the Science of Food and Agriculture. 76 (4): 608–616. doi:10.1002/(SICI)1097-0010(199804)76:4<608::AID-JSFA996>3.0.CO;2-2.
  4. Alocasia ×mortfontanensis, World Checklist of Selected Plant Families
  5. Alocasia ×amazonica hort., nom. inval. , U.S. National Plant Germplasm System
  6. Exotic Rainforest rare tropical plants
  7. "RHS Plant Selector - Alocasia × amazonica" . Retrieved 14 March 2020.
  8. Chiusoli, Alessandro; Boriani, Luisa Maria (1986). "Alocasia metallica". Simon & Schuster's guide to houseplants. New York: Simon and Schuster. ISBN   0671631314.
  9. Nature Assassin: Overwintering your Alocasia