P. punctata var. punctata(シノニム: P. kirkiiHiern、P. kirkii var. hirtella (Oliv.) Verdc.、P. kirkii var. nairobiensis (Bremek.) Verdc.、P. kirkii var. tarambassica (Bremek.) Verdc.、P. kirkii var. volkensii (K.Schum.) Verdc.)- 若枝は無毛。ガボン、コンゴ民主共和国(旧ザイール)、スーダン、エチオピア、ソマリア、ルワンダ、タンザニア、マラウイ、ザンビア、ジンバブエ、モザンビーク、コモロにも見られる[10]。
P. punctata var. minor E.M.A.Petit - 若枝に微毛があり、葉は厚い。タンザニアにも見られる[10]。
P. punctata var. tenuis E.M.A.Petit - 若枝に微毛があり、葉は薄い。ケニアのみに見られる[10]。
^Lovett, J. & Clarke, G.P. (1998). Psychotria alsophila. The IUCN Red List of Threatened Species 1998: e.T35769A9956948. doi:10.2305/IUCN.UK.1998.RLTS.T35769A9956948.en Downloaded on 12 June 2019.
^Luke, W.R.Q., Musili, P., Barasa, J. & Mathenge, J. (2018). Psychotria crassipetala. The IUCN Red List of Threatened Species 2018: e.T32252A84419018. doi:10.2305/IUCN.UK.2018-2.RLTS.T32252A84419018.en Downloaded on 12 June 2019.
^Musili, P., Luke, W.R.Q., Barasa, J. & Mathenge, J. (2018). Psychotria petitii. The IUCN Red List of Threatened Species 2018: e.T32253A84419050. doi:10.2305/IUCN.UK.2018-2.RLTS.T32253A84419050.en Downloaded on 12 June 2019.
^Lovett, J. & Clarke, G.P. (1998). Psychotria pseudoplatyphylla. The IUCN Red List of Threatened Species 1998: e.T34457A9869836. doi:10.2305/IUCN.UK.1998.RLTS.T34457A9869836.en Downloaded on 12 June 2019.
^World Conservation Monitoring Centre (1998). Psychotria taitensis. The IUCN Red List of Threatened Species 1998: e.T32254A9691643. doi:10.2305/IUCN.UK.1998.RLTS.T32254A9691643.en Downloaded on 12 June 2019.
Davis, Aaron P.; Bridson, Diane; Jarvis, Charles; Govaerts, Rafaël (2001). “The typification and characterization of the genus Psychotria L. (Rubiaceae)”. Botanical Journal of the Linnean Society135 (1): 35–42. doi:10.1111/j.1095-8339.2001.tb02366.x.
Govaerts R. (ed). For a full list of reviewers see: http://apps.kew.org/wcsp/compilersReviewers.do (2019). WCSP: World Checklist of Selected Plant Families (version Aug 2017). In: Species 2000 & ITIS Catalogue of Life, 2019 Annual Checklist (Roskov Y., Ower G., Orrell T., Nicolson D., Bailly N., Kirk P.M., Bourgoin T., DeWalt R.E., Decock W., Nieukerken E. van, Zarucchi J., Penev L., eds.). Digital resource at http://www.catalogueoflife.org/annual-checklist/2019 Species 2000: Naturalis, Leiden, the Netherlands. ISSN2405-884X2019年6月19日閲覧。
Govaerts, R., Ruhsam, M., Andersson, L., Robbrecht, E., Bridson, D., Davis, A., Schanzer, I., Sonké, B. (2019). World Checklist of Rubiaceae. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://wcsp.science.kew.org/ Retrieved 25 June 2019
Linnaeus, Carolus (1759). Systema naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus II. Editio decima, reformata, p. 929. Impensis direct. Laurentii Salvii, Holmiae [Stockholm].