Aristolochia (Siphisia)
Creators: name: Kashung, Soyala
name: Gajurel, Padma Raj
name: Singh, Binay
name: Barman, Rimi
name: Yakang, Tage
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Piperales
Aristolochiaceae
Aristolochia

description: Indian Siphisia   
 With the addition of the present new species, the number of Siphisia species in India has become eight. A key for identification of the Indian species in the subgenus Siphisia is given below.    Keys to the Indian species of Aristolochia in subgen. Siphisia   
 1a. Limbs saccate, lobe distinct............................................................................................................................................. A. transsecta   
1b. Limbs not saccate, lobe distinct or indistinct.....................................................................................................................................2  
2a. Limbs bell or trumpet shaped, lobe margin distinctly revolute..........................................................................................................3  
2b. Limbs abruptly discoid, lobe margin slightly or non-revolute...........................................................................................................5  
 3a. Leaves palmately 3-lobed ............................................................................................................................................. A. platanifolia   
3b. Leaves entire.......................................................................................................................................................................................4  
 4a. Perianth tube 1.5–2 cm long, limb nearly rounded ............................................................................................................. A. saccata   
 4b. Perianth tube 3–4 cm long, limb nearly rectangular......................................................................................................... A. cathcartii   
5a. Flowers on old branches, cauliflorous................................................................................................................................................6  
5b. Flowers on young branches, ramiflorous...........................................................................................................................................7  
 6a. Flowers in cluster, capsule densely pubescent, apex stipitate............................................................................................. A. rethyae 6b. Flowers solitary and axillary, capsule lightly pubescent, apex folded ............................................................................... A. griffithii   
 7a. Perianth glabrescent, limb indistinctly 3-lobed.................................................................................................................. A. dilatata   
 7b. Perianth villous, limb distinctly 3-lobed ...................................................................................................................... A. punjabensis
description: Published as part of Kashung, Soyala, Gajurel, Padma Raj, Singh, Binay, Barman, Rimi & Yakang, Tage, 2022, Aristolochia rethyae, a new species from Arunachal Pradesh, north-east India, pp. 1-7 in Phytotaxa 564 (1) on pages 4-5, DOI: 10.11646/phytotaxa.564.1.1, http://zenodo.org/record/7077725