Asystasia alba is an erect woody herb, growing to 0.5–0.75 m in height. Its 30–140 mm long leaves are ovate, acuminate or acute, pale green in colour and usually bristly when young. The inflorescence is 60–80 mm long, the flowers single or occasionally paired, the bracts and bracteoles about 2 mm long and the pedicels 1.5–3 mm long. The corolla is white or violet, and the tube 14–18 mm long. The capsule is usually 2-seeded and about 26 mm long. The seeds are 4 mm long.[2]
Asystasia alba is a variable species; it forms part of a species complex that includes A. australasica and A. oppositiflora, but differs from both of them in having single flowers at each axil.[2]
Distribution and habitatedit
Found only on Christmas Island, the plant occurs in cleared areas on the island's terraces up to about 200 m above sea level.[2]
asystasia, alba, species, tropical, herb, family, acanthaceae, endemic, christmas, island, australian, territory, north, eastern, indian, ocean, specific, epithet, comes, from, latin, alba, white, referring, colour, flowers, scientific, classificationkingdom, . Asystasia alba is a species of tropical herb in the family Acanthaceae It is endemic to Christmas Island an Australian territory in the north eastern Indian Ocean Its specific epithet comes from the Latin alba white referring to the colour of its flowers Asystasia albaScientific classificationKingdom PlantaeClade TracheophytesClade AngiospermsClade EudicotsClade AsteridsOrder LamialesFamily AcanthaceaeGenus AsystasiaSpecies A albaBinomial nameAsystasia albaRidl 1 Contents 1 Description 2 Distribution and habitat 3 References 3 1 Notes 3 2 SourcesDescription editAsystasia alba is an erect woody herb growing to 0 5 0 75 m in height Its 30 140 mm long leaves are ovate acuminate or acute pale green in colour and usually bristly when young The inflorescence is 60 80 mm long the flowers single or occasionally paired the bracts and bracteoles about 2 mm long and the pedicels 1 5 3 mm long The corolla is white or violet and the tube 14 18 mm long The capsule is usually 2 seeded and about 26 mm long The seeds are 4 mm long 2 Asystasia alba is a variable species it forms part of a species complex that includes A australasica and A oppositiflora but differs from both of them in having single flowers at each axil 2 Distribution and habitat editFound only on Christmas Island the plant occurs in cleared areas on the island s terraces up to about 200 m above sea level 2 References editNotes edit Ridley 1906 a b c Flora of Australia Online Sources edit Ridley H N 1906 Journal of the Straits Branch of the Royal Asiatic Society 45 209 a href Template Cite journal html title Template Cite journal cite journal a Missing or empty title help Asystasia alba Ridl Flora of Australia Online Australian Biological Resources Study 1993 Retrieved 2010 11 25 nbsp This Acanthaceae article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Asystasia alba amp oldid 1055463300, wikipedia, wiki, book, books, library,
