Strelitziaceae | |
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Ravenala madagascariensis | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Clade: | Commelinids |
Order: | Zingiberales |
Family: | Strelitziaceae Hutch. [1] |
Type genus | |
Strelitzia | |
Genera | |
Strelitziaceae distribution map |
The Strelitziaceae comprise a family of monocotyledonous flowering plants, very similar in appearance and growth habit to members of the related families Heliconiaceae and Musaceae (banana family). The three genera with seven species [2] of Strelitziaceae have been included in Musaceae in some classifications, but are generally recognized as a separate family in more recent treatments such as the APG II system (2003). The APG II system assigns the Strelitziaceae to the order Zingiberales in the commelinid clade.
The Strelitziaceae include three genera, all occurring in tropical to subtropical regions: Strelitzia with five species in southern Africa, Ravenala with a single species in Madagascar, and Phenakospermum with a single species in northern South America. The best-known species is the bird-of-paradise flower Strelitzia reginae , grown for its flowers worldwide in tropical and subtropical gardens, and a well-known flower in floristry. The other species of Strelitzia have less colourful flowers and are grown instead for their striking foliage. Also grown for its foliage is the traveller's tree, Ravenala madagascariensis .
Strelitziaceae | |
Image | Genus | Living species |
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Strelitzia Ait. |
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Phenakospermum Endl. |
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Ravenala Adans. |
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Cladogram: Phylogeny of Zingiberales [3] | ||||||||||||||||||||||||||||||||||||
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The Zingiberales are flowering plants forming one of four orders in the commelinids clade of monocots, together with its sister order, Commelinales. The order includes 68 genera and 2,600 species. Zingiberales are a unique though morphologically diverse order that has been widely recognised as such over a long period of time. They are usually large herbaceous plants with rhizomatous root systems and lacking an aerial stem except when flowering. Flowers are usually large and showy, and the stamens are often modified (staminodes) to also form colourful petal-like structures that attract pollinators.
Zingiberaceae or the ginger family is a family of flowering plants made up of about 50 genera with a total of about 1600 known species of aromatic perennial herbs with creeping horizontal or tuberous rhizomes distributed throughout tropical Africa, Asia, and the Americas. Many of the family's species are important ornamental, spice, or medicinal plants. Ornamental genera include the shell gingers (Alpinia), Siam or summer tulip, Globba, ginger lily (Hedychium), Kaempferia, torch-ginger Etlingera elatior, Renealmia, and ginger (Zingiber). Spices include ginger (Zingiber), galangal or Thai ginger, melegueta pepper, myoga, korarima, turmeric (Curcuma), and cardamom.
Musaceae is a family of flowering plants composed of three genera with about 91 known species, placed in the order Zingiberales. The family is native to the tropics of Africa and Asia. The plants have a large herbaceous growth habit with leaves with overlapping basal sheaths that form a pseudostem making some members appear to be woody trees. In most treatments, the family has three genera, Musa, Musella and Ensete. Cultivated bananas are commercially important members of the family, and many others are grown as ornamental plants.
Heliconia is a genus of flowering plants in the monotypic family Heliconiaceae. Most of the 194 known species are native to the tropical Americas, but a few are indigenous to certain islands of the western Pacific and Maluku in Indonesia. Many species of Heliconia are found in the tropical forests of these regions. Most species are listed as either vulnerable or data deficient by the IUCN Red List of threatened species. Several species are widely cultivated as ornamentals, and a few are naturalized in Florida, Gambia, and Thailand.
Petrosaviaceae is a family of flowering plants belonging to a monotypic order, Petrosaviales. Petrosaviales are monocots, and are grouped within the lilioid monocots. Petrosaviales is a very small order composed of one family, two genera and four species accepted in 2016. Some species are photosynthetic (Japonolirion) and others are rare, leafless, chlorophyllous, mycoheterotrophic plants (Petrosavia). The family is found in low-light montane rainforests in Japan, China, Southeast Asia and Borneo. They are characterised by having bracteate racemes, pedicellate flowers, six persistent tepals, septal nectaries, three almost-distinct carpels, simultaneous microsporogenesis, monosulcate pollen, and follicular fruit.
