Camchaya

Camchaya is a genus of flowering plants in the family Asteraceae. They are native to Asia, including China, Laos, Thailand, Vietnam,[2] and Cambodia.[3]

Camchaya
Camchaya thailandica
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Vernonioideae
Tribe: Vernonieae
Genus: Camchaya
Gagnep.
Type species
Camchaya kampotensis
Synonyms[1]
  • Iodocephalus Thorel ex Gagnep.
  • Thorelia Gagnep.
  • Thoreliella C.Y.Wu

These are annual herbs with coatings of hairs and globose glandular structures. The alternately arranged leaves have wavy or serrated blades on petioles. The inflorescence is a panicle[2] which can be terminal or axillary.[3] Some inflorescences have few flower heads, and some heads are solitary. The hemispherical head has up to 6 layers of phyllaries. It contains many purple florets which are tubular and expanded at the mouth into five pointed lobes and bear a long, branching style. The fruit is a compressed achene, usually with ten ribs, but sometimes with five. Some achenes have a pappus of up to 10 fragile bristles.[2] The pollen of plants in the genus has a unique "6-porate echinolophate" morphology.[3]

Accepted species

Species accepted by the Plants of the World Online as of March 2023:[1]

  • Camchaya bolavenensis Noyori, Komada, Soulad. & Tagane
  • Camchaya calcicola Kitam.
  • Camchaya gracilis (Thorel ex Gagnep.) Bunwong & H.Rob.
  • Camchaya kampotensis Gagnep.
  • Camchaya konplongensis Bien
  • Camchaya loloana Dunn ex Kerr
  • Camchaya pentagona H.Koyama
  • Camchaya spinulifera H.Koyama
  • Camchaya tenuiflora Kerr
  • Camchaya thailandica Bunwong, Chantar. & S.C.Keeley

Some recent publications suggest moving some of these taxa to other genera (Vernonia and Iodocephalopsis).[4][5]

References
  1. "Camchaya Gagnep". Plants of the World Online. Royal Botanic Gardens, Kew. 2023. Retrieved 22 March 2023.
  2. Camchaya. Flora of China.
  3. Bunwong, S., et al. (2012). A new species of Camchaya (Asteraceae, Vernonieae) from Thailand. PhytoKeys 12: 53–57.
  4. Bunwong, S., et al. (2009). Taxonomic notes on Camchaya and Iodocephalus (Vernonieae: Asteraceae), and a new genus Iodocephalopsis. Archived 2013-11-02 at the Wayback Machine Proceedings of the Biological Society of Washington 122(3), 357–63.
  5. Bunwong, S.; Chantaranothai, P.; Keeley, S. C. (2012). "A new species of Camchaya (Asteraceae, Vernonieae) from Thailand". PhytoKeys (12): 53–57. doi:10.3897/phytokeys.12.3221. PMC 3349056. PMID 22645414.


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