''Anthorrhiza'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of myrmecophytic

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

s in the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Rubiaceae The Rubiaceae are a family of flowering plants, commonly known as the coffee, madder, or bedstraw family. It consists of terrestrial trees, shrubs, lianas, or herbs that are recognizable by simple, opposite leaves with interpetiolar stipules ...

. It is endemic to

Papua New Guinea Papua New Guinea (abbreviated PNG; , ; tpi, Papua Niugini; ho, Papua Niu Gini), officially the Independent State of Papua New Guinea ( tpi, Independen Stet bilong Papua Niugini; ho, Independen Stet bilong Papua Niu Gini), is a country i ...

, including the

Louisiade Archipelago The Louisiade Archipelago is a string of ten larger volcanic islands frequently fringed by coral reefs, and 90 smaller coral islands in Papua New Guinea. It is located 200 km southeast of New Guinea, stretching over more than and spread ...

. It is one of five

ant-plant Myrmecophytes (; literally "ant-plant") are plants that live in a mutualistic association with a colony of ants. There are over 100 different genera of myrmecophytes. These plants possess structural adaptations that provide ants with food and/ ...

genera in the family Rubiaceae, the others being ''

Hydnophytum ''Hydnophytum'' is a genus of epiphytic myrmecophytes (ant plants) native to Southeast Asia, the Pacific region and also extending into Queensland in northern Australia. The name is derived from the Ancient Greek ''hydnon'' "tuber", and ''phyton' ...

'', ''

Myrmecodia ''Myrmecodia'' is a genus of epiphytic myrmecophytes (mər′mek•ə‚fīt; literally "ant-plant"), native to Southeast Asia, but also present in Indochina, Malaysia, the Southwest Pacific, the Philippines, Fiji, and extending south to Queensl ...

'', ''

Myrmephytum ''Myrmephytum'' is a genus of myrmecophyte, myrmecophytic flowering plants in the Family (biology), family Rubiaceae. It is distributed from central Malesia to New Guinea. It is one of five ant-plant genera in the family Rubiaceae, the others b ...

'', and ''

Squamellaria ''Squamellaria'' is a genus of myrmecophyte, myrmecophytic flowering plants in the Family (biology), family Rubiaceae. It is endemism, endemic to the islands of Fiji. It is one of five ant-plant genera in the family Rubiaceae, the others being ...

''.

Species

* ''

Anthorrhiza areolata ''Anthorrhiza'' is a genus of myrmecophyte, myrmecophytic flowering plants in the Family (biology), family Rubiaceae. It is endemic to Papua New Guinea, including the Louisiade Archipelago. It is one of five ant-plant genera in the family Rubiace ...

'' C.R.Huxley & Jebb * '' Anthorrhiza bracteosa'' C.R.Huxley & Jebb * '' Anthorrhiza caerulea'' C.R.Huxley & Jebb * '' Anthorrhiza camilla'' Jebb * '' Anthorrhiza chrysacantha'' C.R.Huxley & Jebb * '' Anthorrhiza echinella'' C.R.Huxley & Jebb * ''

Anthorrhiza mitis ''Anthorrhiza'' is a genus of myrmecophytic flowering plants in the family Rubiaceae. It is endemic to Papua New Guinea, including the Louisiade Archipelago. It is one of five ant-plant genera in the family Rubiaceae, the others being ''Hydnophy ...

'' C.R.Huxley & Jebb * ''

Anthorrhiza recurvispina ''Anthorrhiza'' is a genus of myrmecophytic flowering plants in the family Rubiaceae. It is endemic to Papua New Guinea, including the Louisiade Archipelago. It is one of five ant-plant genera in the family Rubiaceae, the others being ''Hydnophy ...

'' C.R.Huxley & Jebb * ''

Anthorrhiza stevensii ''Anthorrhiza'' is a genus of myrmecophytic flowering plants in the family Rubiaceae. It is endemic to Papua New Guinea, including the Louisiade Archipelago. It is one of five ant-plant genera in the family Rubiaceae, the others being ''Hydnophy ...

'' C.R.Huxley & Jebb

References

Rubiaceae genera Psychotrieae Myrmecophytes Endemic flora of New Guinea {{Rubioideae-stub