| Silver arrowreed | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Restionaceae |
| Genus: | Ceratocaryum |
| Species: | C. argenteum |
| Binomial name | |
| Ceratocaryum argenteum Nees ex Kunth | |
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| Distribution of Ceratocaryum argenteum | |
| Synonyms [1] | |
| |
Ceratocaryum argenteum, commonly known as silver arrowreed, is a species of plant in the Restionaceae family and is native to the Cape Provinces of South Africa. [1]
The caespitose plants are 2–3 metres (79–118 in) tall and grow in coastal sands at elevations of 50–200 metres (160–660 ft) above sea level. They flower throughout April and May. The plants release their tuberculate nut fruits in January. [2] [3]
Ceratocaryum argenteum has an unusual seed dispersal strategy. It employs chemical compounds to deceive dung beetles, which treat the seeds as if they were true animal fecal matter. The beetles bury the seeds. [4] This strategy of faecal mimicry is shared with another species, namely Ceratocaryum pulchrum. [2] The seeds are not consumed or gathered by rodents. [5] Their strategy of adaption to wildfires is to re-grow from seeds after such fires occur. [3]
This species is native to the southwestern Cape Provinces of South Africa, from Albertinia to Paarl. [1]
It is the sister species of Ceratocaryum pulchrum. [2]
The Restionaceae, also called restiads and restios, are a family of flowering plants native to the Southern Hemisphere; they vary from a few centimeters to 3 meters in height. Following the APG IV (2016): the family now includes the former families Anarthriaceae, Centrolepidaceae and Lyginiaceae, and as such includes 51 genera with 572 known species. Based on evidence from fossil pollen, the Restionaceae likely originated more than 65 million years ago during the Late Cretaceous period, when the southern continents were still part of Gondwana.
Dung beetles are beetles that feed on feces. Some species of dung beetles can bury dung 250 times their own mass in one night.
In spermatophyte plants, seed dispersal is the movement, spread or transport of seeds away from the parent plant. Plants have limited mobility and rely upon a variety of dispersal vectors to transport their seeds, including both abiotic vectors, such as the wind, and living (biotic) vectors such as birds. Seeds can be dispersed away from the parent plant individually or collectively, as well as dispersed in both space and time. The patterns of seed dispersal are determined in large part by the dispersal mechanism and this has important implications for the demographic and genetic structure of plant populations, as well as migration patterns and species interactions. There are five main modes of seed dispersal: gravity, wind, ballistic, water, and by animals. Some plants are serotinous and only disperse their seeds in response to an environmental stimulus. These modes are typically inferred based on adaptations, such as wings or fleshy fruit. However, this simplified view may ignore complexity in dispersal. Plants can disperse via modes without possessing the typical associated adaptations and plant traits may be multifunctional.
Zoophily, or zoogamy, is a form of pollination whereby pollen is transferred by animals, usually by invertebrates but in some cases vertebrates, particularly birds and bats, but also by other animals. Zoophilous species frequently have evolved mechanisms to make themselves more appealing to the particular type of pollinator, e.g. brightly colored or scented flowers, nectar, and appealing shapes and patterns. These plant-animal relationships are often mutually beneficial because of the food source provided in exchange for pollination.
Carrion flowers, also known as corpse flowers or stinking flowers, are mimetic flowers that emit an odor that smells like rotting flesh. Apart from the scent, carrion flowers often display additional characteristics that contribute to the mimesis of a decaying corpse. These include their specific coloration, the presence of setae and orifice-like flower architecture. Carrion flowers attract mostly scavenging flies and beetles as pollinators. Some species may trap the insects temporarily to ensure the gathering and transfer of pollen.
Leucadendron argenteum is an endangered plant species in the family Proteaceae, which is endemic to a small area of the Cape Peninsula, South Africa. Most grow in and around the city of Cape Town, but outlying populations exist near Somerset West (Silwerboomkloof), Paarl and Stellenbosch. It is a protected tree in South Africa.
Leucadendron is a genus of about 80 species of flowering plants in the family Proteaceae, endemic to the Cape Provinces and KwaZulu-Natal in South Africa, where they are a prominent part of the fynbos ecoregion and vegetation type.
Seed predation, often referred to as granivory, is a type of plant-animal interaction in which granivores feed on the seeds of plants as a main or exclusive food source, in many cases leaving the seeds damaged and not viable. Granivores are found across many families of vertebrates as well as invertebrates ; thus, seed predation occurs in virtually all terrestrial ecosystems. Seed predation is commonly divided into two distinctive temporal categories, pre-dispersal and post-dispersal predation, which affect the fitness of the parental plant and the dispersed offspring, respectively. Mitigating pre- and post-dispersal predation may involve different strategies. To counter seed predation, plants have evolved both physical defenses and chemical defenses. However, as plants have evolved seed defenses, seed predators have adapted to plant defenses. Thus, many interesting examples of coevolution arise from this dynamic relationship.
