Amorphophallus (Scutandrium) Blume ex Decaisne 1834
Creators: name: Scholten, Justin
name: Livingston, David
name: Sizemore, Mary
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Alismatales
Araceae
Amorphophallus

description: Key to the species of the Longituberosus and Saraburiensis subclades of Amorphophallus subgen. Scutandrium
Species treated:
A. albispathus (Thailand)
A. bantae (Thailand)
A. coudercii (C. Vietnam, Cambodia)
A. longituberosus (NW Malaysia, Thailand)
A. saraburiensis (C. Thailand)
A. scutatus (C. Thailand)
A. tenuispadix (C. Thailand)
A. tenuistylis (C. Thailand)
1. Spadix distinctly longer than spathe; synandrodes present or not.....................................................................................................2.
– Spadix as long or shorter than spathe; synandrodes absent...............................................................................................................4.
2. Spathe base interior covered in fleshy, hair-like projections; synandrodes often absent ................................................ A. tenuistylis
– Spathe base interior verrucose; synandrodes always present ............................................................................................................3.
3. Styles short, 1–2 mm long......................................................................................................................................... A. saraburiensis
– Styles 3–4 mm long............................................................................................................................................................ A. scutatus
4. Appendix absent ............................................................................................................................................................... A. coudercii
– Appendix present...............................................................................................................................................................................5.
5. Appendix reddish-brown, less broad than staminate zone ................................................................................................... A. bantae
– Appendix white or beige, at least 1.25× as broad as staminate zone ................................................................................................6.
6. Staminate pores located at the periphery of thecae; spathe exterior often with vertical stripes............................... A. longituberosus
– Staminate pores located near the center of thecae; spathe exterior always without stripes ..............................................................7.
7. Ovaries 3–4-locular; peduncle and spathe without mottles........................................................................................... A. albispathus
– Ovaries unilocular; peduncle and/or spathe often mottled ............................................................................................ A. tenuispadix
description: Published as part of Scholten, Justin, Livingston, David & Sizemore, Mary, 2024, A new Amorphophallus (Araceae) species from Thailand and an updated key to the Longituberosus and Saraburiensis subclades, pp. 101-107 in Phytotaxa 633 (2) on pages 105-106, DOI: 10.11646/phytotaxa.633.2.1, http://zenodo.org/record/10462290