Amomum carnosum V.P. Thomas & M. Sabu, 2012

Ding, Hong-Bo, Yang, Bin, Maw, Mya Bhone, Win, Pyae Pyae & Tan, Yun-Hong, 2020, Taxonomic studies on Amomum Roxburgh s. l. (Zingiberaceae) in Myanmar II: one new species and five new records for the flora of Myanmar, PhytoKeys 138, pp. 139-153 : 139

Amomum carnosum V.P. Thomas & M. Sabu Fig. 3

Amomum carnosum V.P. Thomas & M. Sabu in Kew Bull. 67: 549. 2012; De Boer et al. in Taxon 67(1): 19. 2018. Type: India, Nagaland, Tuensang Distr., Noklak, 20 May 2007, Thomas & Muhammed Nissar 103698 (holotype: CALI).

Specimens examined.

MYANMAR, Kachin state, Putao district, Upper Shankhaung to Wasandum, understory herbs in tropical rain forest, 27°27'15"N, 97°14'50"E, 1007 m elev., 17 June 2018, Myanmar Exped. M4626 (HITBC!; RAF!).

Distribution.

India, Myanmar.

Note.

Amomum carnosum was first described by Thomas et al. (2012) and recorded as endemic to Nagaland, India. The species is similar to A. maximum ( Roxburgh 1810: 344) in having a bifid membranous ligule, white flowers, but differs in its diffuse, low stoloniferous herb, 30-45 cm tall, leaves 2-3 per shoot, 3-lobed labellum, lamina elliptic and glabrous. In our collection from Myanmar, Myanmar Exped. M4626 matches well with Thomas’s type in its morphological structure ( Thomas et al. 2012). However, it differs in the slightly floral structure and having non-3-lobed labellum. Considering the floral structure of Amomum s.l. is easy to tear and corrupt in the rainy season, we consider that the accurate description of Amomum carnosum requires further observation and collection of field individuals.

Figures

Figure 3. Amomum carnosum V. P. Thomas & M. Sabu A habit B single leaf (back view) C leaf blade abaxially D ligule E rhizome F basal part of plant showing inflorescences G single flower (side view) H single flower (back view) I single flower (front view) J calyx K dorsal corolla lobe L lateral corolla lobes M floral tube N labellum O stamen with lateral staminodes (front view) P stamen with lateral staminodes (back view) Q ovary with epigynous glands R style and stigma S young fruit with peduncle T cross section of fruit. Photographed by H. B. Ding.