Typhonium Schott 1829
Authors/Creators
- 1. Institute of Biotechnology and Food Technology, Industrial University of Ho Chi Minh City, No. 12 Nguyen Van Bao Street, Go Vap District, Ho Chi Minh City, Vietnam. & vanhongthien @ iuh. edu. vn; https: // orcid. org / 0000 - 0003 - 0151 - 5068
- 2. Binh Chau-Phuoc Buu Nature Reserve, Bung Rieng Ward, Xuyen Moc District, Ba Ria-Vung Tau Province, Vietnam. & lvsonplant @ gmail. com; https: // orcid. org / 0000 - 0003 - 0151 - 0646
- 3. Department of Ecology and Evolutionary Biology, University of Science, Vietnam National University HCMC, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam. & Vietnam National University-HCMC, Linh Trung Ward, Thu Duc City, Ho Chi Minh City.
- 4. Southern Institute of Ecology, Vietnam Academy of Science and Technology, No. 1 D, TL 29 Street, Thanh Loc Ward, District 12, Ho Chi Minh City, Vietnam. & nguyen _ dat 700 @ yahoo. com; https: // orcid. org / 0000 - 0002 - 3687 - 1567
- 5. Southern Institute of Ecology, Vietnam Academy of Science and Technology, No. 1 D, TL 29 Street, Thanh Loc Ward, District 12, Ho Chi Minh City, Vietnam. & ntqtrung @ gmail. com; https: // orcid. org / 0000 - 0003 - 4366 - 2381
- 6. Southern Institute of Ecology, Vietnam Academy of Science and Technology, No. 1 D, TL 29 Street, Thanh Loc Ward, District 12, Ho Chi Minh City, Vietnam. & nhcuongem @ gmail. com; https: // orcid. org / 0000 - 0001 - 8707 - 2944
- 7. Southern Institute of Ecology, Vietnam Academy of Science and Technology, No. 1 D, TL 29 Street, Thanh Loc Ward, District 12, Ho Chi Minh City, Vietnam. & hongtruongluu @ gmail. com; https: // orcid. org / 0000 - 0002 - 7036 - 7081
Description
Key to the 19 presently known Vietnamese species of Typhonium
Updated from Van et al. (2017).
1. Leaves perfectly trifoliolate........................................................................................................................................... T. thatsonense
- Not as above .......................................................................................................................................................................................2
2. Sterile interstice of spadix entirely covered with staminodes ..................................................................................... T. flagelliforme
- Only base of sterile interstice of spadix covered with staminodes.....................................................................................................3
3. Spathe limb thin, lanceolate, elongate-triangular...............................................................................................................................4
- Spathe limb thick, ovate to ovate-triangular.....................................................................................................................................14
4. Leaves fully pedate with 5 or 7 leaflets..............................................................................................................................................5
- Leaves entire and/or 3-lobed ..............................................................................................................................................................8
5. Leaves with 7 leaflets, leaf lobes linear to or linear-lanceolate............................................................................................. T. lineare
- Leaves with 5 leaflets, leaf lobes ovate, elliptic to elliptic-lanceolate ...............................................................................................6
6. Spadix much longer than spathe.................................................................................................................................... T. vermiforme
- Spadix almost as long as spathe .........................................................................................................................................................7
7. Ovaries obovoid; stigmas light yellow to white; staminodes subulate, with acuminate apices ................................... T. dongnaiense
- Ovaries elongate or lageniform; stigmas red; staminodes elongate-clavate, with dilated and flattened apices........... T. bachmaense
8. Spadix longer than spathe...................................................................................................................................................................9
- Spadix as long as or shorter than spathe...........................................................................................................................................12
9. Spathe limb corrugated.....................................................................................................................................................................10
- Not as above .....................................................................................................................................................................................11
10. Staminodes folded 180 o apically .............................................................................................................................. T. phuocbinhense
- Staminodes straight up to parallel to axis...................................................................................................................... T. corrugatum
11. Male zone cylindrical, staminodes cylindrical to conical ........................................................................................ T. khonkaenensis
- Male zone subglobose, staminodes clavate ..................................................................................................................... T. acetocella
12. Leaves entire....................................................................................................................................................................... T. laoticum
- Leaves incompletely trifoliolate .......................................................................................................................................................13
13. Stigma funnel shaped and lobed............................................................................................................................. T. stigmatilobatum
- Stigma disciform and unlobed............................................................................................................................................... T. huense
14. Spathe limb very strongly circinnately recoiled over the entire length......................................................................... T. circinnatum
- Not as above .....................................................................................................................................................................................15
15. Staminodes <3 mm long..................................................................................................................................................................16
- Staminodes> 5 mm long..................................................................................................................................................................17
16. Spathe 14–30 cm long, thecae opening by small pores....................................................................................................... T. hayatae
- Spathe 4.5–5.0 cm long, thecae opening by elongate slits .............................................................................. T. vietnamense sp. nov.
17. Staminodes subulate .............................................................................................................................................................. T. blumei
- Staminodes filiform..........................................................................................................................................................................18
18. Staminodes curly ............................................................................................................................................................. T. trilobatum
- Staminodes not curly .................................................................................................................................................... T. penicillatum
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Scientific name authorship
- Schott
- Kingdom
- Plantae
- Phylum
- Tracheophyta
- Order
- Alismatales
- Family
- Araceae
- Genus
- Typhonium
- Taxon rank
- genus
- Taxonomic concept label
- Typhonium Schott, 1829 sec. Van, Le, Nguyen-Phi, Nguyen, Nguyen, Nguyen & Luu, 2021
References
- Van, H. T., Nguyen-Phi, N., Vu, N. L., Galloway, A. & Luu, H. T. (2017) Typhonium dongnaiense (Araceae), a new species from Vietnam. Annales Botanici Fennici 54: 405 - 408. https: // doi. org / 10.5735 / 085.054.0622