Merrill's Pitcher Plant

Taksonomia

Perhe:	Nepenthaceae
Suku:	Nepenthes
Tilata:	Caryophyllales

Yleiskatsaus

Nepenthes merrilliana is a lowland tropical pitcher plant endemic to the Philippines, found in northern and central Mindanao and on nearby Dinagat. It produces some of the largest pitchers in the genus, rivalling those of N. rajah.

Nepenthes merrilliana is one of the giant-pitchered species of the genus. The Field Museum's account of Philippine pitcher plants gives its pitchers as up to 34 cm deep and 17 cm wide, holding as much as one and a half liters of liquid.

N. surigaoensis is closely related and was for a long time treated as a synonym of N. merrilliana; N. samar is another close ally, which Barry Rice notes is possibly the same species.

In the wild it hybridizes with N. alata (the hybrid named N. × merrilliata), N. bellii, N. mindanaoensis and N. mirabilis. Like all Nepenthes, individual plants are either male or female.

Maantieteelliset tiedot

Alkuperäinen alue: Philippines (endemic): northern and central Mindanao, Dinagat and nearby islands

Ilmastovyöhykkeet: Tropical lowland to lower montane; cultivated under glass outside the tropics

Wikipedia describes its habitat as coastal forest on steep slopes from sea level to about 1,100 m (3,600 ft), and its presence in southern Mindanao as uncertain. Co's Digital Flora of the Philippines records it from Bucas Grande, Dinagat and the Mindanao provinces of Agusan del Norte, Bukidnon, Misamis Oriental and Surigao, in forests and sometimes as an epiphyte, at 20-1,700 m. The Field Museum notes plants in Surigao flourishing on exposed, sunny edges of shrubland in very poor, reddish, iron-rich soil.

Fyysiset ominaisuudet

Aikuinen koko: Pitchers up to about 34 cm (13 in) deep and 17 cm (7 in) wide

Kasvuvauhti: Moderate

Ansan tyyppi: Pitfall Trap

Like other Nepenthes, each pitcher is a modified leaf tip that holds digestive fluid. Prey is attracted by color, nectar and scent. The ridged rim around the mouth, the peristome, is slippery, and when it is wet a thin film of water makes insects 'aquaplane' into the pitcher. A waxy coating on the upper inner wall makes escape nearly impossible, and glands in the lower part absorb nutrients from the digested prey. The lid above the mouth helps keep rain out, and its underside may carry nectar glands.

Hoito-opas

Valovaatimukset

Bright, diffuse light. In the wild it often grows on exposed, sunny shrubland edges, so give it a very bright position.

Bright light year round; no seasonal rest päivittäin

Veden vaatimukset

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

Menetelmä: Water from above to keep the mix evenly moist and let it drain. Do not leave the pot standing in a tray of water.

Taajuus: Often enough that the mix stays moist

Kosteus: High: at least 60%, ideally near 90%

Maaperä

A 50:50 mix of long-fiber sphagnum moss and perlite is a good starting point. Check the roots after a year and adjust the mix if they are not spreading through it.

pH: Acidic (sphagnum based)

Lämpötila

Kesä: Days 86-93°F (30-34°C), nights 14°F (8°C) cooler

Talvi: Same as summer; keep warm all year

Ruokinta

Taajuus: Optional; any fertilizer at most once or twice a month into pitchers

Some growers add a little orchid or epiphyte fertilizer to the pitchers once or twice a month, starting with small amounts. Chemical fertilizers are best used at low strength.

Eteneminen

Menetelmät: Cuttings rooted in damp sphagnum moss in a bag or tank with high humidity and moderate light; they begin to root in one to two months and start to form pitchers in about six months. Seed loses viability soon after harvest. Tissue culture is used commercially.

Vaikeusaste: Moderate

Aloittelijan vinkkejä

Treat it as a warm-growing lowlander: heat, humidity and bright light all year, with water from above.

Vianmääritys

Leaf edges burning and no new pitchers: raise the humidity. Slow growth in a warm house: check that nights are not too cold for a lowland species.

Kasvatusvinkkejä

Humidity first Troubleshooting

If tendrils stop producing pitchers, raise the humidity before changing anything else; Nepenthes do best at 60-90% relative humidity.

Plenty of light Advanced

In Surigao it grows on sunny, exposed edges of shrubland. Bright light helps it color up and produce large pitchers.

Keep it warm General

This is a lowland species. Aim for days around 30-34°C (86-93°F) with nights only about 8°C (14°F) cooler, all year round.

Mielenkiintoisia faktoja

It is named after the American botanist Elmer Drew Merrill.
Its pitchers can hold as much as one and a half liters of liquid.
The Manobo people of the Surigao region call it lapsay.
N. samar and N. surigaoensis are close relatives; N. surigaoensis was long treated as the same species.
The IUCN Red List classes it as Vulnerable (Clarke et al., 2000, assessment T39676A10255369); the Philippine national list (DAO) classes it as Critically Endangered.

Historia

John Muirhead Macfarlane described Nepenthes merrilliana in 1911, in the Contributions from the Botanical Laboratory of the University of Pennsylvania, naming it after Elmer Drew Merrill. B. H. Danser's 1928 monograph also cited it from Sulawesi, but Jebb and Cheek (1997) disagreed, and it is now regarded as a Philippine endemic. Several authors, including Danser and Jebb and Cheek, applied the name to plants that included the closely related N. surigaoensis, which was long treated as a synonym and is now listed as a separate species.

Lähteet

Usein kysytyt kysymykset

Bright, diffuse light. In the wild it often grows on exposed, sunny shrubland edges, so give it a very bright position. Tavoittele noin Bright light year round; no seasonal rest valoa päivässä.

Purified water (distilled, reverse osmosis or rain) is safest. Water from above to keep the mix evenly moist and let it drain. Do not leave the pot standing in a tray of water.

A 50:50 mix of long-fiber sphagnum moss and perlite is a good starting point. Check the roots after a year and adjust the mix if they are not spreading through it. Maaperän pH: Acidic (sphagnum based).

Se ei tarvitse lepojaksoa. Talvilämpötilat: Same as summer; keep warm all year.

Some growers add a little orchid or epiphyte fertilizer to the pitchers once or twice a month, starting with small amounts. Chemical fertilizers are best used at low strength. Kuinka usein: Optional; any fertilizer at most once or twice a month into pitchers.

Philippines (endemic): northern and central Mindanao, Dinagat and nearby islands. Wikipedia describes its habitat as coastal forest on steep slopes from sea level to about 1,100 m (3,600 ft), and its presence in southern Mindanao as uncertain.

IUCN:n punainen lista arvioi sen tilaksi Vulnerable.

Cuttings rooted in damp sphagnum moss in a bag or tank with high humidity and moderate light; they begin to root in one to two months and start to form pitchers in about six months. Seed loses viability soon after harvest. Tissue culture is used commercially.

Leaf edges burning and no new pitchers: raise the humidity. Slow growth in a warm house: check that nights are not too cold for a lowland species.

Carnivoras myy Merrill's Pitcher Plant-kasveja Meksikossa. Katso tällä sivulla myytävät kasvit.

Saatavilla ostettavaksi

Nepenthes merrilliana

$750MXN

≈ US$40.66

Näytä tuote

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Pysy ajan tasalla Merrill's Pitcher Plant

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