I could get the differences between the closely elated species from Lucid Central <https://keyserver.lucidcentral.org/weeds/data/media/Html/aristolochia_elegans.htm> as below:
Dutchman's pipe (*Aristolochia elegans*) is similar to several closely related introduced species that have also become naturalised in Australia, including pelican flower (*Aristolochia grandiflora*), fragrant Dutchman's pipe (*Arsitolochia odoratissima*) and gaping Dutchman's pipe (*Aristolochia ringens*). It is also very similar to the cultivated giant dutchman's pipe (*Aristolochia gigantea*) which is often confused with pelican flower (*Aristolochia grandiflora*) in the horticultural industry. These species can be distinguished by the following differences: - *Dutchman's pipe (Aristolochia elegans) has a small ear-like structure (i.e. auriculate pseudo-stipule) at the base of each leaf stalk*. Its flowers are relatively large and broad (up to 7.5 cm long and 10 cm wide) and its relatively large fruit (4-6 cm long and about 2.5 cm wide) are oblong in shape with a short projection (about 10 mm long) at the tip. - *giant dutchman's pipe (Aristolochia gigantea ) does not have a small ear-like structure (i.e. auriculate pseudo-stipule) at the base of each leaf stalk*. Its flowers are very large and broad (up to 30 cm long and 20 cm wide) and its relatively large fruit (up to 8 cm long and 3 cm wide) are oblong in shape with a very short projection at the tip. - pelican flower (*Aristolochia grandiflora*) does not have a small ear-like structure (i.e. auriculate pseudo-stipule) at the base of each leaf stalk. Its flowers are very large (up to 25 cm long) with a very elongated projection at the base of the flower (i.e. appendix) 20-50 cm long. Its very large fruit are oblong in shape (about 10 cm long and 4-6 cm wide). - fragrant Dutchman's pipe (*Arsitolochia odoratissima*) has a small ear-like structure (i.e. auriculate pseudo-stipule) at the base of each leaf stalk. Its flowers are relatively large and broad (6-12 cm wide) and its moderately large fruit (4.5-8 cm long and 1-1.5 cm wide) are oblong in shape and slightly curved. - gaping Dutchman's pipe (*Aristolochia ringens*) has a small ear-like structure (i.e. auriculate pseudo-stipule) at the base of each leaf stalk. Its flowers are relatively large and narrow (10-25 cm long) and are split into an upper and lower lobe. On 10 May 2018 at 18:51, J.M. Garg <[email protected]> wrote: > Are the bract like thing also look similar between these two species? > > On Thu 10 May, 2018, 5:48 PM Dinesh Valke, <[email protected]> wrote: > >> Checked leaves of both species; they look alike. Let us wait for >> flowering. >> ID of *Aristolochia gigantea* got from the gardener. >> Regards. >> Dinesh >> >> On Thu, May 10, 2018 at 4:04 PM, J.M. Garg <[email protected]> wrote: >> >>> Hi, Dinesh ji, >>> We do not have this species in efi site. >>> It looks similar to *Aristolochia elegans* Mast. >>> <https://sites.google.com/site/efloraofindia/species/a---l/ar/aristolochiaceae/aristolochia/aristolochia-littoralis> >>> in efi site. >>> Pl. check. >>> >>> On 23 April 2018 at 21:44, Dinesh Valke <[email protected]> wrote: >>> >>>> [image: TMC Biodiversity Park] >>>> <https://www.google.com/url?q=https%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdinesh_valke%2F40580764695%2F&sa=D&sntz=1&usg=AFQjCNEGVLFDRKvmf0HbjBtqXM2slId9ow> >>>> TMC Biodiversity Park Thane >>>> *Date*: April 22, 2018 ... *Altitude*: about 15 m (50 feet) asl >>>> ------------------------------ >>>> *Aristolochia gigantea* Mart. >>>> [image: Aristolochia gigantea Mart.] >>>> <https://www.google.com/url?q=https%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdinesh_valke%2F27751597988%2Fin%2Fdateposted%2F&sa=D&sntz=1&usg=AFQjCNEnYTlAq1e9_No2ttD-eY8Az3BVdQ> >>>> >>>> [image: Aristolochia gigantea Mart.] >>>> <https://www.google.com/url?q=https%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdinesh_valke%2F41620486471%2Fin%2Fdateposted%2F&sa=D&sntz=1&usg=AFQjCNGQoX4qlzzwxeAp-46ixIw6mnb0xw> >>>> >>>> Regards. >>>> Dinesh >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "efloraofindia" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> To post to this group, send email to [email protected]. >>>> Visit this group at https://groups.google.com/group/indiantreepix. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> >>> >>> -- >>> With regards, >>> J.M.Garg >>> >>> 'Creating awareness of Indian Flora & Fauna' >>> <http://en.wikipedia.org/wiki/User:Jmgarg1> >>> >>> Winner of Wipro-NFS Sparrow Awards 2014 for efloraofindia >>> <https://sites.google.com/site/efloraofindia/award-for-efloraofindia>. >>> >>> For identification, learning, discussion & documentation of Indian >>> Flora, please visit/ join our Efloraofindia Google e-group >>> <https://groups.google.com/forum/#!forum/indiantreepix> (largest in the >>> world- around 2975 members & 2,90,000 messages on 31.3.18) or Efloraofindia >>> website <https://sites.google.com/site/efloraofindia/> (with a species >>> database of more than 12,000 species & 3,00,000 images). >>> >>> The whole world uses my Image Resource >>> <http://commons.wikimedia.org/wiki/Category:J.M.Garg> of more than a >>> thousand species & eight thousand images of Birds, Butterflies, Plants etc. >>> (arranged alphabetically & place-wise). You can also use them for free as >>> per Creative Commons license attached with each image. >>> >>> Also author of 'A Photoguide to the Birds of Kolkata & Common Birds of >>> India'. >>> >> >> -- With regards, J.M.Garg 'Creating awareness of Indian Flora & Fauna' <http://en.wikipedia.org/wiki/User:Jmgarg1> Winner of Wipro-NFS Sparrow Awards 2014 for efloraofindia <https://sites.google.com/site/efloraofindia/award-for-efloraofindia>. For identification, learning, discussion & documentation of Indian Flora, please visit/ join our Efloraofindia Google e-group <https://groups.google.com/forum/#!forum/indiantreepix> (largest in the world- around 2975 members & 2,90,000 messages on 31.3.18) or Efloraofindia website <https://sites.google.com/site/efloraofindia/> (with a species database of more than 12,000 species & 3,00,000 images). The whole world uses my Image Resource <http://commons.wikimedia.org/wiki/Category:J.M.Garg> of more than a thousand species & eight thousand images of Birds, Butterflies, Plants etc. (arranged alphabetically & place-wise). You can also use them for free as per Creative Commons license attached with each image. Also author of 'A Photoguide to the Birds of Kolkata & Common Birds of India'. -- You received this message because you are subscribed to the Google Groups "efloraofindia" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. Visit this group at https://groups.google.com/group/indiantreepix. For more options, visit https://groups.google.com/d/optout.
