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| Cornukaempferia argentifolia Boonma & Saensouk, |
Abstract
Cornukaempferia argentifolia, a new species of Zingiberaceae from northern Thailand, is described and illustrated along with photographs, notes on its distribution, ecology, and IUCN conservation status. An identification key to the species of Cornukaempferia Mood & K.Larsen in Thailand and a distribution map are also presented.
Keywords: Cornukaempferia kamolwaniae, Cornukaempferia larsenii, Endangered, Phitsanulok province.
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| Cornukaempferia argentifolia Boonma & Saensouk: a. Habit with flowers and underground parts; b. Front view of flower; c. Bract; d. Calyx; e. Dorsal corolla lobe; f. Lateral corolla lobes; g. Lateral staminodes; h. Labellum; i. Front and side view of anther; j. Ovary with epigynous glands (from T. Boonma 23; drawn by T. Boonma). |
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| Cornukaempferia argentifolia Boonma & Saensouk: a. Habit; b. Cross-section of rhizome; c. Flowers; (from T. Boonma 23; photos by T. Boonma). |
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| Cornukaempferia argentifolia Boonma & Saensouk: d. (from left to right) side view and front view of anther with calyx, (upper row) inner side of dorsal corolla lobe, lateral corolla lobes, lateral staminodes, and upper side of the labellum, (lower row) outer side of dorsal corolla lobe, lateral corolla lobes, lateral staminodes, lower side of the labellum, and bract (from T. Boonma 23; photo by T. Boonma). |
Cornukaempferia argentifolia Boonma & Saensouk, sp.nov.
Similar to Cornukaempferia larsenii P. Saensouk but differs by its leaves (adaxially silver without markings vs. green with few silvery markings adaxially), bracts (glabrous vs. sparsely hairy), corolla tube (finely hairy vs. glabrous), labellum (obovate with emarginate apex vs. campanuloid with rounded apex) and filaments (finely hairy vs. glabrous).
Habitat: Occurring at elevations of 420 meters above sea level, growing in sandy loam soil, moist and close to the watercourse in a deciduous forest.
Distribution: Hitherto endemic to northern Thailand (Fig. 3).
Etymology: The specific epithet “argentifolia” is derived from two Latin words, “argenti” meaning “silver” and “folia” meaning “leaves” and refers to its silvery leaves. เปราะทองใบเงิน
Piyaporn Saensouk, Surapon Saensouk and Thawatphong Boonma. 2021. Cornukaempferia argentifolia (Zingiberaceae), A New Species from Northern Thailand. Rheedea. 31(4); DOI: 10.22244/rheedea.2021.31.04.03
