Helanthium angustifolia
Helanthium haiki lau, ʻepekema inoa Helanthium bolivianum "Angustifolius". Wahi a ka hoʻohālikelike hou ʻana, ʻaʻole pili kēia mea kanu iā Echinodorus, akā ua hoʻokaʻawale ʻia i kahi ʻano ʻokoʻa ʻo Helanthium. Eia naʻe, ʻike ʻia ka inoa mua, me ka Latin Echinodorus angustifolia, i nā wehewehe ʻana i nā kumu like ʻole, no laila hiki ke manaʻo ʻia he synonym.
He kanaka maoli ka mea kanu i ʻAmelika Hema mai ke kahawai ʻo Amazon River. Ke ulu nei ia ma lalo o ka wai a ma luna o ka wai, e hoʻopilikia nui i ke ʻano a me ka nui o nā lau lau. Ma lalo o ka wai, ua hoʻokumu ʻia nā kahawai lōʻihi o nā kala ʻōmaʻomaʻo māmā me nā veins e pili ana i 3-4 mm ākea a hiki i 50 cm ka lōʻihi a ʻoi aku. ʻO ka lōʻihi e pili ana i ke kiʻekiʻe o ka hoʻomālamalama, ʻoi aku ka mālamalama - ka pōkole. I ka mālamalama ikaika, hoʻomaka ia e like me Vallisneria dwarf. No laila, ma ka hoʻoponopono ʻana i ka mālamalama, hiki ke hoʻokō i nā pae like ʻole o ka ulu. ʻAʻole koho ʻo Echinodorus angustifolia i nā kūlana ulu. Akā naʻe, mai kanu i ka lepo momona. No ka laʻana, ʻo ka nele o ka hao e alakaʻi i ka mae ʻana o ke kala.
Ma ka ʻāina, i kahi paludarium humid, ʻoi aku ka pōkole o ka mea kanu. Loaʻa nā lau i kahi ʻano lanceolate a oblong paha, 6 a 15 knm ka lōʻihi a 6 a 10 mm ākea. Me nā hola o ke ao ma lalo o 12 mau hola, ʻike ʻia nā inflorescences keʻokeʻo liʻiliʻi.
