A new Amorphophallus (Araceae) species from Thailand and an updated key to the Longituberosus and Saraburiensis subclades
Author
Scholten, Justin
Department of Plant Biology, 516 Mann Library, Cornell University, Ithaca, New York 14853, United States of America.
Author
Livingston, David
3318 Ellington Ct., Ft. Myers, Florida 33916, United States of America.
Author
Sizemore, Mary
751 Deerfoot Rd., Deland, Florida 32720, United States of America.
text
Phytotaxa
2024
2024-01-05
633
2
101
107
https://phytotaxa.mapress.com/pt/article/download/phytotaxa.633.2.1/51414
journal article
10.11646/phytotaxa.633.2.1
1179-3163
10462290
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