Biology:Rytidosperma pilosum

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Short description: Species of grass

Rytidosperma pilosum
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Genus: Rytidosperma
Species:
R. pilosum
Binomial name
Rytidosperma pilosum
(R.Br.) Connor & Edgar

Rytidosperma pilosum is a species of true grass in the subfamily Danthonioideae.[1][2] It is indigenous to Australia and naturalised in New Zealand and Hawaii.[3] It was described as Danthonia pilosa in 1850 by Scottish botanist Robert Brown.[4]

Distribution

R. pilosum was identified as naturalized on Humu‘ula, Maui Island in Hawaii for the first time in 2025. It had been present there since 1932 but had been confused with other Rytidosperma species. It may have arrived within 12 accessions of Rytidosperma imported by the Hawaii Agricultural Experiment Station (HAES) from 1913–1937, or in seeds imported accidentally with hay.[5]

Ecology

The rust fungus Uromyces danthoniae, a species found that grows parasitically on the leaves of several Rytidosperma species in New Zealand and Australia, infects Rytidosperma pilosum. It forms dense clusters of orange-brown aecidia on both surfaces of the leaf.[6]

It is also a host of Sphaerodothella danthoniae, a sac fungus that produces black, shiny leaf spots that occasionally coalesce into straight to irregular lines in the leaf surface of several species of Rytidosperma.[7][8]

References

  1. ↑ "Flora of New Zealand | Taxon Profile | Rytidosperma pilosum". https://www.nzflora.info/factsheet/Taxon/Rytidosperma-pilosum.html. 
  2. ↑ Connor, H. E.; Edgar, E. (1979). "Rytidosperma Steudel (Notodanthonia Zotov) in New Zealand" (in en). New Zealand Journal of Botany 17 (3): 311–337. doi:10.1080/0028825X.1979.10426906. ISSN 1175-8643. https://onlinelibrary.wiley.com/doi/abs/10.1080/0028825X.1979.10426906. 
  3. ↑ "Rytidosperma pilosum (R.Br.) Connor & Edgar - Flora of New Zealand Series" (in en). https://floraseries.landcareresearch.co.nz/taxa/ce808274-5cca-4658-80fe-5bbedc48d0ee. 
  4. ↑ Prodromus floræ Novæ Hollandiæ et Insulæ Van-Diemen : exhibens characteres plantarum quas annis 1802-1805. typis R. Taylor et socii. 1810. https://www.biodiversitylibrary.org/page/36315476. 
  5. ↑ Faccenda, Kevin (2025). "Updates to the Hawaiian grass flora: Part 4". https://hbs.bishopmuseum.org/PUBS-ONLINE/pdf/op163p111-129.pdf. 
  6. ↑ McKenzie, E. H. C.; Latch, G. C. M. (July 1980). "Occurrence of Uromyces danthoniae and U. macnabbii , and additions to the graminicolous rust fungi of New Zealand" (in en). New Zealand Journal of Agricultural Research 23 (3): 393–397. doi:10.1080/00288233.1980.10425373. ISSN 0028-8233. Bibcode: 1980NZJAR..23..393M. https://rsnz.onlinelibrary.wiley.com/doi/10.1080/00288233.1980.10425373. 
  7. ↑ "Walker, J.; Francis, S.M. 1977: Sphaerodothis danthoniae (McAlp.) comb. nov. Transactions of the British Mycological Society 69(1): 151-152. - Biota of NZ" (in en). https://biotanz.landcareresearch.co.nz/references/1cb0efc1-36b9-11d5-9548-00d0592d548c/associations. 
  8. ↑ Pearce (2001). "Two new genera in the Phyllachoraceae: Sphaerodothella to accommodate Sphaerodothis danthoniae, and Parberya gen. nov". https://www.researchgate.net/publication/288153643_Two_new_genera_in_the_Phyllachoraceae_Sphaerodothella_to_accommodate_Sphaerodothis_danthoniae_and_Parberya_gen_nov. 

Wikidata ☰ Q15520988 entry



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