Nerine undulata
{{Short description|Species of flowering plant}}
{{Speciesbox
| image = Nerine undulata 03.jpg
| taxon = Nerine undulata
| authority = (L.) Herb.,{{cite web | url = http://www.theplantlist.org/tpl1.1/record/kew-282151
| title = Nerine undulata | publisher= The Plant List | access-date=12 April 2018}}{{cite web
| url= http://www.ipni.org/ipni/idPlantNameSearch.do?id=66348-1&back_page=%2Fipni%2FeditSimplePlantNameSearch.do%3Ffind_wholeName%3DNerine%2Bundulata%26output_format%3Dnormal | title = Nerine undulata | publisher = International Plant Names Index | access-date = 12 April 2018}} 1820}}
Nerine undulata syn. N. crispa is a species of flowering plant in the subfamily Amaryllidoideae of the family Amaryllidaceae, that is native to the eastern Cape of South Africa.{{cite book | editor-last = Brickell | editor-first = Christopher | title = The Royal Horticultural Society A-Z Encyclopedia of Garden Plants | year = 2008 | page = 723 | publisher = Dorling Kindersley | location = United Kingdom | isbn = 9781405332965}} Growing to {{convert| 45|cm|in|abbr=on}} tall, it is a bulbous perennial with narrow grasslike leaves that are almost evergreen,{{cite web | url = https://www.pacificbulbsociety.org/pbswiki/index.php/NerineSpeciesThree | title = Nerine Species Three | publisher = Pacific Bulb Society | access-date = 12 April 2018}} and umbels of 8-12 slender, crinkled pale pink or mid-pink flowers 5 cm across in autumn.
The Latin specific epithet undulata means "wavy, undulating", in reference to the crinkled tepals of the flowers.{{cite book |last=Harrison |first=Lorraine |title=RHS Latin for Gardeners |year=2012 |publisher=Mitchell Beazley |location=United Kingdom |isbn=978-1845337315 }}
A white-flowered cultivar, N. undulata (Flexuosa Group) 'Alba', has been given the Royal Horticultural Society's Award of Garden Merit.{{cite web | url = https://www.rhs.org.uk/Plants/280920/i-Nerine-undulata-i-(Flexuosa-Group)-Alba/Details | title = RHS Plantfinder - Nerine undulata (Flexuosa Group) 'Alba' | access-date=4 April 2018}}{{cite web
| url= https://www.rhs.org.uk/plants/pdfs/agm-lists/agm-ornamentals.pdf | title = AGM Plants - Ornamental | date = July 2017
| page = 67 | publisher = Royal Horticultural Society | access-date = 12 April 2018}} It is hardy in mild or coastal areas of the UK, but requires a sunny, sheltered spot.