''Disphyma papillatum'', commonly known as Chatham Island ice plant, is a species of flowering plant in the family

Aizoaceae The Aizoaceae, or fig-marigold family, is a large family of dicotyledonous flowering plants containing 135 genera and about 1800 species. They are commonly known as ice plants or carpet weeds. They are often called vygies in South Africa and New ...

and is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found els ...

to the

Chatham Islands The Chatham Islands ( ) ( Moriori: ''Rēkohu'', 'Misty Sun'; mi, Wharekauri) are an archipelago in the Pacific Ocean about east of New Zealand's South Island. They are administered as part of New Zealand. The archipelago consists of about t ...

of New Zealand. It is a succulent,

prostrate Prostrate may refer to:- *Prostration, a position of submission in religion etc. *Prone position, a face-down orientation of the body *Prostrate shrub A prostrate shrub is a woody plant, most of the branches of which lie upon or just above the ...

herb In general use, herbs are a widely distributed and widespread group of plants, excluding vegetables and other plants consumed for macronutrients, with savory or aromatic properties that are used for flavoring and garnishing food, for medicina ...

with flattened, pimply, trailing stems, leaves that are triangular in cross-section, and white to pink, dark blue or purple daisy-like flowers.

Description

''Disphyma papillatum'' is a succulent, prostrate herb with pimply, two-angled, trailing stems rooting at the

nodes In general, a node is a localized swelling (a "knot") or a point of intersection (a vertex). Node may refer to: In mathematics *Vertex (graph theory), a vertex in a mathematical graph *Vertex (geometry), a point where two or more curves, lines, ...

, up to long, the internodes mostly long. The leaves are arranged in pairs, stem-clasping with their bases joined, each leaf triangular in cross-section, mostly long and wide, tapering towards the tip. The flowers are superficially daisy-like, in diameter on a pimply pedicel long with five

sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coined ...

s at the base. The petals are white, pink, dark blue or purple in three to five rows, each petal long and wide. There are many

stamen The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filam ...

s with yellow

anthers The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filam ...

and five or six styles. Flowering occurs from November to January and the fruit is a capsule in diameter before opening. It is similar to ''

Disphyma crassifolium ''Disphyma crassifolium'', commonly known as round-leaved pigface, is a species of flowering plant in the family Aizoaceae and is native to Australia and the Cape Provinces of South Africa. It is a prostrate, succulent annual shrub or short-li ...

'' but is distinguished from that species by its pimply, rather than smooth, and flattened, two-angled rather than cylindrical stems.

Taxonomy

''Disphyma papillatum'' was first formally described in 1971 by

Robert Chinnock Robert James "Bob" Chinnock (born 3 July 1943) is a New Zealand-born Australian botanist who worked at the State Herbarium of South Australia as a senior biologist. He retired in 2008 but still works as an honorary research associate. His resea ...

in the ''

New Zealand Journal of Botany New is an adjective referring to something recently made, discovered, or created. New or NEW may refer to: Music * New, singer of K-pop group The Boyz Albums and EPs * ''New'' (album), by Paul McCartney, 2013 * ''New'' (EP), by Regurgitator, ...

''.

Distribution and habitat

''Carpobrotus glaucescens'' is endemic to the Chatham Islands, including the main island, Rangiuaria,

Rangatira In Māori culture, () are tribal chiefs, the hereditary Māori leaders of a hapū. Ideally, rangatira were people of great practical wisdom who held authority () on behalf of the tribe and maintained boundaries between a tribe's land and tha ...

Mangere Island Mangere Island (Moriori: ''Maung’ Rē'') is part of the Chatham Islands archipelago, located about east of New Zealand's South Island and has an area of . The island lies off the west coast of Pitt Island, south-east of the main settlement i ...

, Little Mangere Island,

Moturoa Moturoa is a coastal suburb of New Plymouth, in the western North Island of New Zealand. It is located to the west of the city centre, bordering Port Taranaki and the Sugar Loaf Islands. One of the islands, Moturoa, the largest, shares its nam ...

and Castle Island.

References

{{Taxonbar, from=Q15577574 Aizoaceae Flora of New Zealand Taxa named by Robert Chinnock Plants described in 1971