Tuesday, July 20, 2021

[Botany • 2021] Amomum fangdingii (Zingiberaceae) • A New Species from Guangxi, China [Taxonomic Studies on Amomum in China III]

Amomum fangdingii X.E.Ye, Škorničk. & N.H.Xia 

in Ye, Leong-Škorničková, Bai et Xia, 2021. 
A plant formerly misidentified as Amomum maximum in Guangxi, China, is described here as a new species, namely A. fangdingii. A detailed description, distribution map and illustrations are provided together with a taxonomic key distinguishing A. fangdingii from eight morphologically similar species characterised by cincinnate inflorescences occurring in Cambodia, China, Laos and Vietnam.

Keywords: Amomum maximum, A. velutinum, gingers, misidentification, Monocots. 

FIGURE 2. Amomum fangdingii X.E.Ye, Škorničk. & N.H.Xia 
(A) Habit, (B) Bladeless leaf sheaths with crisped margins, (C) Infructescence, (D) Dissection of a flower (from left to right): calyx (split open), corolla lobes, ovary with epigynous glands, style and pedicel, labellum, floral tube with stamen and two minute lateral staminodes (front view, side view & back view).
Photos by Ye Xing-Er; (A)-(C) based on X.E. Ye 160, (D) based on X.E. Ye 12.

FIGURE 1. Amomum fangdingii X.E.Ye, Škorničk. & N.H.Xia 
(A) Habit, (B) Leaves, (C) Ligule, (D) Rhizome with inflorescences, (E) Bladeless leaf sheaths with crisped margins, (F) Flower (front view), (G) Flower (side view), (H) A single inflorescence and dissection of a cincinnus (from left to right): cincinnus, bract, single flower, single flower bud, bracteole, (I) Infructescence.
Photos (A)-(H) by Ye Xing-Er; based on X.E. Ye 127. 
Photo (I) by Chen Juan; based on J.B. Ni & J. Chen 061008.

Amomum fangdingii X.E.Ye, Škorničk. & N.H.Xia sp. nov.

Xing-Er Ye, Jana Leong-Škorničková, Lin Bai and Nian-He Xia. 2021. Taxonomic Studies on Amomum (Zingiberaceae) in China III: Amomum fangdingii, A New Species from Guangxi. Phytotaxa. 490.3; 263–270. DOI: 10.11646/phytotaxa.490.3.4