Rosa tomurensis, a new species of Rosa (Rosaceae) from China Author Deng, Tong 0000-0003-4707-4333 Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Engineering Research Center of Landscape Environment of Ministry of Education, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, School of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China & dt _ ton 118 @ 163. com; https: // orcid. org / 0000 - 0003 - 4707 - 4333 Author Luo, Le 0000-0002-8143-1931 Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Engineering Research Center of Landscape Environment of Ministry of Education, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, School of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China & luolebjfu @ 163. com; https: // orcid. org / 0000 - 0002 - 8143 - 1931 Author Yu, Chao 0000-0002-8096-5333 Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Engineering Research Center of Landscape Environment of Ministry of Education, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, School of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China & yuchao @ bjfu. edu. cn; https: // orcid. org / 0000 - 0002 - 8096 - 5333 yuchao@bjfu.edu.cn Author Zhang, Qi-Xiang 0000-0001-5690-0065 Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Engineering Research Center of Landscape Environment of Ministry of Education, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, School of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China & zqxbjfu @ 126. com; https: // orcid. org / 0000 - 0001 - 5690 - 0065 Author Liu, Xue-Sen 0000-0002-0240-2551 Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Engineering Research Center of Landscape Environment of Ministry of Education, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, School of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China & 2538059065 @ qq. com; https: // orcid. org / 0000 - 0002 - 0240 - 2551 2538059065@qq.com Author Deng, Ze-Yi 0000-0002-6355-0283 Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Engineering Research Center of Landscape Environment of Ministry of Education, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, School of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China & dzybfu 1999 @ 163. com; https: // orcid. org / 0000 - 0002 - 6355 - 0283 text Phytotaxa 2022 2022-08-04 556 2 169 177 http://dx.doi.org/10.11646/phytotaxa.556.2.6 journal article 116163 10.11646/phytotaxa.556.2.6 02247731-fbe5-430e-a9d0-8312ea59eb36 1179-3163 6965990

TABLE 2. Differences in morphological characteristics between R. tomurensis and R. laxa.

		R. tomurensis	R. laxa
Prickle	Quantity Prickle length	Rare 0.6–1.6 cm	More than R. tomurensis 0.3–1.4 cm
	Apex morphology	Bending is not significant	Usually bend down
Leaflet	Margin	Subbase 1/3 often entire	Serrated margin, few subbase 1/4 entire
	Growth way	Often solitary, sometimes 2–3 in corymbose cymes	Often 3–6 in corymb, sometimes solitary
	Single flower diameter	(3)3.5–6.5(7) cm in diam	2.5–3.5(4) cm in diam
Flower	Receptacle color	Purplish red, occasionally green	Green
	Pedicel length	1.5–3.5 cm	1–1.6 cm
	Pedicel color	Purplish red or green	Green
	Sepal color	Purplish red or green	Green
	Size	1–2.1 cm in diam	1–1.8 cm in diam
Hip	morphology Hip pedicel length	Subglobose or ovoid, apex without a short neck 1.5–3.5 cm	Oblong or ovoid, apex with a short neck 1–1.6 cm
	Hip pedicel morphology	Slightly inflated at base, often pendulous	No inflating at base
Gland		sepals abaxially, receptacle and pedicel glandular or glandless together, the glands in the pedicel sometimes shed at anaphase.	No glands or only the receptacle and pedicel have glands, and sepals abaxially, receptacle and pedicel sometimes glandular together