Anthericum Rouwenortii De Gorter, a species not occurring in the Index Kewensis, was described by De Gorter in his Catalogus Plantarum Horti Ulenpassiani, 1783, p. 51 and 52 as follows: p. 51 : AUTHERICUM. 2. Rouwenortii. foliis planis carinatis, scapo ramoso, corollis patentibus. Tab. I. Habitat in Zeylona? Planta e seminibus e Zeylona, si bene meminit III. Baro De ROUWENOORT missis, ante multos annos enata colitur adhuc in Caldario Horti Uilenpassiani, ubi quotannis floret. Descriptio. Badix crassa, tuberosa, subtranslucida. Folia radicalia, ensiformia, carinata, glabra, sesquipedalia, extremitate subulata. p. 52: Scapus ramosus, fere tripedalis, ramis alternis, inferioribus brevioribus, superioribus longioribus. Bracteis lanceolato-subulatis bifidis. Fedunculis simplicibus. Flores magnitudine Antherici ramosi, albi, apicibus petalorum viridibus. Filamenta alba, laevia. Antherae flavae. staminibus longior. The Catalogus Plantarum Horti Ulenpassiani is a catalogue of plants cultivated in the gardens and greenhouses of Ulenpas, the estate of H.A.W. Baron van Rouwenoort and situated near Hummelo in the Netherlands’ province of Gelderland. It contains lists of plant-names and the only species of which a description and a plate are given is the above mentioned Anthericum Rouwenortii.