Nepenthes hamata

Taxonomy

Ezinụlọ:	Nepenthaceae
Genus:	Nepenthes
Nye iwu:	Caryophyllales

Nchịkọta

Nepenthes hamata is a highland pitcher plant endemic to Sulawesi, Indonesia, where it grows at 1,400 to 2,500 m. Its peristome, ringed with long, hooked teeth like a set of curved daggers, is possibly the most developed in the genus.

Nepenthes hamata is a strong climber with a stem up to about 7 m long. Its thin, stalkless leaves are relatively short, 5 to 15 cm long on climbing stems.

Lower pitchers are made only for a short time before the plant becomes a scrambling vine. They are up to 18 cm tall, bulbous below and narrower above, with a pair of wings bearing long, branched fringe filaments. Upper pitchers are usually more elongated, 7 to 25 cm (3 to 10 in) tall. The rigid, glossy peristome is made of expanded ribs that end in long, sickle-shaped teeth curving into the mouth; at the neck the teeth can be dagger-like and up to 10 mm long. The teeth are often even longer on upper pitchers, and in some populations curve right outwards. The lid may carry hair-like 'tentacles' up to 20 mm long on its upper surface. Most populations are largely hairless.

It is very closely related to N. tentaculata, which shares the lid tentacles and general form but lacks conspicuous peristome teeth. It belongs to the Hamata group (section Tentaculatae) with N. glabrata, N. muluensis, N. murudensis, N. tentaculata and N. nigra, and occasionally hybridises with N. glabrata and N. tentaculata in the wild.

Ozi gbasara ala

Mpaghara ala nna: Central Sulawesi, Indonesia (endemic), mainly the eastern part and East Peninsula

Mpaghara ihu igwe: Tropical highland (1,400-2,500 m)

Nepenthes hamata grows terrestrially or as an epiphyte in lower and upper montane mossy forest and in scrub on mountain ridges and summits, at 1,400 to 2,500 m. In these habitats it experiences high humidity and often partial shade. Cheek and Jebb describe it on open ridge-tops, rooted in moss and climbing into trees. It is known from at least two protected areas, Lore Lindu National Park and Morowali Nature Reserve, and probably occurs on unexplored peaks.

Njirimara anụ ahụ

Nha tozuru okè: Climbs to about 7 m; upper pitchers 7-25 cm (3-10 in) tall

Ọnụego uto: Moderate

Ụdị ọnyà: Pitfall Trap

The pitchers are pitfall traps with a well developed waxy zone inside. Nectar glands on the underside of the lid are sparse and tiny, only 0.1 to 0.2 mm across. The spur at the base of the lid may be simple or repeatedly branched.

Ntuziaka nlekọta

Chọrọ ọkụ

In the wild it often grows in partial shade. Bright, diffuse light is excellent, and artificial lighting can be adequate if it is bright enough.

Bright light year round; no seasonal rest kwa ụbọchị

Ihe achọrọ mmiri

Ụdị: Purified water (distilled, reverse osmosis or rain) is safest

Usoro: Water from above and let the excess drain. Do not keep the pot standing in a tray of water: plants sitting in trays often have dwarfed root systems.

Ugboro ugboro: Often enough to keep the mix evenly moist

iru mmiri: Very high: at least 60%, ideally near 90%

Ala

A 50:50 mix of long-fiber sphagnum moss and perlite is a good general starting point. After about a year, knock the plant out of its pot and look at the roots; if they are not exploring the mix, try a different one.

pH: Acidic (sphagnum based)

Okpomọkụ

Oge okpomọkụ: Days 77-86°F (25-30°C), nights about 18°F cooler

Oge oyi: Same as summer; tropical, grows all year

Nri

Ugboro ugboro: Optional; at most once or twice a month into the pitchers

Plants that catch insects need no feeding. Growers who want to fertilize can pour a small amount of orchid or epiphyte fertilizer into the pitchers once or twice a month, starting small and watching the effect. Fertilizing is optional.

Mgbasa

Ụzọ: Stem cuttings: cut green stems into segments with about two leaves each, trim each leaf to about a third of its size, set the lower half in the mix and keep the cutting at very high humidity. Roots usually form within about a month. Seed needs a male and a female plant flowering at the same time; it is short-lived and should be sown at once. Many cultivated plants were raised by tissue culture from wild-collected seed.

Ihe isi ike: Moderate

Ndụmọdụ mmalite

Treat it as a highland Nepenthes: high humidity, bright but diffuse light, and nights clearly cooler than days.

