Figure 1.
Thismiasumatrana from West Sumatra, Indonesia (from the holotype). A Flower B Dome-shaped mitre bearing the eaves-like to hood-like accessory lobes. The accessory lobes are indicated using the arrows C Upper part of perianth tube. Outer perianth lobes are indicated by arrows D Inner view of two pendulous stamens. Thecae and glands are indicated by upper and lower arrows, respectively E Outer view of a pendulous stamen. Thecae and glands are indicated by upper and lower arrows, respectively. One grid is equal to 1 mm2.
Summary[edit] Description: English: Gymnosiphon suaveolens. Species of plant. Date: 20 September 2020. Source: https://www.inaturalist.org/photos/96388208. Author: Eduardo Chacón-Madrigal. Camera location10° 03′ 02″ N, 84° 01′ 18″ WView all coordinates using: OpenStreetMap 10.050556; -84.021667. Image shared by iNaturalist user: eduardo_chacon Licensing[edit] : This file is licensed under the Creative CommonsAttribution 4.0 International license. :. You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. https://creativecommons.org/licenses/by/4.0 CC BY 4.0 Creative Commons Attribution 4.0 truetrue. : This image was originally posted to iNaturalist by eduardo_chacon at https://www.inaturalist.org/photos/96388208. It was reviewed on 11 October 2020 by INaturalistReviewBot and found to be published under the terms of the Cc-by-4.0 license.
Figure 2.
Thismiasumatrana from West Sumatra, Indonesia (Drawn from the holotype). A Flowering plant B Flower C Inner view of two pendulous stamens D Outer view of two pendulous stamens E Ovary with style and stigmas. Drawn by Kumi Hamasaki. Scale bars: 1 cm (A–B), 1 mm (C–E).
This small unusual plant normally remains hidden in he leaf litter but was exposed here by heavy rains washing down a steep bank. Thismia lack chlorophyll and depend on a mycorrhizal fungus for carbon and nutrient supply but in a parasitic way where the mycorrhizal fungi do not benefit in return.
Figure 1.Flower development in Thismia hongkongensis sp. nov. A, B Root system, with young flowering stalk developing (arrowed). C–H Developing flower, photographed over a 17-day period (10th, 14th, 16th, 19th, 23rd and 27th May, respectively) (S.S. Mar 1, HK). I, J Post-fertilization flower, showing abscission of perianth tube. Photos by S.S. Mar.
Summary[edit] Description: Illustration of Burmannia disticha. Date: between 1795 and 1819 date QS:P,+1500-00-00T00:00:00Z/6,P1319,+1795-00-00T00:00:00Z/9,P1326,+1819-00-00T00:00:00Z/9. Source: Plants of the coast of Coromandel vol. 3 plate 242 (http://www.botanicus.org/page/280403). Author: William Roxburgh (1751-1815), Joseph Banks (1743-1820), D. Mackenzie, George Nicol, W. Bulmer.
Figure 2.Flower structure in Thismia hongkongensis sp. nov. A Mature flower, showing outer tepals (ot), inner tepals (it) and abscission zone (ab) at the base of the perianth tube. B Entire plant (S.S. Mar 1, HK). C Perianth tube with annulus (a), following removal of the proximal face of the tube, exposing pendent stamens with filament (f), thecae (th), connective (c) and lateral appendage (la) (S.S. Mar 2, HK). D Inner face of perianth tube, showing network patterning and putative nectaries (arrowed) (S.S. Mar 2, HK). Scale bars: A, D = 2 mm; B = 5 mm; C = 1 mm. Photos: A, B S.S. Mar; C, D R.M.K. Saunders.
Figure 3.Fruit structure in Thismia hongkongensis sp. nov. A Flower (rear right), immature fruit, shortly after fertilization (left), and mature fruit with exposed seeds (front). B Two fruiting individuals, each with three fruits. C Lateral view of fruiting specimen, illustrating elongated fruit stalk. D Mature fruit with exposed seeds. E Dehydrated fruit. F Rehydrated fruit, after rainfall. Photos by S.S. Mar.
Figure 4.Thismia hongkongensis sp. nov. (S.S. Mar 2, HK). A Entire flower. B Flower with proximal part of perianth tube removed, showing pendent stamens. C Apex of the perianth tube, showing annulus (a) and pendent stamens, with filament (f), thecae (th), lateral appendage (la), and aperture (ap) between filaments. D Longitudinal section through fused carpels. Scale bars: A, B, D = 2 mm; C = 1 mm. Drawings by Caren Pearl Shin.