Table Of Content138 Novon
Hooper, S. S. & D. M. Napper. 1972. Cyperaceae. Pp. Kukenthal, G. 1935-1936. Cypera
278-349 in F. N. Hepper (editor), Flora of West Tropical
Stuttgart.
IUCN. 2001. IUCN Red List Categories and Criteria, Version
3.1. Prepared by the IUCN Species Survival Commission. van Angola. Master’s Thesis, Ghent University, Ghent,
New Combinations and One New Name for the Moss Genus
Taxithelium (Pylaisiadelphaceae)
Paulo E. A. S. Camara
Missouri Botanical Garden, P.0. Box 299, St. Louis, Missouri 63166-0299, U.S.A., and
Universidade de Brasilia, Departamento de Botanica, Campus Asa Norte, Caixa Postal 04457,
70910-970 Brasilia, D.F., Brazil, [email protected]; [email protected]
Abstract. During the taxonomic revision of Ta.
thelium Spruce ex Mitt. (Pylaisiadelphaceae), species Goffinet & Buck, 2004), a family that lacks
previously treated in the genus are excluded, and Those ab-
associated Taxithelium more with the Pylaisia-
chaete novae-zeelandiae (E. B. Bartram & Dixon) P. E
A. S. Camara, Chaetomitrium spuriosubtile (Broth.) P Taxithelium is a pantropical genus occurring mainly in
E. A. S. Camara, Phyllodon bilobatus (Dixon) P. E. A Southeast Asia between 30°N and 20°S. The genus is
S. Camara, P. choiropyxis (Mull. Hal.) P. E. A. S currently under taxonomic revision by this author, and it
Camara, P. glossoides (Bosch & Sande Lac.) P. E. A has been suggested to be monophyletic by the ongoing
S. Camara, Sematophyllum bomeense (Broth.) P. E. A work by Camara and Shaw (unpublished). It is
S. Camara, S. mundulum (Sull.) P. E. A. S. Camara, characterized by the presence in the gametophyte of
and Trichosteleum friedense (D. H. Norris & T. J. Kop.) multiple papillae serially disposed over the lumina of leaf
P. E. A. S. Camara. The new name Sematophyllum cells (a rare character present only in one other genus
laevigatum P. E. A :: Radulina W. R. Buck & B. C.
Tan). Taxithelium also has a poorly developed alar region,
are also provided for Sigmatella choiropyxis Mull. Hal. and the sporophytes lack collenchymatous exothecial
and Hypnum trachaelocarpum Angstr.
Key words: Hypnaceae, Phyllodon, Pylaisiadel¬ be easily differentiated from Radulina due to the presence
phaceae, Sematophyllaceae, Sematophyllum, Taxi¬
thelium, Trichosteleum.
Eight new combinations are presented here to allow
The genus Taxithelium Spruce ex Mitt, was first proper recircumscription of the genus. These taxa all
described by Mitten (1869) in tribe Sematophylleae. lack pluripapillose leaf cells, which is a diagnostic
Later, Brotherus (1925) assigned the genus to the family character for Taxithelium. This observation is ad¬
Sematophyllaceae, but much dressed in more detail in the SEM studies by Camara
and Kellogg (2010).
laceous characters in the genus such as the collenchy-
well-developed, often inflated alar cells (Seki, 1969;
Hedenas, 1996; Tan & Jia, 1998; Hedenas & Buck,
al. (2001a, b) have demonstrated that Taxithelium is not gNreowu pG uoifn e1a1, Nspeewc iCesa.l eIdto noicac,u Vrsa ninu atIun,d Foinjei,s iAa,u sPtraapliuaa,
phyllum Mitt., Trichosteleum Mitt., and Acroporium and New Zealand.
