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Aglaonema commutatum , leaves and fruits |
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The cob filaments ( Aglaonema ) are a tropical plant genus from the family of the arum plants (Araceae). The botanical genus name refers to the shiny stamens and is derived from the Greek words agláos for wonderful and néma for thread. Varieties of this genus are very popular as house plants because they also thrive in shady locations and their leaves are beautifully drawn.
Dissemination and use
Aglaonema species are common in the tropical forests of Southeast Asia (Philippines, Malaysia, Indonesia, South China to Thailand).
It is used as an ornamental plant for parks and gardens in tropical countries. In frost-prone areas it only thrives as a houseplant in heated rooms. They are also very suitable for hydroponics .
description
Habit and leaves
Aglaonema species are evergreen , perennial herbaceous plants . Most species grow with upright, a few species also with shallow creeping shoot axes . The plants reach heights of growth between 40 cm and 120 cm.
The spirally arranged, simple, oval to lanceolate leaves usually have long petioles. The characteristic pattern of the up to 30 cm long leaves makes Aglaonema species and varieties a popular decorative plant. Depending on the type and variety, there are different spots and marbling in white-silvery to light green on a strong green background.
Inflorescence and fruit
They are single sexed (monoecious). The relatively inconspicuous inflorescences consist of an inflorescence stem, piston and spathe. The inflorescence stem is shorter than the leaf stalks. The pale white piston (spadix) appears in a creamy white to green bract ( spathe ), the typical shape of the inflorescences in the arum family. On the piston there is a female, sterile and male section, each with unisexual flowers. Red or orange, single-seeded berries are formed.
Toxicity
All parts of the plant are poisonous. The sap can cause skin irritation.
Systematics
There are around 23 species of Aglaonema and numerous varieties and forms:
| Scientific name | distribution | Remarks |
|---|---|---|
| Aglaonema brevispathum ( Engl. ) Engl. | Vietnam , Laos , Cambodia , Thailand , Myanmar | 2 forms |
| Aglaonema chermsiriwattanae D.Sookchaloem | southern Thailand | |
| Aglaonema cochinchinense Engl. | southern Thailand, Cambodia, southern Vietnam, Malaysia | |
| Aglaonema commutatum Schott | Philippines , NE- Sulawesi | 4 varieties |
| Aglaonema cordifolium Engl. | Philippines (southern Mindanao ) | |
| Aglaonema costatum N.E.Br. | Vietnam, Laos, Cambodia, Thailand, West Malaysia ( Langkawi ) | 4 forms |
| Aglaonema densinervium Engl. | Philippines, NE Sulawesi | |
| Aglaonema flemingianum A. Hay | West Malaysia | |
| Aglaonema hookerianum Schott | NE India ( Darjiling , Assam ), Bangladesh , West Myanmar | |
| Aglaonema marantifolium flower | Moluccas , New Guinea | |
| Aglaonema modestum Schott ex Engl. | SE Bangladesh, South China ( Yunnan to Guangdong ), North Thailand, North Laos, Vietnam | |
| Aglaonema nebulosum N.E.Br. | southern Malay Peninsula , Borneo , islands on the NE coast of Sumatra | 2 forms |
| Aglaonema nitidum ( Jack ) Kunth | South Myanmar, South Thailand, Vietnam, Malaya , Sumatra, Java , Borneo | 2 varieties |
| Aglaonema ovatum Engl. | Vietnam, Laos, Thailand | 2 forms |
| Aglaonema philippinense Engl. | Philippines, Sulawesi | 2 varieties |
| Aglaonema pictum ( Roxb. ) Kunth | Sumatra, Nias | |
| Aglaonema pumilum Hook.f. | Southern Myanmar, Southern Thailand | |
| Aglaonema robeleynii (Van Geert) Pitcher & Manda | Philippines (Luzon) | |
| Aglaonema rotundum N.E.Br. | North Sumatra ( Medan ) | |
| Aglaonema simplex (flower) flower | South Myanmar, Yunnan and Nicobar Islands to the Philippines and western Moluccas | |
| Aglaonema tenuipes Engl. | South China (Yunnan), Vietnam, Laos, Cambodia, Thailand | maybe to Aglaonema simplex |
| Aglaonema tricolor R.N. Jervis | Philippines | |
| Aglaonema vittatum Ridl. ex Engl. | East Sumatra, Lingga Islands |
photos
fruit
Flower cobs with a white spathe
swell
- To the genus Aglaonema .
- Li Heng & Boyce PC 2010: Aglaonema. In: Flora of China. Vol. 23. Science Press, Beijing, Missouri Botanical Garden Press, St. Louis. Pp. 22-23. - Online (English.)
Individual evidence
- ↑ a b c d e Rafaël Govaerts (ed.): Aglaonema. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved June 11, 2018.
- ↑ Li Heng & PCBoyce 2010: Aglaonema. In: Flora of China. Vol. 23. Science Press, Beijing, Missouri Botanical Garden Press, St. Louis. Pp. 22-23. - Aglaonema simplex - Online. (engl.)
literature
- Halina Heitz: The large GU houseplants book , Verlag Gräfe u. Unzer Munich, 2003
- More joy in indoor plants (...), Verlag Das Beste Stuttgart, 1981
- The Royal Horticultural Society - AZ Encyclopedia of Garden Plants, 1996, Ed. Christopher Brickell
