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| F–G. Dendrobium letocartiorum Munzinger & M.Pignal sp. nov. H. D. butinii M.Pignal & Munzinger sp. nov. I–J. D. unicarinatum Kores. Cult. Nouméa. K–L. D. crassifolium Schltr. M. D. camaridiorum Rchb.f.
in Pigna & Munzinger, 2020
F–L, images by Christian Laudereau; M image by Jérôme Munzinger.
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Abstract
Morphological characters support the description of two new species of Orchidaceae from New Caledonia: Dendrobium butinii M.Pignal & Munzinger sp. nov. and Dendrobium letocartiorum Munzinger & M.Pignal sp. nov. The lectotypes of Dendrobium camaridiorum Rchb.f. and D. crassifolium Schltr. are designated here. A leaf anatomical study was conducted and provided useful characters to distinguish the five New Caledonian graminoid Dendrobiineae species. Two identification tools are provided: an anatomical key for sterile material of grass-like Dendrobiineae and a morphological key for the New Caledonian graminoid Dendrobium. We propose preliminary conservation assessments with IUCN criteria for the new taxa.
Keywords. Orchidaceae, Grastidium, Dendrobium, Biloba, New Caledonia, taxonomy.
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| Fig. 1. A–E. Fruits. A. Dendrobium butinii M.Pignal & Munzinger sp. nov., loc. Colnett Mountain, Oua Ina or Wé Ina; image n°PA211592. B. D. unicarinatum Kores, cult. Nouméa (original data: Mandjélia Mount or Tidiélic Mount, 780 m); image n°PA118035. C–D. Dendrobium letocartiorum Munzinger & M.Pignal sp. nov., Mandjélia Mount or Tidiélic Mount, 780 m; image n°PA182815. D. Dehiscent fruit, cult. Nouméa (original data: mt Mandjélia or Tidiélic, 780 m); image n°PC061498. E. D. camaridiorum Rchb.f., Col des Roussettes, Bouirou; 5 Apr. 2015; image n°P4057147. F–N. Flowers. F–G. Dendrobium letocartiorum Munzinger & M.Pignal sp. nov., cult. Nouméa (original data: Mandjélia Mount or Tidiélic Mount, 780 m; 6 Dec. 2014); image n°PC061503. G. Cult. Nouméa; (original data: Mandjélia Mount or Tidiélic Mount, 780 m; 6 Dec. 2014); image n°PC061504. H. D. butinii M.Pignal & Munzinger sp. nov., Colnett Mount, Ouanebatch We Ina, 300 m; 20 Jan. 2018; image n°P1211262. I–J. D. unicarinatum Kores. I. Cult. Nouméa; 15 Nov. 2015; (original data: Roches de la Ouaieme, 800 m; 23 Oct. 2015); image n°PB157702. J. Teratological flower, cult. Nouméa; 30 Jul. 2015; (original data: Mandjélia Mount or Tidiélic Mount, 780 m; 25 Oct. 2014); image n°P7314192. K–L. D. crassifolium Schltr., cult. Nouméa; 27 Nov. 2015. K. Image n°PB270172. L. Image n°PB2700199. M–N. D. camaridiorum Rchb.f., Bopope, Piémont (versant sud) du Kantalupaik, M. Pignal et al. 5165. N. Cult. Nouméa; 13 Nov. 2014; image n°PB130988. O–Q, S–T. Habits. O. D. crassifolium Schltr., cult. Nouméa; before 1998; digitized analogue image s.n. P. D. unicarinatum Kores, Koghis Mountains, Bouo Mount, 680 m; 31 Aug. 2003; image n°P8311086. Q. D. camaridiorum Rchb.f., Vallée de la Tchamba; 15 Sep. 2003; image n°P9151456. S. D. butinii M.Pignal & Munzinger sp. nov., Vallée de la Amoa Vaawe; 26 Feb. 2016; image n°P2260576. T. D. letocartiorum Munzinger & M.Pignal sp. nov., Mandjélia Mount ou Tidiélic Mount, 780 m; 24 Oct. 2018; image n°111258. R. Leaf of D. camaridiorum Rchb.f., J. Munzinger et al. 6358.
A–L, N–S, T images by Christian Laudereau; M image by Jérôme Munzinger; R image by Peter P. Lowry.
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Marc Pigna and Jérôme Munzinger. 2020. Morphological and Anatomical Investigation of New Caledonian Graminoid Dendrobium (Orchidaceae) with the Description of Two New Species. European Journal of Taxonomy. 633: 1–26. DOI: 10.5852/ejt.2020.633
