Abstract Onosma deltiphyllaAttar, Mirtadz. & Sotoodeh and O. humilis Attar, Sotoodeh & Mirtadz. (Boraginaceae) are described as new species from Iran. Morphologically the closest species to O. deltiphylla are O. microcarpa and O. sabalanica, while O. humilis is very distinct due to its very small size, and its closest relative is believed to be O. nana. Morphological traits distinguishing these species from the congeners include the shape of the leaves under the inflorescence and the size of the corolla.
Cite as: Attar F., Mirtadzadini M. & Sotoodeh A. (2023). Onosma deltiphylla and O. humilis (Boraginaceae), two new species from Iran. Ann. Bot. Fennici 60: 161–166. https://doi.org/10.5735/085.060.0125
Abstract: Two new species of Cousinia are described from Iran. Cousinia bornmulleriana from the west that can be placed in sect. Haussknechtii based on some key characters such as flower numbers, phyllary numbers and the inflorescence form traits. This species can be also compared with its closest relative C. haussknechtii. and C. karkasensis. The second new species, C. semnanensis, from North East of Iran, belongs to the sect. Stenocephalae for its flower numbers, winged stem, and phyllaries shape, and is compared to C. alexeenkoana and C. glaucopsis as its close relative.
A new species of the genus Potentilla L. (Rosaceae) from the Tehran province (Iran)
Potentilla alborzensis Faghir & Attar, sp. nov. (Rosaceae) is collected from steppe Mountains of Tang-e Washi, in the middle of Alborz Mountains for the first time. The new species is related to section Aureae (Rydb.) Juz. for its palmate radical leaves, having straight hairs and glandular trichomes; corymbiform inflorescence; hairy and glandular sepals; clavate and papillose style, shorter than or as long as matured ovary. Detailed micro- and macromorphological descriptions of the newly collected species, as well as photographs and distribution map are provided. In addition, comparison of diagnostic traits with allied species especially P. crantzii (Crantz) Beck ex Fritsch, P. adenophylla Boiss. & Hohenack., P. gelida C. A. Mey., P. geranioides Willd. and identification key are presented.