Pulvinatusia (Brassicaceae), a new cushion genus from China and its systematic position Author Chen, Hong-Liang CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China & Laboratory of Systematics & Evolutionary Botany and Biodiversity, College of Life Science, Zhejiang University, Hangzhou 310058, Zhejiang, China Author Al-Shehbaz, Ihsan A. Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, Missouri 63110, USA Author Qian, Li-Shen CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China & University of Chinese Academy of Sciences, Beijing 100049, China Author Zhang, Jian-Wen https://orcid.org/0000-0002-4735-168X CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China Author Xu, Bo College of Forestry, Southwest Forestry University, Kunming 650224, Yunnan, China Author Zhang, Ti-Cao College of Chinese Material Medica, Yunnan University of Chinese Medicine, Kunming 650500, Yunnan, China Author Yue, Ji-Pei CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China Author Sun, Hang CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China hsun@mail.kib.ac.cn text PhytoKeys 2022 2022-01-24 189 9 28 http://dx.doi.org/10.3897/phytokeys.189.77926 journal article http://dx.doi.org/10.3897/phytokeys.189.77926 1314-2003-189-9 46E8A84D60A0597193C1EAAA9BAB705B Pulvinatusia xuegulaensis J. P. Yue, H. L. Chen, Al-Shehbaz & H. Sun sp. nov. Fig. 2 Description. Herbs 0.9-1.6 cm tall; caudex many branched, to 4 mm in diam. Trichomes simple, to 0.6 mm long, mixed with fewer forked stalked ones. Leaves densely imbricate, (3.5-) 4.0-4.2 (-4.7) x 0.7-1 mm, thin, papery, long ciliate on both sides and margin. Flowers solitary on short pedicels originating from axils of basal leaves. Fruiting pedicels stout, 4.5-6 mm long, often hidden among basal leaves. Sepals oblong, 1-2 x ca. 1 mm. Petals whitish pink or pink; obovate to suborbicular, 3-3.5 x 2.5-3 mm, claw 2.5-3.4 mm long. Filaments 1.5-2 mm long; anthers 0.3-0.5 mm long. Ovules 2 or 3 per ovary. Fruit ovoid to ellipsoid, 1.6-1.9 x 0.8-1 mm; valves thick leathery, inflated, style 0.2-0.4 mm long. Seeds 1-1.5 x 0.7-0.9 mm, seed coat smooth, not mucilaginous when wetted; cotyledons accumbent. Type . China . Xizang : Xuegu La , alpine meadow, sandy area, 29°55' N , 90°7' E , 5300 m , 4 Aug. 2019 , ZBFC-510 ( holotype , KUN!; isotype, KUN!). Paratype . China . Xizang : Xuegu La , alpine gravel slopes, sandy area, 29°54' N , 90°7' E , 5407 m , 28 Aug. 2015 , ZJW3454 (KUN) .