| Family | Asteraceae (alt. Compositae) |
| Scientific name | Pertya robusta (Maximovicz) Beauvois |
| Synonyms | Macroclinidium robustum Maximovicz |
| Common name | (Japanese common name) kashiwa-ba haguma (カシワバハグマ, 柏葉白熊 [meaning: kashiwa leaved haguma (kashiwa = Quercus dentata, haguma = Bos grunniens' wool)]) |
| (English common name) none | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu, Okinawa |
| (Other nations) none | |
| Habitat | Mountane forest |
| Chromosomal number | 2n=24 |
| Description | Plants electing 30-70cm tall. Leaves 10-20cm long. Flowers involucres 17-27mm long, flowering in September to November. Fruits 10-11mm long. Perennial plants. |
| Reference | New Tetracyclic Triterpenoids from Pertya robusta (MAXIM.) BEAUV. and Triterpene Components of Its Related Plants |
| The karyotype analysis and its karyotaxonomic considerations in the tribe Mutisieae | |
| Phylogeny and Biogeography of the Genus Ainsliaea (Asteraceae) in the Sino-Japanese Region based on Nuclear rDNA and Plastid DNA Sequence Data |
| October 2006 at Mt. Tsukuba |
October 2007 at lowland forest |
October 2007 at lowland forest |
| October 2006 at Mt. Tsukuba | October 2007 at lowland forest |
October 2007 at lowland forest |
| December 2008 at Tsukuba Botanical Garden |
December 2008 at Tsukuba Botanical Garden |