| urodinychidae sp. bioug12342-f07 | no rank | | species | | 2248215 |
| urodinychidae sp. bioug14232-b03 | no rank | | species | | 2248223 |
| urodinychidae sp. bioug19433-c05 | no rank | | species | | 2248228 |
| urodinychidae sp. bioug19485-e06 | no rank | | species | | 2248227 |
| urodinychidae sp. bioug20494-a07 | no rank | | species | | 2248226 |
| urodinychidae sp. bioug22201-c02 | no rank | | species | | 2248224 |
| urodinychidae sp. bioug23786-b04 | no rank | | species | | 2248220 |
| urodinychidae sp. bioug25361-e10 | no rank | | species | | 2447586 |
| urodinychidae sp. bioug25974-a01 | no rank | | species | | 2248213 |
| urodinychidae sp. bioug25974-a02 | no rank | | species | | 2248216 |
| urodinychidae sp. bioug25974-a03 | no rank | | species | | 2248225 |
| urodinychidae sp. bioug25974-a04 | no rank | | species | | 2248219 |
| urodinychidae sp. bioug25974-a05 | no rank | | species | | 2248222 |
| urodinychidae sp. bioug25974-a06 | no rank | | species | | 2248214 |
| urodinychidae sp. bioug25974-a08 | no rank | | species | | 2248218 |
| urodinychidae sp. bioug26427-f11 | no rank | | species | | 2248221 |
| urodinychidae sp. cj_1641_018_otokiki | no rank | | species | | 1939579 |
| urodinychidae sp. cj_1651_031_otokiki | no rank | | species | | 1939580 |
| urodinychidae sp. cj_1716_003_cube | no rank | | species | | 1939581 |
| urodinychidae sp. cj_2094_010_la_ceiba | no rank | | species | | 1939582 |
| urodon dasyphyllus | species | | species | | 1959032 |
| urolophus piperatus | species | | species | | 2010876 |
| uromyces beticola | species | | species | | 1963355 |
| uromyces durus | species | | species | | 1930693 |
| uromyces erythronii | species | | species | | 1930692 |
| uromyces euphorbiae | species | | species | | 1886494 |
| uromyces magnusii | species | | species | | 2042292 |
| uromyces orientalis | species | | species | | 2012722 |
| uromyces tenuicutis | species | | species | | 2012723 |
| uromyces wedeliae | species | | species | | 2012724 |
| uroobovella marginata | species | | species | | 2022328 |
| uropodidae sp. bioug23544-c02 | no rank | | species | | 2674686 |
| uropodidae sp. bioug23544-c03 | no rank | | species | | 2674687 |
| uropodidae sp. bioug24224-a03 | no rank | | species | | 2447587 |
| uropodidae sp. bioug24224-a05 | no rank | | species | | 2447588 |
| uropodidae sp. bioug26735-h08 | no rank | | species | | 2447589 |
| uropodidae sp. bioug26735-h09 | no rank | | species | | 2447590 |
| uropodidae sp. bioug32113-a11 | no rank | | species | | 2674688 |
| uropodidae sp. bioug32114-b12 | no rank | | species | | 2674691 |
| uropodidae sp. bioug32114-c01 | no rank | | species | | 2674692 |
| uropodidae sp. cj_1513_005_otokiki | no rank | | species | | 1939583 |
| uropodidae sp. cj_1515_012_otokiki | no rank | | species | | 1939584 |
| uropodidae sp. cj_1523_053_otokiki | no rank | | species | | 1939585 |
| uropodidae sp. cj_1678_002_otokiki | no rank | | species | | 1939586 |
| uropodidae sp. cj_1683_015_otokiki | no rank | | species | | 1939587 |
| uropygi sp. mcz iz-124689 | no rank | | species | | 1953739 |
| uropygi sp. mcz iz-98666 106363 | no rank | | species | | 1953731 |
| uropygi sp. mcz iz-98975 106215.2 | no rank | | species | | 1953740 |
| uropyia melli | species | | species | | 1857720 |
| urothoe grimaldii | species | | species | | 1920389 |
| ursid gammaherpesvirus 2 | species | | species | | 2495533 |
| usnea aurantiaca-parvula | species | | species | | 2006159 |
| usnea cladocarpa | species | | species | | 1665218 |
| ustilaginoidea virens nonsegmented virus 2 | species | | species | | 2305465 |
| ustilaginoidea virens rna virus 6 | species | | species | | 2005330 |
| ustilaginomycotina sp. clib 3031 | no rank | | species | | 1908436 |
| ute insulagemmae | species | | species | | 2034229 |
| utetes magnus | species | | species | | 1920878 |
| utetheisa nr. lotrix nibge mot-01501 | no rank | | species | | 1975772 |
| utetheisa nr. lotrix nibge mot-01502 | no rank | | species | | 1975773 |
| utetheisa nr. lotrix nibge mot-01503 | no rank | | species | | 1975774 |
| utetheisa nr. lotrix nibge mot-01504 | no rank | | species | | 1975775 |
| utetheisa pulchella nucleopolyhedrovirus | species | | species | | 2282519 |
| utricularia vulgaris subsp. macrorhiza | subspecies | | subspecies | | 2065968 |
| uukuniemi phlebovirus | species | | species | | 1933191 |
| uxmal virus | species | | species | | 2488578 |
| vaccinium alvarezii | species | | species | | 1633952 |
| vaccinium ambivalens | species | | species | | 1633953 |
| vaccinium amphoterum | species | | species | | 1633954 |
| vaccinium ampullaceum | species | | species | | 1633955 |
| vaccinium andersonii | species | | species | | 1633956 |
| vaccinium ardisioides | species | | species | | 1633924 |
| vaccinium auriculifolium | species | | species | | 1633925 |
| vaccinium benguetense | species | | species | | 1633926 |
| vaccinium berberidifolium | species | | species | | 1633957 |
| vaccinium boreale | species | | species | | 2065969 |
| vaccinium brachybotrys | species | | species | | 1633927 |
| vaccinium brevipedicellatum | species | | species | | 1633928 |
| vaccinium bulleyanum | species | | species | | 1633929 |
| vaccinium chaetothrix | species | | species | | 1633930 |
| vaccinium chamaebuxus | species | | species | | 1633931 |
| vaccinium coriaceum | species | | species | | 1633932 |
| 'vaccinium corymbosum' phytoplasma | species | | species | | 2036767 |
| 'vaccinium corymbosum' phytoplasma bbs-qb-seca | species | | species | | 2055231 |
| vaccinium cruentum | species | | species | | 1633933 |
| vaccinium cubense | species | | species | | 1633934 |
| vaccinium dendrocharis | species | | species | | 1633935 |
| vaccinium didymanthum | species | | species | | 1633936 |
| vaccinium duclouxii | species | | species | | 1633937 |
| vaccinium floridanum | species | | species | | 1633939 |
| vaccinium ingens | species | | species | | 1633940 |
| vaccinium iteophyllum | species | | species | | 1633941 |
| vaccinium kingdon-wardii | species | | species | | 1633942 |
| vaccinium latissimum | species | | species | | 1633959 |
| vaccinium leucanthum | species | | species | | 1633943 |
| vaccinium leucobotrys | species | | species | | 1633944 |
| vaccinium loranthifolium | species | | species | | 1633945 |
| vaccinium madagascariense | species | | species | | 1633946 |
| vaccinium miquelii | species | | species | | 1633960 |
| vaccinium moupinense | species | | species | | 1633947 |