The Alismatales (alismatids) are an order of flowering plants including about 4,500 species. Plants assigned to this order are mostly tropical or aquatic. Some grow in fresh water, some in marine habitats. Perhaps the most important food crop in the order is the corm of the taro plant, Colocasia esculenta.
The Potamogetonaceae, commonly referred to as the pondweed family, is an aquatic family of monocotyledonous flowering plants. The roughly 110 known species are divided over six genera. The largest genus in the family by far is Potamogeton, which contains about 100 species.
Aponogeton madagascariensis is commonly known as Madagascar laceleaf, lattice leaf or lace plant. It is an aquatic plant native to Madagascar, popularly sold for use in aquariums.
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.
Aponogeton distachyos or Aponogeton distachyum, also known as waterblommetjie, Cape-pondweed, water hawthorn, vleikos and Cape pond weed is an aquatic flowering plant.
Myrothamnus is a genus of flowering plants, consisting of two species of small xerophytic shrubs, in the southern parts of tropical Africa and in Madagascar. Myrothamnus is recognized as the only genus in the family Myrothamnaceae.
Najadales is the botanical name of an order of flowering plants. A well-known system that used this name is the Cronquist system (1981), which used this name for an order in subclass Alismatidae with this circumscription:
Flagellaria is the sole genus in the flowering plant family Flagellariaceae with only five species. The family has historically been recognized by few taxonomists. The APG II system, of 2003, does recognize such a family, and assigns it to the order Poales in the clade commelinids, in the monocots.
Aponogeton crispus is an aquatic plant species.
Aponogeton longiplumulosus is a submerged aquatic plant that is native to Madagascar. It possesses an elongated rhizome 2–3 cm in diameter. The leaves are an olive green-brown, 8 - 14 inches (20–35 cm) long and 2.5 inches (6 cm) broad, with a fluted margin and a petiole up to about 24 inches (60 cm) long. No floating leaves are formed. New leaf colour forms have been introduced recently. The flowers are a dark violet in colour.
Aponogeton boivinianus is a species of flowering plant in the Aponogetonaceae family. It is Native to Madagascar
Aponogeton rigidifolius is a species of freshwater plant native to Sri Lanka. In the wild it grows in deep water at temperatures of 68 to 77 °F in sandy soil with the water pH at 7.2.
Heinrich (Harry) Wilhelm Eduard van Bruggen was a Dutch amateur botanist.
Aponogeton bernerianus is an aquatic plant from eastern Madagascar. It has a 3 cm thick tuber or thick and branchy rhizome. Leaf blade up to 13 cm petiolate, strap-shaped, highly bullate and undulate, up to 50(-120) cm long and 1.5-6.5(-10) cm wide, dark green coloration. Peduncle up to 75 cm long, tapering towards the inflorescence. Spathe up to 15 mm long, caducous. Inflorescence with 3-15 up to 8-cm long spikes with omnilateral flowers; 2(3) white tepals; 6 stamens; 3(4) carpels with 2 ovules each. Fruit about 10 x 7 mm. Seed about 7x4 mm in size, simple testa.
Aponogeton capuronii is an aquatic plant found in southeastern Madagascar.
Aponogeton lakhonensis is a species of an aquatic genus Aponogeton, itself the only genus in the Aponogetonaceae family. This species with a yellow-flowered single spike rising above the water, is found in ricefields, ponds and slow-moving streams of tropical and sub-tropical Asia. An outlier population occurs in Sulawesi, the main area of occurrence is from Thailand to Zhōngguó/China and Assam in India. It is more closely related to tropical Australian species of Aponogeton than it is to other Southeast Asian species. In Thailand the whole plant is eaten is salads, whereas Cambodians prefer the leaves alone served with fish sauce.
Aponogeton ranunculiflorus, the Sehlabathebe water lily, is a tiny and endangered species of aquatic plant, that belongs to the pondweed family Aponogetonaceae. It is protected in the Sehlabathebe National Park in the mountains of Lesotho, where it is very localized, and nearby in the uKhahlamba / Drakensberg Park of KwaZulu-Natal, South Africa. Outside these areas it is seriously threatened. It is found in sandstone rock pools, up to 7 metres deep, and in permanently wet tarns or sensitive high altitude mires, at altitudes between about 2,600 and 3,200 metres. Its spiralled stems allow the flowers to remain at surface level. Threats to the species include overgrazing and trampling by cattle, overburning, erosion and subsistence farming. Their small (1 cm) corms can survive the drying out of the pools, or being frozen into the muddy bottoms.
Alismatid monocots is an informal name for a group of early branching monocots, consisting of two orders, the Acorales and Alismatales. The name has also been used to refer to the Alismatales alone. Monocots are frequently treated as three informal groupings based on their branching from ancestral monocots and shared characteristics: alismatid monocots, lilioid monocots and commelinid monocots. Research at the Royal Botanical Gardens, Kew is organised into two teams I: Alismatids and Lilioids and II: Commelinids. A similar approach is taken by Judd in his Plant systematics.
