| Typhonium johnsonianum | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Alismatales |
| Family: | Araceae |
| Genus: | Typhonium |
| Species: | T. johnsonianum |
| Binomial name | |
| Typhonium johnsonianum | |
Typhonium johnsonianum is a species of plant in the arum family that is endemic to the Northern Territory of Australia.
The species is a deciduous geophytic, perennial herb, which resprouts annually from a hemispherical, cream-coloured corm. The oval, dull light green leaves are 3.5 cm long by 1.7 cm wide, on a 4 cm long stalk. The flower is enclosed in a green, brown and maroon spathe 5 cm long, appearing in December. [3]
It was named after Australian botanist L.A.S. Johnson after his 70th birthday. [4]
The species is only known from the tropical Top End of the Northern Territory. Only two localities are known, at Black Jungle Conservation Reserve and in Kakadu National Park. [4]
The type locality is an open grassy clearing between Acacia auriculiformis / Melaleuca forest and Lophostemon lactifluus forest, near the edge of a floodplain, in well-drained sandy soil with a high water table during the wet season. [3]
NT Flora lists the species as "data deficient". [5] IUCN (2013) lists it as "vulnerable". [1]
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is an inventory of the global conservation status and extinction risk of biological species. A series of Regional Red Lists, which assess the risk of extinction to species within a political management unit, are also produced by countries and organizations.
The conservation status of a group of organisms indicates whether the group still exists and how likely the group is to become extinct in the near future. Many factors are taken into account when assessing conservation status: not simply the number of individuals remaining, but the overall increase or decrease in the population over time, breeding success rates, and known threats. Various systems of conservation status are in use at international, multi-country, national and local levels, as well as for consumer use such as sustainable seafood advisory lists and certification. The two international systems are by the International Union for Conservation of Nature (IUCN) and The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES).
Typhonium is a genus in the family Araceae native to eastern and southern Asia, New Guinea, and Australia. It is most often found growing in wooded areas.
A not evaluated (NE) species is one which has been categorized under the IUCN Red List of threatened species as not yet having been assessed by the International Union for Conservation of Nature.
Shoal Bay is a shallow bay lying adjacent to, and north of, the city of Darwin in the Northern Territory of Australia. Encompassing Hope Inlet at its eastern end, it is characterised by extensive areas of intertidal mudflats and mangroves and is an important site for waders, or shorebirds. The bay is situated within the Shoal Bay Coastal Reserve, a protected area that was established in 2000.
The Black Jungle Conservation Reserve is a protected area in the Northern Territory of Australia near the territorial capital of Darwin. The rural area of Darwin and its development has a contrasting history to the more southern regions and their rural zones. The development of the rural area around Darwin occurred after 1950 as agricultural ventures were trialed. Prior to this the area was tropical savanna with pockets of monsoon rainforest and melaleuca swamps, unchanged for thousands of years, except by the traditional Aboriginal owners of the land who hunted and gathered and managed the landscape with fire. Black Jungle Conservation Reserve is a part of the Adelaide River Coastal Floodplain system which encompasses Black Jungle and Lambells Lagoon Conservation Reserves, Fogg Dam, Leaning Tree Lagoon Nature Park, Melacca Swamp and Djukbinj National Park. These Reserves encompass a range of wetland types and form part of the internationally significant Adelaide River floodplain.
Acacia equisetifolia is a small shrub in the genus Acacia. It is endemic the Northern Territory, and is critically endangered under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999, being known only from Graveside Gorge in the Kakadu National Park, where it grows on sandstone slopes and ledges at the tops of sheer cliffs. It flowers in February, with near-mature pods observed as being present in March, August and October.
Typhonium taylorii is a species of plant in the arum family that is endemic to Australia.
Typhonium jonesii is a species of plant in the arum family that is endemic to Australia.
Typhonium wilbertii is a species of plant in the arum family that is endemic to Australia.
Typhonium weipanum is a species of plant in the arum family that is endemic to Australia.
Typhonium russell-smithii is a species of plant in the arum family that is endemic to Australia.
Typhonium praetermissum is a species of plant in the arum family that is endemic to the Northern Territory of Australia. In 2022, Hay and others resurrected the genus, Lazarum, and renamed the species as Lazarum praetermissum.
Typhonium peltandroides is a species of plant in the arum family that is endemic to Australia.
Typhonium alismifolium is a species of plant in the arum family that is endemic to Australia.
Typhonium angustilobum is a species of plant in the arum family that is native to Australia and New Guinea.
Typhonium liliifolium is a species of plant in the arum family that is endemic to Australia.
Typhonium eliosurum is a species of plant in the arum family that is endemic to Australia.
Typhonium brownii, also known as the black arum lily, is a species of plant in the arum family that is endemic to Australia.
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