Mount Pangulubao
Encyclopedia
Mount Pangulubao or Pangulubau is a mountain near Lake Toba
in Sumatra
.
Mount Pangulubao is notable for the relatively large number of tropical pitcher plant
species that inhabit its forests. These include Nepenthes ampullaria
, Nepenthes gymnamphora
, Nepenthes mikei
, Nepenthes ovata
, Nepenthes rhombicaulis
, Nepenthes spectabilis
, and Nepenthes tobaica
. The natural hybrid Nepenthes × pangulubauensis
is named after it.
Lake Toba
Lake Toba is a lake and supervolcano. The lake is 100 kilometres long and 30 kilometres wide, and 505 metres at its deepest point. Located in the middle of the northern part of the Indonesian island of Sumatra with a surface elevation of about , the lake stretches from to...
in Sumatra
Sumatra
Sumatra is an island in western Indonesia, westernmost of the Sunda Islands. It is the largest island entirely in Indonesia , and the sixth largest island in the world at 473,481 km2 with a population of 50,365,538...
.
Mount Pangulubao is notable for the relatively large number of tropical pitcher plant
Pitcher plant
Pitcher plants are carnivorous plants whose prey-trapping mechanism features a deep cavity filled with liquid known as a pitfall trap. It has been widely assumed that the various sorts of pitfall trap evolved from rolled leaves, with selection pressure favouring more deeply cupped leaves over...
species that inhabit its forests. These include Nepenthes ampullaria
Nepenthes ampullaria
Nepenthes ampullaria , the Flask-Shaped Pitcher-Plant, is a very distinctive and widespread species of Nepenthes, present in Borneo, Sumatra, Thailand, Peninsular Malaysia, Singapore, the Maluku Islands, and New Guinea...
, Nepenthes gymnamphora
Nepenthes gymnamphora
Nepenthes gymnamphora is a tropical pitcher plant native to the Indonesian islands of Java and Sumatra. There is much debate surrounding the taxonomic status of this species and the taxa N. pectinata and N. xiphioides....
, Nepenthes mikei
Nepenthes mikei
Nepenthes mikei is a tropical pitcher plant endemic to Sumatra. It is characterised by its black mottled lower and upper pitchers. The species is closely related to N. angasanensis and N. tobaica....
, Nepenthes ovata
Nepenthes ovata
Nepenthes ovata is a tropical pitcher plant endemic to Sumatra. The specific epithet ovata is Latin for "ovate" and refers to the shape of the lower pitchers.-Botanical history:...
, Nepenthes rhombicaulis
Nepenthes rhombicaulis
Nepenthes rhombicaulis is a tropical pitcher plant endemic to Sumatra. The specific epithet rhombicaulis is formed from the Latin words rhombicus, meaning "rhomboid", and caulis, "stem"...
, Nepenthes spectabilis
Nepenthes spectabilis
Nepenthes spectabilis is a tropical pitcher plant endemic to Sumatra, where it grows at elevations of between 1400 and 2200 m above sea level. The specific epithet spectabilis is Latin for "visible" or "notable".-Botanical history:...
, and Nepenthes tobaica
Nepenthes tobaica
Nepenthes tobaica is a tropical pitcher plant endemic to Sumatra. It is particularly abundant around Lake Toba, after which it is named....
. The natural hybrid Nepenthes × pangulubauensis
Nepenthes × pangulubauensis
Nepenthes × pangulubauensis is a natural hybrid between N. mikei and N. gymnamphora . It is endemic to the Indonesian island of Sumatra.-References:*...
is named after it.