Thamnobryum capense comb. nov. (Neckeraceae, Musci)

1 Pages·1991·0.42 MB·

by  Johannes Enroth

Thamnobryum capense comb. nov. (Neckeraceae, Musci)
Johannes Enroth
Department of Botany, University of Helsinki, Unioninkatu 44, SF-00170 Helsinki, Finland
Thamnobryum capense (Broth. & Dix.) Enroth, H-Broth. The habit, leaf areolation, and the ahaxially
comb. nov. Basionym: Thamnium capense strongly toothed costa clearly indicate the generic
Broth. & Dix. in Dix., Bull. Torrey Bot. Club position of Thamnobryum capense (Broth. & Dix.)
43: 71. 1 f. 2. 1916. Porothamnium capense Enroth.
(Broth. & Dix.) Sim, Trans. Hoy. Soc. South Sim (1926) cited a specimen (If bod 285, NYS)
Africa 15: 404. 1926. TYPE: South Africa. from Inanda, Natal in eastern South Africa. I have
“Habitat: in packing from Cape Town, 710, not seen that specimen, but Sim’s illustrations clearly
communicated by G. Webster” (Dixon, 1916) represent this species; he had also examined the
(holotype, BM not seen; isotype, H-Broth, “ex type material deposited in Dixon’s herbarium at BM.
herb. II. N. Dixon”). Illustrations: Dixon (1916:
pi. 1, fig. 2); Sim (1926: 404). Literature Cited
De Sloover (1983) noted that Porothamnium De Sloover, J. L. 1983. Note de bryologie africaine.
XII. Porotrichum et Porothamnium. Bull. Jard. Bot.
capense (Broth. & Dix.) Sim may belong to the
Natl. Belgique 53: 97-152.
genus Thamnobryum Nieuwl.: “D’apres les descrip¬ Dixon, H. N. 1916. New and rare African mosses, from
tions et illustrations, cette espece semble appartenir Mitten’s herbarium and other sources. Bull. Torrey
au genre Thamnobryum." However, he did not make Bot. Club 43: 63-81 + pi. 1.
Sim, T. R. 1926. The Bryophyta of South Africa,
a new combination, possibly because he had not seen
comprising Sphaerocarpales, Marchantiales, Junger-
the type specimen. In connection with preliminary
manniales, Anthocerotales, Sphagnales, Andreaeales,
studies on the Neckeraceae for the Hryologia Af- Polytrichales, Bryales. Trans. Roy. Soc. South Africa
ricana Project, I examined the isotype deposited in 15: I-III,
Novon 1: 110. 1991.