Amomum tibeticum (T.L. Wu & S.J. Chen) X.E. Ye, L. Bai & N.H. Xia

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 tibeticum (T.L. Wu & S.J. Chen) X.E. Ye, L. Bai & N.H. Xia Fig. 4

Amomum tibeticum (T.L. Wu & S.J. Chen) X.E. Ye, L. Bai & N.H. Xia in Ye et al. Plant Syst. Evol. 304(9): 1174. 2018; - Hornstedtia tibetica T.L. Wu & S.J. Chen in Acta Phytotax. Sin. 16(3): 39. 1978; T.L. Wu & S.J. Chen, in T.L. Wu (ed.) Fl. Reipubl. Popularis Sin. 16(2): 136. 1981; T.L. Wu & K. Larsen, in C.Y. Wu & P.H. Raven (eds) Fl. China. 24: 358. 2000; - Hornstedtia arunachalensis S. Tripathi & V. Prakash, Nordic J. Bot. 19: 329. 1999. Lectotype (designated by Ye et al. 2018, pg. 1174): China. Xizang Province: Medog County, Beibeng Township (previously District), 810 m elev., 11 August 1974, Qingzang expedition 74-1913 (PE00075268).

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, 992 m elev., 17 June 2018, Myanmar Exped. M4630 (HITBC!; RAF!); Kachin state, Putao district, Shinsanku, 27°39'56.90"N, 97°53'28.81"E, 990 m elev., 10 June 2018, Myanmar Exped. M4288 (HITBC!; RAF!); Kachin state, Putao district, Naung Maung township, Khasanku village, 27°39'35"N, 97°37'21"E, 1024 m elev., 13 June 2018, Myanmar Exped. M4457 (HITBC!; RAF!).

Distribution.

China, India ( Ye et al. 2018), Myanmar.

Note.

This was originally described by Wu and Chen (1978) based on a collection from Medog County, Xizang (Tibet), China. It was placed in the genus Hornstedtia Retz., presumably due to the radical fusiform inflorescences covered with rigid involucral bracts enclosing oblong and smooth fruits, and pointed out that it was close to H. affinis Ridl. ( Wu and Chen 1981). But on the basis of morphological study of flowering material originating at the type locality, the species is a member of Amomum s.s. ( Ye et al. 2018).

Figures

Figure 4. Amomum tibeticum (T. L. Wu & S. J. Chen) X. E. Ye, L. Bai & N. H. Xia A habit B pseudostem C leaf blade abaxially D ligule E inflorescences (front view) F single flower showing stamen (back view) G inflorescence (inner view) H inflorescence (side view) I, J sterile bracts K bract L bracteole M calyx N dorsal corolla lobe O lateral corolla lobes P labellum Q stamen with lateral staminode (back view) R stamen with lateral staminode (front view) S floral tube with style T ovary U epigynous glands. Photographed by H. B. Ding.