Geostachys aristata Skornick., Q. B. Nguyen & H. D. Tr
In: A revision of Geostachys (Zingiberaceae: Alpinioideae) in Cambodia, Laos and Vietnam, including a new species, G. aristata, pp. 245-260 in Phytotaxa 585(4) 250-254, 2023, S. 245-260
unknown
Zugriff:
Geostachys aristata Škorničk., Q.B.Nguyen & H.Đ.Tr ẫn, sp. nov. (Fig. 1, 3, 4) Diagnosis: —Similar to G. annamensis in the overall habit and erect inflorescences composed of 2–3-flowered cincinni of white flowers with labellum and stamen spotted with dark pink to red, but differs from the latter species by the green leaf sheaths and ligules (vs leaf sheaths with dark red reticulation and dark red ligules), most often longer petioles (5–30 mm vs 1–7 mm long), bracts and bracteoles greenish (vs white tinged pink) with prominently aristate (vs round) apices, calyx lobes prominently mucronate with mucros 2–5 mm long (vs calyx lobes blunt, with apices less than 1 mm long), labellum with crimson spots extending to the margin (vs with crimson spots and lines limited to the centre), and longer anther crest (5–6 mm vs 2–3 mm long). Type: — VIETNAM. Kon Tum province: Kon Plông district, Xã Hiḗu commune, 14°38’58.3”N 108°24’57.3”E, 1209 m, 24 April 2012, J. Leong-Škorničková, Q.B. Nguyễn, H.Đ. Trǻn & E. Záveská JLS-1561 (holotype SING: SING0197751! [including flowers preserved in spirit]; isotypes E [mounted over two sheets E00666509! & E00666510!], P [mounted over two sheets P00840190! & P00840191!], PR!, VNMN! [including flowers preserved in spirit]). Clump-forming herb up to 2 m tall. Rhizome supported up to 40 cm above the ground by stilt roots, sheathed by dry brown scales, internally cream white. Leafy shoots with 7–12 leaves per pseudostem, bladeless at basal 1/3; bladeless sheaths 4–6, most basal (outermost) sheaths very short, dry and brown, inner sheaths distally gradually longer, green, abaxially pubescent, with a prominent hyaline margin (more prominent in dry material); leaf sheaths green, pubescent abaxially along the centre, glabrescent towards margin, margin hyaline (more prominent in dry material), basally glabrous or nearly so, distally pubescent; ligule 2–6 mm long, apex round (rarely obscurely bilobed), green, glabrous at base, pubescent at margin (glabrescent with age); petiole ca. 5–30 ...
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Geostachys aristata Skornick., Q. B. Nguyen & H. D. Tr
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Autor/in / Beteiligte Person: | Leong-Škorničková, Jana ; Bình, Nguyén Qu ốc ; Đăng, Tr ần H ữu ; Trư ờng, Lưu H ồng ; Nuraliev, Maxim S. |
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Zeitschrift: | A revision of Geostachys (Zingiberaceae: Alpinioideae) in Cambodia, Laos and Vietnam, including a new species, G. aristata, pp. 245-260 in Phytotaxa 585(4) 250-254, 2023, S. 245-260 |
Veröffentlichung: | 2023 |
Medientyp: | unknown |
DOI: | 10.5281/zenodo.7706362 |
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