Nchọpụta nsogbu

Leaf edges burning and tendrils failing to form pitchers: humidity too low. A small plant with a weak root system: the pot has been standing in water.

Ndụmọdụ na-eto eto

Humidity makes the pitchers Troubleshooting

Burned leaf edges and pitcherless tendrils usually mean the air is too dry.

Patience for the teeth General

The longest, most dramatic teeth appear on the upper pitchers that form once the plant starts to climb.

Cool, humid highland conditions Advanced

It grows wild in mossy montane forest at 1,400-2,500 m. Give days of 77-86°F (25-30°C) and nights about 18°F (10°C) cooler.

Eziokwu Na-akpali mmasị

Hamata comes from Latin hamatus, hooked, after the peristome teeth.
Barry Rice calls it one of the most frightening plants in the genus.
Until about 1996 plants sold for roughly US$300-400 each, which encouraged wild collection.
Tissue culture by Malesiana Tropicals from 1995 brought prices down sharply.
The 'red hairy hamata' found in 2005 was described in 2020 as a separate species, N. diabolica.
The IUCN Red List assessed it as Least Concern in 2018 (Clarke, assessment T40111A143967359).

Agụgụala

Pierre Joseph Eyma collected the species on Mount Lumut in 1938. Shigeo Kurata recognised it among undetermined Sulawesi specimens at the Bogor herbarium in 1972, listed it as N. dentata in 1976, and published that name formally in 1984. In the same year John Turnbull and Anne Middleton described it as N. hamatus. Which name has priority depends on whether a preprint of their paper counted as publicly available, and has been debated; N. hamata became the more widely used name and is retained in all major monographs.

The species stayed very rare in cultivation until around 1996. From 1995 Ch'ien Lee ran a propagation programme at Malesiana Tropicals in Sarawak, raising wild-collected seed in tissue culture, and by 2001 the firm held over 500 plants, greatly reducing the incentive to collect from the wild.

Ebe obibi

Ajụjụ ndị a jụrụkarị

In the wild it often grows in partial shade. Bright, diffuse light is excellent, and artificial lighting can be adequate if it is bright enough. N'ihe banyere Bright light year round; no seasonal rest nke ọkụ n'ụbọchị.

Purified water (distilled, reverse osmosis or rain) is safest. Water from above and let the excess drain. Do not keep the pot standing in a tray of water: plants sitting in trays often have dwarfed root systems.

A 50:50 mix of long-fiber sphagnum moss and perlite is a good general starting point. After about a year, knock the plant out of its pot and look at the roots; if they are not exploring the mix, try a different one. N'ime ala pH: Acidic (sphagnum based).

Ọ gaghị achọ nkwụsị. Oge okpomọkụ: Same as summer; tropical, grows all year.

Plants that catch insects need no feeding. Growers who want to fertilize can pour a small amount of orchid or epiphyte fertilizer into the pitchers once or twice a month, starting small and watching the effect. Fertilizing is optional. Olee ka a na-eme: Optional; at most once or twice a month into the pitchers.

Central Sulawesi, Indonesia (endemic), mainly the eastern part and East Peninsula. Nepenthes hamata grows terrestrially or as an epiphyte in lower and upper montane mossy forest and in scrub on mountain ridges and summits, at 1,400 to 2,500 m. In these habitats it experiences high humidity and often partial shade.

IUCN Red List na-enyocha ya dị ka Least Concern.

Stem cuttings: cut green stems into segments with about two leaves each, trim each leaf to about a third of its size, set the lower half in the mix and keep the cutting at very high humidity. Roots usually form within about a month. Seed needs a male and a female plant flowering at the same time; it is short-lived and should be sown at once. Many cultivated plants were raised by tissue culture from wild-collected seed.

Leaf edges burning and tendrils failing to form pitchers: humidity too low. A small plant with a weak root system: the pot has been standing in water.

Carnivoras na-ere Nepenthes hamata na Mexico. Gụọ osisi ndị dị na ibe a.

Ụdị nke osisi anyị na-ere

Dị maka Ịzụta

Nepenthes hamata hybrids (to order)

$2,000MXN

≈ US$108.42

Lelee ngwaahịa

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Shield-leaved Pitcher Plant

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Nọgide na-emelite na Nepenthes hamata

Denye aha ka ị nweta ndụmọdụ nlekọta, ntuziaka na-eto eto, na mmelite kpọmkwem maka Nepenthes hamata na osisi ndị ọzọ na-eri anụ.

Debanye aha na akwụkwọ akụkọ