Rhipsalis mesembryanthemoides

Rhipsalis mesembryanthemoides
	Rhipsalis mesembryanthemoides
Conservation status
	; Critically Endangered (IUCN 3.1)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Order:	Caryophyllales
Family:	Cactaceae
Subfamily:	Cactoideae
Genus:	Rhipsalis
Species:	R. mesembryanthemoides
Binomial name
	Rhipsalis mesembryanthemoides; Haw.
Synonyms
	Hariota mesembryanthemoides; Rhipsalis echinata;

Rhipsalis mesembryanthemoides is a cactus in the genus Rhipsalis of the family Cactaceae. The first description was in 1821 by Adrian Hardy Haworth. The shoots are reminiscent of the plants of the genus Mesembryanthemum, hence the epithet mesembryanthemoides.

Description

Rhipsalis mesembryanthemoides is an epiphytic plant with strong stems covered by tiny branchlets. Initially this plant grows erect; later it is pendent. The main branches are elongated, cylindrical and woody, 10 to 20 inches long and 1 to 2 millimeters in diameter. The white flowers appear at areoles of the branchlets. They are 8 millimeters long and reach a diameter of 15 millimeters. The short-oblong fruits are white, about 5 millimeters long.

Distribution

This species is widespread in the Brazilian state of Rio de Janeiro, on both sides of the Baja de Guanabara, at an altitude below 600 metres (2,000 ft) above sea level..

Gallery

Plate from Curtis's Botanical Magazine, Volume 58.
Rhipsalis mesembryanthemoides at the botanical garden of Villa Durazzo-Pallavicini, Genova Pegli
Branch of Rhipsalis mesembryanthemoides

References

^ Taylor, N.P. & Zappi, D. (2013). "Rhipsalis mesembryanthemoides". The IUCN Red List of Threatened Species. 2013. IUCN: e.T152443A637316. doi:10.2305/IUCN.UK.2013-1.RLTS.T152443A637316.en. Retrieved 11 January 2018. Database entry includes justification for why this species is critically endangered.

Hunt D.R. et al. (2006): The new cactus lexikon. DH Books, Miborn Port, England. ISBN 0-9538134-5-2
Anderson H.F. et al. (2001): The cactus family. Timber Press, Portland, Oregon, USA. ISBN 0-8819249-8-9
Rhipsalis.com
Cacti Guide
Desert-tropical

[1] Taylor, N.P. & Zappi, D. (2013). "Rhipsalis mesembryanthemoides". The IUCN Red List of Threatened Species. 2013. IUCN: e.T152443A637316. doi:10.2305/IUCN.UK.2013-1.RLTS.T152443A637316.en. Retrieved 11 January 2018. Database entry includes justification for why this species is critically endangered.

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