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| Amomum ampliflorum Y.H. Tan & H.B. Ding
in Ding, Zhou, Yang, Li, et al., 2019.
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Abstract
Two taxa of Amomum (Zingiberaceae), Amomum erythranthum and Amomum ampliflorum, from Putao, Kachin State of Northern Myanmar are described and illustrated as new to science. Amomum erythranthum is morphologically similar to A. subulatum and A. nimkeyense in having similar yellow flowers, but can be distinguished by its reddish floral tube, red anther connective, red and pubescent fruit. Amomum ampliflorum is similar to A. maximum, A. dealbatum and A. odontocarpum in white flower, but differs in its longer inflorescence and much larger flower. Two species, Amomum pauciflorum and Wurfbainia microcarpum are recorded for the flora of Myanmar for the first time. Data on ecology, phenology, distribution, conservation status, similarities to the related taxa, as well as colour photographs and line drawings of the type, and voucher specimens are provided for all reported taxa.
Keywords: Amomum, Myanmar, Taxonomy, new records, Zingiberaceae, Monocots
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| FIGURE 1. Amomum erythranthum. a. habit. b. leaf blade abaxially. c. ligule. d. basal part of plant showing inflorescences. e. flower. f. lateral staminodes. g. infructescence. h. single flower i. single flower (side view) exclude calyx and corolla lobes. j. fruit (side view). k. cross section of fruit. l. bracteole. m. calyx. n. central corolla lobe. o. lateral corolla lobes. p. labellum with floral tube and lateral staminodes. q. stamen with floral tube (back view). r. stamen with floral tube (front view). s. ovary with epigynous glands and style. Photographed by Y.H. Tan and H.B. Ding. |
Amomum erythranthum Y.H. Tan & H.B. Ding, sp. nov.
Amomum erythranthum is morphologically similar to A. subulatum and A. nimkeyense in having similar yellow flowers, but can be distinguished by its reddish floral tube, red anther connective, red and pubescent fruit.
Etymology:—The specific epithet ‘erythranthum’ refers to the red anther connective.
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| FIGURE 3. Amomum ampliflorum. a. habit. b. leaf blade adaxially. c. leaf blade abaxially. d. ligule. e. basal part of plant showing inflorescences. f. inflorescence. g. single inflorescence. h. infructescence (young fruit). i. flowers j. bract. k. bracteole. l. calyx with ovary and peduncular. m. central corolla lobe. n. lateral corolla lobes. o. labellum with calyx, ovary and peduncular. p. stamen (front view). q. stamen (back view). r. young fruit. s. cross section of young fruit. Photographed by Y.H. Tan. |
Amomum ampliflorum Y.H. Tan & H.B. Ding, sp. nov.
Amomum ampliflorum is similar to A. maximum, A. dealbatum and A. odontocarpum in white flower, but differs in its longer inflorescence and much larger flower
Etymology:— The specific epithet ‘ampliflorum’ indicates having a larger flower.
Hong-Bo Ding, Shi-Shun Zhou, Bin Yang, Ren Li, Mya Bhone Maw, Kyaw Win Maung and Yun-Hong Tan. 2019. Taxonomic Studies on Amomum Roxburgh s.l. (Zingiberaceae) in Myanmar Ⅰ: Two New Species and Two New Records for the Flora of Myanmar. Phytotaxa. 418(2); 158–170. DOI: 10.11646/phytotaxa.418.2.2
Two Ginger Species Reported New to Myanmar
