In the last few decades, Lampranthus tenuifolius has lost most of its natural habitat and over 80% of its subpopulations, to farming and the urban sprawl of Cape Town. It is currently classified as Critically Endangered by the IUCN
Two tiny and fragmented patches of this plant remain, totalling roughly 100 plants. This tiny population is still decreasing - now mainly due to invasive alien plants and coastal developments.[4]
AFPD. 2008. African Flowering Plants Database - Base de Donnees des Plantes a Fleurs D'Afrique.
Gibbs Russell, G. E., W. G. Welman, E. Reitief, K. L. Immelman, G. Germishuizen, B. J. Pienaar, M. v. Wyk & A. Nicholas. 1987. List of species of southern African plants. Mem. Bot. Surv. S. Africa 2(1–2): 1–152(pt. 1), 1–270(pt. 2).