HELICHRYSUM formosissimum (Engl.) Mesfin var. guilelmi [family COMPOSITAE], in Comp. Newsl. 22: 14 (1992), as ' guilelmii '; Mesfin & T. Reilly in D.J.N. Hind et al. (eds), Adv. Comp. Syst.: 413 (1995). Type: Tanzania, Kilimanjaro, above Kiboscho, Volkens 1556 (B†, holo., K!, iso.)
HELICHRYSUM guilelmi Engl. [family COMPOSITAE], in Hochgebirgsfl. Trop. Afr.: 426 (1892); Hook. in Bot. Mag. 127: t. 7789 (1901); Moeser in E.J. 44: 329 (1910); A.V.P.: 215, 347 (1957); Maquet in Troupin, Fl. Rwanda 3: 604 (1985); Lisowski in F.A.C. Compositae, Inuleae: 159, t. 35/a-e (1989); U.K.W.F. ed. 2: 212 (1994); K.T.S.L.: 558 (1994). Syntypes: Tanzania, Kilimanjaro, Marangu–Machame [Madschame], Kersten 131 (B†, syn.) and Meyer 320 (B†, syn.); Kilimanjaro, above Kiboscho, Volkens 1556 (B†, K!, syn.)
HELICHRYSUM lentii Volkens & O. Hoffm. [family COMPOSITAE], in P.O.A. C: 410 (1895); Moeser in E.J. 44: 329 (1910). Type: Tanzania, Kilimanjaro, Volkens 1147 (B†, holo., BM!, BR!, K!, iso.)
HELICHRYSUM wollastonii S. Moore [family COMPOSITAE], in J.L.S. 38: 260 (1908). Type: Uganda, Ruwenzori, Wollaston s.n. (BM!, holo.)
HELICHRYSUM delhayei De Wild. [family COMPOSITAE], Pl. Bequaert. 5: 48 (1929). Type: Congo (Kinshasa), Nyiragongo, Delhaye s.n. (BR!, lecto.)
HELICHRYSUM glabrimucronatum De Wild. [family COMPOSITAE], Pl. Bequaert. 5: 55 (1929). Type: Tanzania, Kilimanjaro, Janssens s.n. (BR!, holo.)