APS_April 2023

WLP 1827 1827

WLP 1827 1827

2

United Kingdom, Scotland nited Kingdo , Scotland

Sorbus matsumurana (Makino) Koehne Sorbus matsu urana ( akino) Koehne

2

Sorbus meinichii (Lindeb. Ex C. Hartm.) Hedl. Sorbus microphylla Wenz. Sorbus meinichi ( indeb. Ex . Hart .) Hedl. Sorbus microphyl a Wenz.

CSOR 197 197

PI 635946 I 635946

Norway or ay

WLP 1850 WLP 1849 1849 LP 1850 WLP 1777 WLP 1840 WLP 1841 17 1840 1841 CSOR 205 WLP 1760 WLP 1761 WLP 2414 WLP 2415 WLP 1762 CSOR 205 LP 1760 LP 1761 LP 2414 LP 2415 LP 1762 NA 75158 CSOR 163 CSOR 135 NA 75158 CSOR 163 CSOR 135 WLP 1871 WLP 1879 CSOR 120 LP 1871 LP 1879 CSOR 120 CSOR 276 CSOR 274 CSOR 275 WLP 1842 NA 85596 CSOR 276 CSOR 274 CSOR 275 LP 1842 NA 85 96 WLP 1780 WLP 1828 WLP 1837 CSOR 201 WLP 1838 CSOR 203 1780 1828 1837 201 1838 203 WLP 1829 WLP 1839 WLP 1776 1829 1839 17 6 WLP 2338 LP 23 8 WLP 1763 LP 1763

WLP 1850 WLP 1849 1849 LP 1850 PI 652862 PI 635953 PI 635968 I 652862 I 635953 I 635968 PI 693301 PI 635882 PI 635886 WLP 2414 WLP 2415 PI 635887 PI 693 01 PI 6358 2 PI 6358 6 LP 2414 LP 2415 PI 6358 7 NA 75158 PI 635926 PI 635923 NA 75158 PI 635926 PI 635923 WLP 1871 WLP 1879 PI 635919 LP 1871 LP 1879 PI 635919 PI 635972 PI 635973 PI 635974 PI 635090 NA 85596 PI 635972 PI 635973 PI 635974 PI 635090 NA 85 96 PI 369324 WLP 1828 WLP 1837 PI 635949 WLP 1838 PI 635951 I 369324 1828 1837 I 635949 1838 I 635951 WLP 1829 WLP 1839 PI 652861 1829 1839 I 652861 WLP 2338 LP 23 8 PI 635888 PI 6358

4

China hina

4

United States, Washington nited States, Washington

S orbus

115

Canada, Manitoba anada, Manitoba

Sorbus minima (Ley) Hedl. Sorbus mini a ( ey) Hedl.

3

United States, Washington United States, Washington nited States, Washington nited States, Washington

3

Sorbus randaiensis (Hayata) Koidz. Sorbus reflexipetala Koehne Sorbus roopiana Bordz. Sorbus sambucifolia (Cham. & Schltdl.) M. Roem. Sorbus randaiensis ( ayata) oidz. Sorbus reflexipetala Koehne Sorbus ro piana Bordz. Sorbus sa bucifolia ( ha . Schltdl.) M. Roe .

Taiwan ai an

Uzbekistan, Tashkent zbekistan, Tashkent

Armenia r enia

2

United States, Alaska nited States, Alaska

2

United States, Alaska United States, Alaska nited States, Alaska nited States, Alaska

Russian Federation, Habarovskij kraj us ian Federation, Habarovskij kraj

Japan, Hokkaidô Japan, Hokkaidô Japan, Hok aidô Japan, Hok aidô

Sorbus sambucifolia (Cham. & Schltdl.) M. Roem. var. pseudogracilis C. K. Schneid. Sorbus scalaris Koehne Sorbus scopulina Greene Sorbus sambucifolia (Cha . Schltdl.) M. Roe . var. pseudogracilis C. K. Schneid. Sorbus scalaris Koehne Sorbus scopulina Gre ne

China

China

United States, Wyoming United States, Oregon United States, Wyo ing United States, Oregon United States, Utah United States, Utah United States, Oregon United States, Utah United States, Utah United States, Oregon

Sorbus scopulina Greene var. cascadensis (G. N. Jones) C. L. Hitchc. Sorbus scopulina Gre ne var. cascadensis (G. N. Jones) C. L. Hitchc. Sorbus scopulina var. cascadensis Sorbus sitchensis M. Roem. var. grayi (Wenz.) C. L. Hitchc. Sorbus scopulina var. cascadensis Sorbus sitchensis M. Roe . var. grayi (Wenz.) C. L. Hitchc. Sorbus tianschanica Rupr. Sorbus wilsoniana C. K. Schneid. Sorbus tianschanica Rupr. Sorbus wilsoniana C. K. Schneid. Sorbus sp. Sorbus sp.

United States United States

United States, Oregon United States, Oregon

China

China

Canada, Manitoba Canada, Manitoba

2

United States United States

2

China, Sichuan Sheng China, Sichuan Sheng

China

China

2,3

Uzbekistan, Tashkent Uzbekistan, Tashkent

Torminalis glaberrima (Gand.) Sennikov & Kurtto Torminalis glaber ima (Gand.) Sen ikov & Kurt o

Sorbus torminalis Sorbus torminalis

2,3

Ukraine, Cherkasy Ukraine, Cherkasy

Ukraine, Kiev Ukraine, Kiev Ukraine, Kiev Ukraine, Kiev

Ukraine, Vinnytsya Ukraine, Vin ytsya

Ukraine z Local numbers are assigned at individual repositories for in-house identification. y Ploidy for species as reported in Nelson-Jones et al. ,2002; Aldasoro et al., 20 Robertson et al., 2010; Pellicer et al. ,2012; Li et al., 2017; Leitch et al., 2019. x Origin/Source column provides information directly from GRIN-Global. Ukraine z Local numbers are as igned at individual repositories for in-house identification. y Ploidy for species as reported in Nelson-Jones et al. ,20 2; Aldasoro et al., 20 Robertson et al., 2010; Pel icer et al. ,2012; Li et al., 2017; Leitch et al., 2019. x Origin/Source column provides information directly fro GRIN-Global. z Local numbe s are assigne at individual epositories for in-house identification. y Ploidy for species as reported in Nelson-Jones et al. ,2002; Aldasoro et al., 2004; R bertson et al., 2010; Pellicer et al., 2012; Li et al., 2017; Leitch et al., 2019. x Origin/Source column provides information directly from GRIN-Global.

Collections at US National Arboretum Woody Landscape Plant Germplasm Repository The USNA WLPGR collection of Sor bus s.l. includes 85 accessions representing 35 taxa within four genera and two interge neric hybrids (Tables 1 and 2). Representa tion by genus includes Aria (three species), Micromeles (four species), Sorbus s.s. (17 species, two subspecies, three varieties), and Torminalis (one species). The intergeneric hybrids × Tormaria latifolia ( Aria × Tormi nalis ) and × Tormariosorbus intermedia ( Aria

× Sorbus × Torminalis ) are also represented with multiple accessions. A subset of Aria , Micromeles , and Tormi nalis are maintained as living plants (13 in dividuals representing 10 accessions) within the USNA WLPGR living collections and research orchards. These simple-leaved gen era have fared better in the Washington, DC, climate, which better approximates the heat and humidity for several of these east Asian taxa, particularly Micromeles alnifolia . Con versely, the compound-leaved Sorbus s.s . that are more cold adapted have historically