Haemodoraceae | |
---|---|
Kangaroo paw ( Anigozanthos flavidus ) | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Clade: | Commelinids |
Order: | Commelinales |
Family: | Haemodoraceae R.Br. (1810) nom. cons. [1] [2] |
Genera [3] | |
15; see text | |
Synonyms | |
Haemodoreae [4] |
Haemodoraceae is a family of perennial herbaceous angiosperms (flowering plants) containing 15 genera [3] and 102 known species, [5] sometimes known as the "bloodroots", found throughout the Southern Hemisphere, from Australia and New Guinea to South Africa, as well as the Americas (from extreme southeastern USA through tropical South America).
Perhaps the best-known (and most popular in cultivation) genera from the family are the unusual Anigozanthos and Macropidia , both commonly called "kangaroo-paw" or "kangaroo's paw" due to their fuzzy flowers. These genera are hugely popular in both private gardens and public landscaping projects in Mediterranean climate regions, such as in Chile, northwestern Mexico (Baja California), Southern California (and the Bay Area) and Western Australia, among other locations; the kangaroo-paws are valued for their hardiness, adaptability and low irrigation requirements, once established.
The Haemodoraceae were first described by Robert Brown in 1810, [1] and bear his name as the botanical authority. An alternative name has been Haemodoreae [4]
The fourth Angiosperm Phylogeny Group classification of 2016 (unchanged from the earlier APG systems of 2009, 2003 and 1998), also recognizes this family and places it in the order Commelinales, in the clade commelinids, in the monocots. [6] [2] The family of the Haemodoraceae then includes about sixteen sub-tropical or tropical genera found in the southern hemisphere, two in North America and three known cultivated genera in Europe. [7]
Haemodoraceae is characterized by distichous leathery leaves, which are alternate, succulent, rather large and often ensiform, with entire margins and parallel veins. [8] The leaves are enclosed by a sheath with free margins and alternate, distichous (= in two vertical ranks).
The plants are hermaphroditic. Pollinators are primarily insects, but also birds or sometimes a small mammal. The wooly-haired flowers grow at the end of a leaflet stalk, in cymes (with lateral branches), panicles or racemes.
The family is represented in Southwest Australia by extreme diversity, including around six genera that only occur in that region. The endemic species include the kangaroo paws, Anigozanthos and Macropidia , and the most speciose genus of the family, Conostylis. [9]
15 genera are accepted. [3]
The term "bloodwort" can also apply to Sanguinaria canadensis (more often called bloodroot) or Achillea millefolium (more often called yarrow or common yarrow), in other families.
Smilacaceae, the greenbriers, is a family of flowering plants. While they were often assigned to a more broadly defined family Liliaceae, most recent botanists have accepted the two as distinct families, diverging around 55 million years ago during the Early Paleogene. One characteristic that distinguishes Smilacaceae from most of the other members of the Liliaceae-like Liliales is that it has true vessels in its conducting tissue. Another is that the veins of the leaves, between major veins, are reticulate (net-shaped), rather than parallel as in most monocots.
Dioscoreaceae is a family of monocotyledonous flowering plants, with about 715 known species in nine genera. The best-known member of the family is the yam.
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.
Burmanniaceae is a family of flowering plants, consisting of 99 species of herbaceous plants in eight genera.
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.
Asphodelaceae is a family of flowering plants in the order Asparagales. Such a family has been recognized by most taxonomists, but the circumscription has varied widely. In its current circumscription in the APG IV system, it includes about 40 genera and 900 known species. The type genus is Asphodelus.
Achariaceae is a family of flowering plants consisting of 31 genera and about 155 species of tropical herbs, shrubs, and trees. The APG IV system has greatly expanded the scope of the family by including many genera previously classified in Flacourtiaceae. Molecular data strongly support the inclusion of this family in the order Malpighiales.
Asparagaceae, known as the asparagus family, is a family of flowering plants, placed in the order Asparagales of the monocots. The family name is based on the edible garden asparagus, Asparagus officinalis. This family includes both common garden plants as well as common houseplants. The garden plants include asparagus, yucca, bluebell, and hosta, and the houseplants include snake plant, corn cane, spider plant, and plumosus fern.
Juncaginaceae is a family of flowering plants, recognized by most taxonomists for the past few decades. It is also known as the arrowgrass family. It includes 3 genera with a total of 34 known species.
Hypoxidaceae is a family of flowering plants, placed in the order Asparagales of the monocots.
The Thurniaceae are a family of flowering plants composed of two genera with four species. The botanical name has been recognized by most taxonomists.
The Rapateaceae are a family of flowering plants. The botanical name has been recognized by most taxonomists.
Philydraceae is a family of flowering plants composed of three genera and a total of six known species. Such a family has not been recognized by many taxonomists.
Boryaceae is a family of highly drought-tolerant flowering plants native to Australia, placed in the order Asparagales of the monocots. The family includes two genera, with twelve species in total in Australia.
Tecophilaeaceae is a family of flowering plants, placed in the order Asparagales of the monocots. It consists of nine genera with a total of 27 species.
Tofieldiaceae is a family of flowering plants in the monocot order Alismatales. The family is divided into four genera, which together comprise 28 known species. They are small, herbaceous plants, mostly of arctic and subarctic regions, but a few extend further south, and one genus is endemic to northern South America and Florida. Tofieldia pusilla is sometimes grown as an ornamental.
The Ecdeiocoleaceae comprise a family of flowering plants with two genera and three species. The botanical name has rarely been recognized by taxonomists.
Macropidia fuliginosa, the sole species of genus Macropidia, is a perennial rhizomatous flowering plant. A relation of the kangaroo paws, Anigozanthus, which are also endemic to Southwest Australia, it is referred to as the black kangaroo paw. Bearing unusual black and green flowers, it occurs on a coastal plain from Perth to Geraldton.
Conostylis is a genus of perennial herbs in the Haemodoraceae family, commonly known as cone flowers. All species are endemic to the south west of Western Australia.
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: