Leucospermum tottum is indigenous to South Africa, where it grows on sandstone slopes at altitudes between 300 and 2000 meters, especially in the mountains of the southwestern Cape. It is part of the Cape Floral Kingdom, occurring only in the winter rainfall area. Pincushion proteas are popular cut flowers for floral arrangements because of their striking appearance and longevity.
The inflorescence consists of numerous bisexual zygomorphic flowers. Each individual flower is subtended by a bract and has a style, four stamens, and a cylindrical perianth. The perianth is longitudinally split by the lengthening style into a free lower segment with one stamen that becomes coiled after anthesis and an upper portion that is separated at the tip into three distinct lobes, each carrying a stamen. The sessile ovary at the base of the rigid style is too small to distinguish.
About the Species
About this Specimen
This specimen was scanned by Matthew Colbert on 04 April 2002 along its long axis for a total of 435 1024x1024 pixel slices. Each slice is 0.2188 mm thick, with an interslice spacing of 0.2188 mm and a field of reconstruction of 105 mm.
Stuppy, W. H., Maisano, J. A., Colbert, M. W., Rudall, P. J., and T. B. Rowe. 2003. Three-dimensional analysis of plant structure using high-resolution X-ray computed tomography. Trends in Plant Science 8:2-6.
Leucospermum on Museums Online South Africa