The Cape spiny mouse is a murid rodent found in the Western Cape province of South Africa. They have a dorsal covering of spiny hairs with dark grey-brown colouration, and a white underbelly. The Cape spiny mouse has large eyes and ears and a scaly, nearly bald tail that is brittle and can break off readily either as a whole or in part if it is caught. Their total length is 17 cm (6.7 in), with an 8 cm (3.1 in) tail, and they typically weigh 22 g (0.78 oz).
Hydnora africana is an achlorophyllous plant in the subfamily Hydnoroideae, native to southern Africa that is parasitic on the roots of members of the family Euphorbiaceae. It is also called jakkalskos or jackal food. The specific epithet africana means to be from Africa. Molecular data has suggested that Hydnoroideae is a "basal angiosperm" solidifying its place among the more primitive flowering plants. Hydnoraceae are the only angiosperms known to have no leaves or scales and are considered obligate parasites, completely dependent on their hosts to survive. The plant grows underground, except for a fleshy flower that emerges above ground and emits an odour of faeces to attract its natural pollinators, dung beetles and carrion beetles. The vegetative body of the plants has been reduced to only consisting of roots and flowers. The flowers act as temporary traps, retaining the beetles that enter long enough for them to pick up pollen.
Moraea aristata is a species of flowering plant in the family Iridaceae. It is referred to by the common names blue-eyed uintjie or Blouooguintjie in Afrikaans.It is endemic to the city of Cape Town and is considered to be critically endangered.
Pyrus bourgaeana, the Iberian pear, is a close relative of Pyrus communis L. The latter was domesticated about 2500 years ago. This monoecious small tree is widely distributed across the southern Iberian Peninsula and northern Morocco, where it coexists with four Pyrus species: P. communis L., P. cordata Dew., P. spinosa Forssk, and P. nivalis Jacq. Characteristics to discriminate these species are the width of fruit peduncle, petal size, leaf width and petiole length served to the taxa.
Coleonema pulchellum, commonly known as confetti bush, buchu, diosma or breath of heaven, is a shrub which is endemic to the Cape Provinces of South Africa.
Ceratocaryum is a group of plants in the Restionaceae described as a genus in 1836. The entire genus is endemic to Cape Province in South Africa.
Diplochory, also known as “secondary dispersal”, “indirect dispersal” or "two-phase dispersal", is a seed dispersal mechanism in which a plant's seed is moved sequentially by more than one dispersal mechanism or vector. The significance of the multiple dispersal steps on the plant fitness and population dynamics depends on the type of dispersers involved. In many cases, secondary seed dispersal by invertebrates or rodents moves seeds over a relatively short distance and a large proportion of the seeds may be lost to seed predation within this step. Longer dispersal distances and potentially larger ecological consequences follow from sequential endochory by two different animals, i.e. diploendozoochory: a primary disperser that initially consumes the seed, and a secondary, carnivorous animal that kills and eats the primary consumer along with the seeds in the prey's digestive tract, and then transports the seed further in its own digestive tract.
Protea recondita, also known as the hidden sugarbush, is a flowering plant of the genus Protea within the family Proteaceae, which is endemic to the Cape Region of South Africa, and distributed from the Piketberg and Cederberg to the Groot Winterhoek mountains. The flowers of this unusual plant are pollinated by non-flying mammals: rodents and elephant shrews. In the Afrikaans language it is known as gesigtoehouprotea or skaamroos.
Protea intonsa, also known as the tufted sugarbush, is a flowering plant of the genus Protea within the family Proteaceae, endemic to South Africa, where it is distributed from the eastern Swartberg and Kammanassie Mountains to the Baviaanskloof mountains. In Afrikaans it is known as klossie-suikerbos.
Drosanthemum lavisii is a succulent plant in the ice plant family, Aizoaceae, indigenous to the Overberg region of the Western Cape Province, South Africa.
Protea nana, also known as the mountain rose or mountain-rose sugarbush, is a flowering shrub which belongs within the genus Protea.
Protea pruinosa, also known as frosted sugarbush or burnished protea, is a flowering shrub which belongs to the genus Protea within the botanical family Proteaceae. The plant is endemic to the southwestern Cape Region of South Africa.
Media related to Ceratocaryum argenteum at Wikimedia Commons