Koponen, T. Notes on Philonotis (Bartramiaceae, Musci). 15. Philonotis on Mt. Kilimanjaro, Tanzania

Arctoa (2015) 24: 382-388

doi: 10.15298/arctoa.24.31

Altogether ten species of Philonotis (Hedw.) Brid. have been recorded from Mt. Kilimanjaro, however only six of them are confirmed. The Kilimanjaron specimens named as P. fontana and P. tomentella differ from the representatives of the high arctic to boreal populations, and are excluded. A key to the accepted species and descriptions and illustrations of P. schroederi and P. tricolor are provided. P. platyneura is synonymized with P. tricolor. The relationship of P. globosa with P. schroederi needs a further study and the presence of P. dregeana on Kilimanjaro needs to be confirmed. Additional notes are given of P. falcata (W.J. Hook.) Mitt., P. heleniana (Mitt.) Herz., P. helenica (Besch.) Par. and P. usambarica Broth. Lectotypes are designated for P. tricolor and Bartramia gemmascens Müll.Hal. (= Philonotis gemmascens) and Philonotis section Leiocarpus Broth. The taxonomy of the sections of Philonotis is discussed; two sections, Philonotis and Philonotula (Bruch, Schimp. & Gümbel) A. Jaeger include most of the species. P. dregeana (Müll.Hal.) A. Jaeger, P. gemmascens (Müll.Hal.) Par., P. globosa (Müll.Hal.) D.G. Griffin & W.R. Buck, P. marangensis Broth. (= P. hastata (Duby) Wijk & Margad.) and P. schroederi Broth. belong to the section Philonotula. P. fontana (Hedw.) Brid., P. platyneura P.Varde, P. tomentella Molendo and P. tricolor (Müll.Hal.) Par. are the species of the section Philonotis.