Commersonia bartramia (brown kurrajong, bush Christmas tree)

Commersonia bartramia (L.) Merr. 

Comparing Commersonia bartramia and Commersonia macrostipulata (both closely related). 
Different sized stipules provides the initial diagnostic feature to observe, check and photograph, for distinguishing these two species.

Relevant quotations from Guymer (2006): 

Commersonia macrostipulata Guymer, 
species nov. affinis C. bartramiae sed ab ea stipulis ovatis vel ovati-lanceolatis, et foliis marginibus leviter serratis et tomento abaxiali subtiliter velutino differt. 

Affinities: Commersonia macrostipulata is allied to C. bartramia but differs from this species by its ovate to ovate-lanceolate stipules, and leaves with shallowly serrate leaf margins and finely velutinous abaxial tomentum. 

Etymology: The epithet is derived from Latin *macro-* (large) and *stipulatus* (with stipules), referring to the conspicuous ovate to ovate-lanceolate stipules that characterise the species. 

Botanical Scholarly Literature References:  

• Australian Plant Name Index (APNI) and Australian Plant Census (APC) (2024):
Council of the Heads of Australasian Herbaria (CHAH):
Commersonia bartramia (L.) Merr. → https://id.biodiversity.org.au/name/apni/204397/api/apni-format  .
Viewed: 2025 January 25th .

• Zich F. A., Hyland B. P. M., Whiffin T., Kerrigan R. A. (2020)
Australian Tropical Rainforest Plants information system and botanical matrix identification key - edition 8 ('RFK 8'):
Commersonia bartramia (L.) Merr. fact sheet:
→ https://apps.lucidcentral.org/rainforest/text/entities/Commersonia_bartramia.htm
Main web page: → https://apps.lucidcentral.org/rainforest/.
Viewed: 2025 January 25th.

• Flora of NSW online PlantNet:
PlantNET (The NSW Plant Information Network System).
Royal Botanic Gardens and Domain Trust, Sydney.
Commersonia bartramia (L.) Merr. → https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Commersonia~bartramia 
Viewed: 2025 January 25th .

• Northern Territory Herbarium (2015)
FloraNT Northern Territory Flora Online
Commersonia bartramia (L.) Merr. (MALVACEAE) fact sheet: → https://eflora.nt.gov.au/factsheet?id=24618
Department of Land Resource Management .
http://eflora.nt.gov.au
Viewed: 2025 January 25th .

• Wilkins, C. F., & Whitlock, B. A. (2011) 
A revision of Commersonia including Rulingia (Malvaceae sl or Byttneriaceae). 
Australian Systematic Botany 24 (5): 226–283.
→ https://doi.org/10.1071/SB10031_CO
(update corrigendum after: → https://doi.org/10.1071/SB10031 ).
Viewed: 2025 January 25th.

• Wilkins, C. F., & Whitlock, B. A. (2011) [– furthermore for conferring]
A new Australian genus, Androcalva, separated from Commersonia (Malvaceae sl or Byttneriaceae). 
Australian Systematic Botany 24 (5): 284–349.
→ https://doi.org/10.1071/SB10032_CO
(update corrigendum after: → https://doi.org/10.1071/SB10032 ).
Viewed: 2025 January 25th.

• Whitlock, B. A., Hale, A. M., Indorf, J. L., & Wilkins, C. F. (2011) 
Polyphyly of Rulingia and Commersonia (Lasiopetaleae, Malvaceae sl). 
Australian Systematic Botany 24 (5): 215–225.
→ https://doi.org/10.1071/SB09030
Viewed: 2025 January 25th.

• Guymer, Gordon P. (2006)
New species of Commersonia J.R. Forst. & G.Forst. (Sterculiaceae) from Queensland.
Austrobaileya 7 (2): 365–372.
Available free via Biodiversity Heritage Library, here: 
→ https://www.biodiversitylibrary.org/page/59896973 
Viewed: 2025 January 25th.

• Cooper, Wendy and William T. (2004 June)
Fruits of the Australian Tropical Rainforest.
—page: 530 – Cf. Commersonia macrostipulata had not been formally described at this time of 2004 
and some botanists still included it within the circumscription of this Commersonia bartramia;
some botanists referred to Commersonia macrostipulata as ""Commersonia sp. (Kuranda K.Williams 211)""; 
– it was described later by Guymer, Gordon P. in 2006.
Clifton Hill, Victoria, Australia: Nokomis Editions. ISBN 9780958174213