The genomic data of <i>Ormosia semicastrata</i>.

<i>Ormosia semicastrata</i> is an evergreen tree, up to 19 m. The bark is white to dark grayish, and greenish brown to brown; lenticels are convex with irregular cracks. Branchlets pilose with grayish brown or yellowish hairs, or sometimes subglabrous. Leaves imparipinnate, 14 36 cm; petiole, rachis and petiolules pilose with appressed grayish-brown hairs, or glabrous; leaflets 3 9 ( 13), leathery to thickly leathery, oblong to ovate-oblong or oblong-obovate, elliptic, lanceolate, oblong-lanceolate to oblanceolate, 4.0 14.5 × 1.0 5.7 cm, glabrous on both surfaces, sometimes vernicose adaxially, sometimes glaucous or pilose along mid-vein abaxially, apex acute to acuminate, obtuse or retuse, base rounded, broadly cuneate to cuneate or somewhat obtuse. (GBIF) <br>The initial assemblies for <i>Ormosia semicastrata</i> were 1,511,766,959 bp. GenomeScope estimations using a k-mer size 21 revealed repeat contents of 63.4%, and heterozygosity rates of 2.05% for <i>O. semicastrata</i>. After incorporating Hi-C data, the assembly sizes of <i>O. semicastrata</i> were refined to 1,510,687,319 bp. The assembly achieved 8 chromosome-level scaffolds, which accounted for 99.97% of the total in <i>O. semicastrata</i>. In <i>O. semicastrata</i>, the completeness score was 96.3% (89.6% complete and single-copy, 6.7% complete but duplicated), with 1.4% fragmented and 2.3% missing genes.

半荚红豆（Ormosia semicastrata）为常绿乔木，高可达19米。树皮呈白色至深灰色，绿褐色至褐色；皮孔（lenticels）凸起且具不规则裂纹。小枝被灰褐色或黄色柔毛，有时近无毛。叶为奇数羽状复叶，长14~36厘米；叶柄、叶轴及小叶柄被贴伏的灰褐色柔毛，或无毛；小叶3~9（~13）枚，革质至厚革质，形状为长圆形至卵形长圆形、倒卵状长圆形、椭圆形、披针形、长圆状披针形至倒披针形，大小为4.0~14.5 × 1.0~5.7厘米，两面无毛，有时叶面具光泽，有时叶背沿中脉具白粉或被毛，先端锐尖至渐尖、钝形或微凹，基部圆形、宽楔形至楔形或近钝形。（全球生物多样性信息设施（Global Biodiversity Information Facility, GBIF））
半荚红豆的初始基因组组装大小为1,511,766,959 碱基对（bp）。采用k聚体（k-mer）大小为21的GenomeScope分析显示，该物种的重复序列含量为63.4%，杂合率为2.05%。整合高通量染色体构象捕获（Hi-C）数据后，半荚红豆的基因组组装大小被优化至1,510,687,319 bp。该组装获得了8条染色体水平的支架序列（scaffold），占组装总序列的99.97%。该组装的完整度得分为96.3%（其中89.6%为完整单拷贝基因，6.7%为完整重复拷贝基因），1.4%为片段化基因，2.3%为缺失基因。