Table 1. — Study sites and voucher information for species studied. Vouchers are housed at MO (GOLDBLATT) or at NBG (other collectors). All study sites in South Africa.

Species	Study site	Voucher
S. auriculata Goldblatt & J.C. Manning	Western Cape, Gifberg slopes	Goldblatt & Manning 10966
S. bulbifera (L.) Ker Gawl.	Western Cape, Darling	Kurzweil 1272
S. caryophyllacea Goldblatt	Western Cape, Nardouw Mts.	Goldblatt 10671
S. elegans (Sweet) Goldblatt	Northern Cape, Nieuwoudtville	Lewis 5909
S. fragrans (Jacq.) Ker Gawl.	Western Cape, Bot River	Goldblatt & Manning 10012
S. galeata Ker Gawl.	Western Cape, Vanrhyn’s Pass	Goldblatt 7234A
S. grandiflora (Delaroche) Ker Gawl. subsp. fimbriata (Lam.) Goldblatt	Western Cape, Cape Town	Goldblatt & Manning 9789
subsp. acutiloba Goldblatt	Western Cape, N of Citrusdal	Goldblatt & Manning 10368
S. maculosa Goldblatt	not studied
S. metelerkampiae (L. Bolus) Goldblatt & J.C. Manning	Western Cape, Pakhuis Pass	Goldblatt & Manning 10386
S. parviflora (G.J. Lewis) Goldblatt	Western Cape, Versveld Reserve, Darling	Goldblatt & Manning 10358
S. pillansii L. Bolus	Northern Cape, E of Nieuwoudtville	Goldblatt & Manning 10429
S. roxburghi (Baker) Goldblatt	Western Cape, N of Citrusdal	Goldblatt & Manning 10333
S. tricolor (Schneev.) Ker Gawl.	Northern Cape, Grasberg road,	Goldblatt & Manning 10341
	NW of Nieuwoudtville
S. villosa (Burm.f.) Goldblatt	Western Cape, near Malmesbury	Goldblatt & Manning 10338
	Western Cape, Darling Nature	Goldblatt s.n. (no voucher)
	Reserve
S. variegata (Sweet) Goldblatt	Western Cape, N of Clanwilliam	Goldblatt 10568