Samiksha Jaiswal (Editor)


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Kingdom  Plantae
Family  Rosaceae
Tribe  Sanguisorbeae
Scientific name  Acaena
Rank  Genus
Order  Rosales
Subfamily  Rosoideae
Subtribe  Sanguisorbinae
Higher classification  Rosaceae
Acaena httpsuploadwikimediaorgwikipediacommons55
Lower classifications  Acaena microphylla 'Kupferteppich', Acaena novae‑zelandiae, Acaena pinnatifida, Acaena sericea, Acaena rorida

Caring for dracaena plants

Acaena is a genus of about 100 species of mainly evergreen, creeping herbaceous perennial plants and subshrubs in the family Rosaceae, native mainly to the Southern Hemisphere, notably New Zealand, Australia and South America, but with a few species extending into the Northern Hemisphere, north to Hawaii (A. exigua) and California (A. pinnatifida).


Acaena TERRAIN Taranaki Educational Resource Research Analysis

The leaves are alternate, 4–15 centimetres (1.6–5.9 in) long, and pinnate or nearly so, with 7–21 leaflets. The flowers are produced in a tight globose [inflorescence] 1–2 centimetres (0.39–0.79 in) in diameter, with no petals. The fruit is also a dense ball of many seeds; in many (but not all) species the seeds bear a barbed arrowhead point, the seedhead forming a burr which attaches itself to animal fur or feathers for dispersal.

Acaena TERRAIN Taranaki Educational Resource Research Analysis

Several Acaena species in New Zealand are known by the common name bidibid. The word is written variously bidi-bidi, biddy-biddy, biddi-biddi, biddi-bid and a number of other variations. These names are the English rendition of the original Māori name of piripiri. The plant is also called the New Zealand burr. The species Acaena microphylla has gained the Royal Horticultural Society's Award of Garden Merit.

Acaena Acaena inermis 39Purpurea39 New Zealand Purple Burr Bidibidi


The generic name Acaena is derived from the Greek "akaina" (thorn), referring to the spiny hypanthium.

Invasive species

Acaena Acaena inermis 39Purpurea39 New Zealand Purple Burr Bidibidi

Some species have been introduced accidentally to other areas, attached to sheep's wool, and have become invasive species. A. novae-zelandiae, one of the bidibids from New Zealand, is the most commonly encountered species in the United Kingdom, where it is often abundant on coastal sand dunes, crowding out native vegetation and creating an often painful nuisance with the barbed burrs. In California, A. pallida, A. novae-zelandiae and A. anserinifolia are considered serious weeds.

Acaena Acaena novaezelandiae Swinburne Commons
Acaena Acaena L Checklist View


Acaena Wikipedia