Uncinia
Template:Short description Template:Automatic taxobox
Uncinia is a genus of flowering plants in the family Cyperaceae, known as hook-sedges in Australia[1] and as hook grasses or bastard grasses in New Zealand.[2] The genus is characterised by the presence of a long hook formed by an extension of the rachilla,[3] which is used to attach the fruit to passing animals (epizoochory), especially birds,[4] and it is this feature which gives the genus its name, from the Latin uncinus, meaning a hook or barb.[5]
Systematics
Uncinia is a "satellite genus" of the very large genus Carex, alongside other satellites such as Cymophyllus, Kobresia, Schoenoxiphium, Vesicarex.[6] Uncinia seems to form a monophyletic group, with the most distinct species being U. kingii, a species which has sometimes been placed in the genus Carex.[3] Similarly, Carex microglochin has sometimes been included in Uncinia, as U. microglochin.[7]
Distribution
Uncinia has a Gondwanan distribution,[3] with most species found Australia, New Zealand and South America,[1] as far north as Mexico and Jamaica.[8] Of the 50–60 species, 30 are endemic to New Zealand,[9] 6 are endemic to the east coast of Australia,[1] and 4 are endemic to the Juan Fernández Islands.[10] Smaller numbers of species are also found in New Guinea, Borneo, the Philippines, Hawaii, Tristan da Cunha, Kerguelen, Île Amsterdam, Île Saint-Paul, and the Prince Edward Islands, although none are known from the mainland of Africa.[8] This distribution suggests that the genus had an origin in Antarctica.[11]
It contains the following species:
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- Uncinia affinis (C. B. Clarke) Hamlin – New Zealand
- Uncinia andina G. A. Wheeler – Argentina
- Uncinia angustifolia Hamlin – New Zealand
- Uncinia araucana G. A. Wheeler – Chile
- Uncinia aspericaulis G. A. Wheeler – Juan Fernández Islands
- Uncinia astonii Hamlin – New Zealand
- Uncinia aucklandica Hamlin – New Zealand
- Uncinia austroamericana G. A. Wheeler – Tierra del Fuego
- Uncinia banksii Boott – New Zealand
- Uncinia bracteosa Phil. – Chile
- Uncinia brevicaulis Thouars – Hawaii, South America, Falkland Islands, Tristan da Cunha, Juan Fernández Islands
- Uncinia caespitosa Boott – New Zealand
- Uncinia chilensis G. A. Wheeler – Chile
- Uncinia clavata (Kük.) Hamlin – New Zealand
- Uncinia compacta R. Br. – Australia
- Uncinia costata Kük. – Juan Fernández Islands
- Uncinia dawsonii Hamlin – New Caledonia
- Uncinia debilior F. Muell. – Lord Howe Island
- Uncinia dikei Nelmes – Marion Island
- Uncinia distans Col. ex Boott – New Zealand
- Uncinia divaricata Boott – New Zealand
- Uncinia douglasii Boott – Juan Fernández Islands
- Uncinia drucei Hamlin – New Zealand
- Uncinia ecuadorensis G. A. Wheeler & Goetgh. – Ecuador
- Uncinia egmontiana Hamlin – New Zealand
- Uncinia elegans (Kük.) Hamlin – New Zealand, Tasmania
- Uncinia erinacea Pers. – South America
- Uncinia ferruginea Boott – New Zealand
- Uncinia filiformis Boott – New Zealand
- Uncinia flaccida S. T. Blake – Victoria (Australia)
- Uncinia fuscovaginata Kük. – New Zealand
- Uncinia gracilenta Hamlin – New Zealand
- Uncinia hamata (Sw.) Urb. – Neotropics
- Uncinia hookeri Boott – New Zealand's subantarctic islands, Macquarie Island
- Uncinia involuta Hamlin – New Zealand
- Uncinia kingii R.Br. ex Boott – Chile
- Uncinia koyamai Gómez-Laur. – Costa Rica
- Uncinia lacustris G. A. Wheeler – Ecuador
- Uncinia laxiflora Petrie – New Zealand
- Uncinia lechleriana Steud. – Magellan Region
- Uncinia leptostachya Raoul – New Zealand
- Uncinia loliacea Phil. – Chile
- Uncinia longifructus (Kük.) Petrie – New Zealand
- Uncinia macloviformis G. A. Wheeler – Juan Fernández Islands
- Uncinia macrophylla Steud. – Chile
- Uncinia macrotricha Franch. – Patagonia
- Uncinia meridensis Steyerm. – Venezuela
- Uncinia multifaria Nees ex Boott – Chile
- Uncinia multifolia Boeckeler – Colombia
- Uncinia negeri Kük. – Chile
- Uncinia nemoralis K. L. Wilson – Australia
- Uncinia nervosa Boott – New Zealand, Tasmania
- Uncinia obtusifolia Boott – New Zealand
- Uncinia ohwiana Koyama – New Guinea
- Uncinia paludosa G. A. Wheeler & Goetgh. – Ecuador
- Uncinia perplexa Boott – Surville Cliffs (New Zealand)
- Uncinia phleoides (Cav.) Pers. – Juan Fernández Islands, South America
- Uncinia purpurata Petrie – New Zealand
- Uncinia rapaensis H. St. John – Tubuai
- Uncinia rubra Boott – New Zealand
- Uncinia rupestris Raoul – New Zealand
- Uncinia scabra Boott – New Zealand
- Uncinia scabriuscula G. A. Wheeler – Argentina, Chile
- Uncinia sclerophylla Nelmes – New Guinea
- Uncinia silvestris Hamlin – New Zealand
- Uncinia sinclairii Boott – New Zealand
- Uncinia smithii Phil. – South Georgia, Falkland Islands
- Uncinia strictissima Petrie – New Zealand
- Uncinia subsacculata G. A. Wheeler & Goetgh. – Ecuador
- Uncinia subtrigona Nelmes – Borneo, New Guinea
- Uncinia sulcata K. L. Wilson – Australia
- Uncinia tenella R. Br. – Australia
- Uncinia tenuifolia G. A. Wheeler & Goetgh. – Ecuador
- Uncinia tenuis Poeppig ex Kunth – Juan Fernández Islands, South America
- Uncinia uncinata (L. f.) Kük. – New Zealand, Hawaii
- Uncinia viridis (C. B. Clarke) Edgar – New Zealand
- Uncinia zotovii Hamlin – New Zealand
References
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