Orchidantha is a genus of flowering plants. In the APG III system, it is placed in the family Lowiaceae, as the sole genus. It includes the plants in the formerly recognised genera Lowia and Protamomum.
The Marantaceae are a family, the arrowroot family, or the prayer plant family, of flowering plants consisting of 31 genera and around 530 species, defining it as one of the most species-rich families in its order. Species of this family are found in lowland tropical forests of Africa, Asia, and the Americas. The majority (80%) of the species are found in the American tropics, followed by Asian (11%) and African (9%) tropics. They are commonly called the prayer-plant family and are also known for their unique secondary pollination presentation.
The Xyridaceae are a family of flowering plants. This family has been recognized by many taxonomists and is known as the yellow-eyed grass family.
Plumbaginaceae is a family of flowering plants, with a cosmopolitan distribution. The family is sometimes referred to as the leadwort family or the plumbago family.
Haemodoraceae is a family of perennial herbaceous angiosperms containing 15 genera and 102 known species, sometimes known as the "bloodroots", found throughout the Southern Hemisphere, from Australia and New Guinea to South Africa, as well as the Americas.
Elaeocarpaceae is a family of flowering plants. The family contains approximately 615 species of trees and shrubs in 12 genera. The largest genera are Elaeocarpus, with about 350 species, and Sloanea, with about 120.
Costaceae, known as the Costus family or spiral gingers, is a family of pantropical monocots. It belongs to the order Zingiberales, which contains horticulturally and economically important plants such as the banana (Musaceae), bird-of-paradise (Strelitziaceae), and edible ginger (Zingiberaceae). The seven genera in Costaceae together contain about 143 known species. They are native to tropical climates of Asia, Africa, Central America, and South America. Several species are frequently found in cultivation.
The Calycanthaceae are a small family of flowering plants in the order Laurales. The family contains three genera and only 10 known species, restricted to warm temperate and tropical regions:
Hypoxidaceae is a family of flowering plants, placed in the order Asparagales of the monocots.
Dichapetalaceae is a family of flowering plants, consisting of 3 genera and about 170 species. Members of this family are trees, shrubs or lianas found in tropical and subtropical regions of the world.
Elatinaceae is a family of flowering plants with ca 35 species in two genera: Elatine and Bergia. The Elatine are mostly aquatic herbs, and the Bergia are subshrubs to shrubs. Elatine species are widely distributed throughout the world from temperate to tropical zones, with its greatest diversity found in temperate zones. Bergia is found in temperate to tropical Eurasia and Africa, with two tropical and one tropical to temperate species in the Americas. The center for biodiversity of Bergia is the Old World tropics, and this is also the center for biodiversity for the family. Neither genus is found in arctic ecosystems.
The Achatocarpaceae are a family of woody flowering plants consisting of two genera and 11 known species, and has been recognized by most taxonomists. The family is found from the southwestern United States south to tropical and subtropical South America.
The Datiscaceae are a family of dicotyledonous plants, containing two species of the genus Datisca. Two other genera, Octomeles and Tetrameles, are now classified in the family Tetramelaceae.
Huaceae is a family of plant in the rosids group, which has been classed in the orders Malpighiales, Malvales, and Violales or in its own order Huales. The APG II system placed it in the clade eurosids I, whereas the APG III system of 2009 and APG IV (2016) place it within the Oxalidales. The family is endemic to central Africa. It contains four species in the following two genera:
The "banana-families" or banana group is a basal paraphyletic assemblage in the order Zingiberales (Monocotyledoneae) that comprises Musaceae, Lowiaceae, Strelitziaceae, and Heliconiaceae. These taxa differentiate from the "ginger-families" derived clade by their plesiomorphic state of five or six fertile stamens, and generally have large banana-like leaves that are easily torn between secondary veins.