A Guide to the Vegetation of Britain and Europe

Grey-Wilson, C.; Polunin, Oleg; Walters, Martin

doi:10.2307/4109953

Cited by 2 publications

(5 citation statements)

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“…It should also be emphasized that, inhabiting elevations up to 5800 m [41], I. thoroldii is the highest-elevation species in the genus Iris and possibly in Iridaceae. In this regard, it may be of interest as a potential source of physiologically active substances.…”

Section: Discussionmentioning

confidence: 99%

“…Illustrations of I. thoroldii: [2] (p. 160), [12], [14] (t. 6), [15] (t. 87), [16] (f. 19), [22] (t. 326), [25] (f. 1B), [40] (t. 46, f. 2-3), [41] (p. 536, f. 2-3), [45] (p. 75), [66] (f. 487), [67] (f. 358), [69] (t. 607), [70] (t. 122).…”

Section: Taxonomic Treatmentmentioning

confidence: 99%

“…To the best of my knowledge, it is the Iris species found at the highest elevation. Iris thoroldii is found at elevations ranging from 3200 to 5400 m, or even up to 5800 m [41] (p. 537), above sea level and is adapted to a variety of environmental stresses such as extreme temperatures, drought, high winds, high UV radiation, and paucity of soil nutrients. There is every reason to consider it one of the extremely cold-hardy species in I. subgen.…”

Section: Notes On the Distribution And Habitatmentioning

confidence: 99%

“…ionantha Y.T.Zhao (Figure 3) for purple-flowered plants. After Zha [20], I. thoroldii has most often been treated as a synonym of I. potaninii [2,3,[22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39] and th Tibetan plants cited under the name I. potaninii [32,33,[40][41][42][43][44][45][46]. Crespo et al [25] raised I. potaninii var.…”

Section: Introductionmentioning

confidence: 99%

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Taxonomic Reinstatement of the Endemic Chinese Species Iris thoroldii (Iridaceae) from I. potaninii and Reassessment of I. zhaoana

Boltenkov

2023

Plants

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Iris thoroldii is a perennial herbaceous plant with yellow, blue, or purple flowers. The species is native to the Tibetan Plateau and adjacent areas. In the literature and databases, I. thoroldii has long been treated in synonymy with I. potaninii. Currently, yellow-flowered plants of I. thoroldii are considered I. potanii, and blue-flowered plants are considered I. zhaoana, a replacement name for I. potaninii var. ionantha. This study aimed to clarify the taxonomic identity of I. thoroldii. A critical examination of original material, herbarium specimens, images of living plants, and the literature has shown I. thoroldii to be different from I. potaninii in some previously neglected macromorphological traits and to be conspecific with I. zhaoana. Thus, I. thoroldii is removed here from the synonymy of I. potaninii and accepted as a distinct species. This is endemic to China (central Gansu, Qinghai, and northwestern Sichuan provinces, and also Xinjiang Uygur and Tibet autonomous regions) and reaches the highest elevations compared with all other species in the genus Iris s.l. A revised taxonomy of I. thoroldii is provided, and two color forms, often co-occurring, are accepted: the autonymic yellow-flowered form (including a new synonym I. tigridia var. flavescens for which a lectotype was designated) and a form with blue or purple colors is proposed here, I. thoroldii f. ionantha. In addition, images of type specimens and detailed photographs of living plants for easy identification, along with the list of specimens of I. thoroldii that were examined, and also, comments on its distribution and habitats are provided.

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Section: Discussionmentioning

confidence: 99%

Section: Taxonomic Treatmentmentioning

confidence: 99%

Section: Notes On the Distribution And Habitatmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Taxonomic Reinstatement of the Endemic Chinese Species Iris thoroldii (Iridaceae) from I. potaninii and Reassessment of I. zhaoana

Boltenkov

2023

Plants

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“…Several classi cations of coasts were attempted worldwide; they are often partial although some are intended to be general. Many of these (Augier, 1982;Polunin and Walters, 1985;Bissardon et al, 1997;etc. ) have been compiled as part of the European Corine Biotope Programme.…”

Section: Introductionmentioning

confidence: 99%

Morphodynamic Classification of Morocco's Steep Coasts using multivariate methods and remote data

Farhaoui,

Dakki,

Saloui

2024

Preprint

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The Moroccan coastline extends for 2,130,80 km on the East Atlantic an Western Mediterranean coasts. It shows a high diversity of estuaries, bays, beaches and steep coasts. Despite its ecological, economic, and recreational importance, Morocco does not have a comprehensive inventory of its coastal landscapes. This study attempts to develop a primary classification of Moroccan steep coasts, based on a descriptive inventory of these landscapes, using 12 morphodynamic criteria that we mainly measured on satellite images. To achieve the said classification, we organized the steep coasts and the criteria in a binary matrix, which we treated with the hierarchical ascending classification method (CAH) and Factorial Correspondence Analysis. The results of this treatment provides a clustering scheme where we distinguish six different groups of cliffs, each of them being subdivided to 2 or 3 subgroups. Three categories of criteria appear as determinant in this classification: morphometric (length, area, and elevation), geologic (dominant rock and geologic eras), hydrodynamic (swells), and aerodynamic (wind). However, the two first criteria have the most significant influence on the classification. This classification, mainly based on satellite data, remains preliminary and requires improvements such using some field data. Finally, the raw and compiled data collected in this study constitute database composed of 175 cliffs, described using parametric criteria; this database is a contribution to the national wetlands inventory and is essential to promoting their conservation as well as management.

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A Guide to the Vegetation of Britain and Europe

Cited by 2 publications

References 0 publications

Taxonomic Reinstatement of the Endemic Chinese Species Iris thoroldii (Iridaceae) from I. potaninii and Reassessment of I. zhaoana

Taxonomic Reinstatement of the Endemic Chinese Species Iris thoroldii (Iridaceae) from I. potaninii and Reassessment of I. zhaoana

Morphodynamic Classification of Morocco's Steep Coasts using multivariate methods and remote data

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