Pyrrorhiza
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Ordo: Commelinales
Familia: Haemodoraceae
Name
Pyrrorhiza Maguire & Wurdack, Mem. New York Bot. Gard. 9(3): 318. 1957. – Wikispecies link – Pensoft Profile
Type species
Pyrrorhiza neblinae Maguire & Wurdack.
Comments
Pyrrorhiza was initially considered as being closely related to Schiekia Meisn. (Maguire and Wurdack 1957[1]), a view supported by the morphological phylogeny of Simpson (1990)[2], but not supported by the anatomical studies of Aerne-Hains and Simpson (2017)[3], the molecular phylogeny of Hopper et al. (in prep.)[4] and the new morphological phylogeny for the family (Pellegrini 2019[5]). As currently understood, Pyrrorhiza is sister to Cubanicula, with both being sister to Xiphidium s.str. (Hopper et al. in prep.[4]). The supposed relation between Pyrrorhiza and Schiekia was thought to be supported by the zygomorphic perianth, dimorphic stamens, and the discontinuous subexterior exine wall (Simpson 1983[6], 1990[2]). However, the first two characters are clearly homoplastic in Haemodoroideae, while the third seems to be a convergence between Pyrrorhiza and Schiekia (Pellegrini 2019[5]). Pyrrorhiza shares with Cubanicula and Xiphidium s.str. the sand-binding roots, campanulate and pollen rewarding flowers, mainly white perianth, tepals with an apical black mucron, anthers as long as to ca. ½ times shorter than the filaments and enlarged placental attachments subtending the ovules and fruits with thickened septal ridges (Pellegrini 2019[5]). It shares exclusively with Cubanicula the peculiar lenticellate seeds with the testa’s margin covered with coarse trichomes (Hickman 2019[7]; Pellegrini 2019[5]).
Taxon Treatment
- Pellegrini, M; Hickman, E; Guttiérrez, J; Smith, R; Hopper, S; 2020: Revisiting the taxonomy of the Neotropical Haemodoraceae (Commelinales) PhytoKeys, 169: 1-59. doi
Images
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Other References
- ↑ Maguire B, Wurdack J (1957) The Botany of the Guayana Highland– Part II.Memoirs of the New York Botanical Garden9(3): 235–392.
- ↑ 2.0 2.1 Simpson M (1990) Phylogeny and classification of the Haemodoraceae.Annals of the Missouri Botanical Garden77(4): 722–784. [pl. XXI–XXIII.] https://doi.org/10.2307/2399670
- ↑ Aerne-Hains L, Simpson M (2017) Vegetative anatomy of the Haemodoraceae and its phylogenetic significance.International Journal of Plant Sciences178(2): 117–156. https://doi.org/10.1086/689199
- ↑ 4.0 4.1 Hopper S, Smith R, Chase M, Fay M, Gutiérrez J, Hickman E, Manning J, Pellegrini M, Rourke J, Simpson M (in prep.) Near-complete taxon sampling for Haemodoraceae phylogenetics helps resolve enigmatic relationships in and between the Americas, South Africa, and Australia.
- ↑ 5.0 5.1 5.2 5.3 Pellegrini M (2019) Systematics of Commelinales focusing on Neotropical lineages. PhD thesis. Universidade de São Paulo, São Paulo, SP, Brazil.
- ↑ Simpson M (1983) Pollen ultrastructure of the Haemodoraceae and its taxonomic significance.Grana22(2): 79–103. https://doi.org/10.1080/00173138309431969
- ↑ Hickman E (2019) Discovery through illustration – botanical art, traits and their phylogeny in the Haemodoraceae. PhD thesis, The University of Western Australia.