Mitt.), but is more closely related to Pylaisiadelpha 1. Camptochaete novae-zeelandiae (E. B. Bar-
tMra. nsFfelerrisecdh . thTeh ergeefnoures, TGaoxfiftihneelti uman d inBtou cka (n2e0w04ly) tBBraaamsrtior an&my m D&:i x DoTniax)x oiPnth., eEBli.ou tmA. .N noSot.. v Ca8e3a-m:z e7ae.r laa1,n 9dc3oi7ame. bT.E Y.n PoEBv:..
tchhiasr afacmteirlsy w(aass dsetastcerdib eidn onth eth eo rbiagsinisa lo f daebsscerinpcteio no:f N(heowlo tZyepael,a BndM. ).W ellington, 1874, S. Bergren s.n.
“Sematophyllaceis affine, cellulis exothecii non col-
lenchymat< i celluli alaribus parviore plerumque non spiral phyllotaxy in this species do not conform to the
doi: 10.3417/2008057 Novon 20: 139-142. Published on 9 June 2010.
140 Novon
(1955) suggested this species to be a synonym of 16016) is much smaller than Chaetomitrium (which
Camptochaete gracilis (Hook. f. & Wilson) Paris. can range from 0.6-1 mm), according to Akiyama and
Suleiman (2001) the genus is highly variable in shape
exclusion of this taxon from Taxithelium, but provided and size, which lends support to this taxon being a
no new combination or further evidence. A closer look local variation of Chaetomitrium. Therefore, I have
at the type specimen, ; provisionally placed this taxon in Chaetomitrium as
from MO, associates i the best fit based c
(Lembophyllaceae) on
glossy and scariose leaf with a falcate-secund
leaf papilla per cell. However, examination of
herbarium specimens shows that it is not conspecific The following three taxa share a truncate leaf apex,
visible and double, all characteristics of the pantrop-
II. Chaetomitrium Dozy & Molk., Musci Frond. ical genus Phyllodon. Furthermore, the presence of a
Ined. Archip. Ind. 117. 1846. TYPE: Hookeria single leaf papilla and an undeveloped alar region
elongata Dozy & Molk. provides strong support for their transfer to Phyllodon.
Buck (1987) studied the Asiatic species (4), Kis
Hanodo kSeurilaecimeaaen ((G20o0f1fi)n estt u&di edB utchke, g2e0n0u4s ).f orA kBioyranmeoa N(2i0s0h2im) utrhae (2A00fr2i)c anth oosen esd is(t6ri)b, utaendd inH itghuec hPi acaifnidc
as did Streimann (1997) for Australia. The Philippine
species has not yet been investigated and is
considered here. 1. Phyllodon bilobatus (Dixon) P. E. A. S. Camara,
Dixon, Bull. Torrey Bot. Club 51: 244. 1924.
Glossadelphus bilobatus (Dixon) Broth., Nat.
spuriosubtile Broth., Philipp. J. Sci. 5: 160. 1910. Pflanzenfam., ed. 2, 11: 535. 1925. TYPE:
TYPE: Philippines. Luzon: Lepanto, Mt. Data, Malaysia. Bujong Malacca: Perak, s.d., Ridley
1910, For. Bur., Bacani 16016 (holotype, H; 739 (holotype, BM; isotype, NY).
isotypes, BM, FH, JE, L, NY, PC, PNH, US).
2. Phyllodon choiropyxis (Mull. Hal.) P. E. A. %
opyxis Mull. Hal., Hedwigia 40: 69. 1901.
, and the leaf margins are serrulate and have a Taxithelium choiropyxis (Mull. Hal.) Renauld &
poorly developed alar region. It is clearly not a Cardot, Rev. Bryol. 28: 111. 1901. TYPE: Brazil.
species of Taxithelium, which is characterized by Sao Paulo: Iporanga, 1879, Puiggari s.n. (lecto-
pluripapillose leaf cells. Damanhuri and Longton type, designated here, FH).
sb(1tua9tt 9et4dh) e,t yhw ahhtao dt hs tniuso d tiiaedxdeo atn h wed higdeer nen uoistt Twbeaolxuoilntdhg eb lieinulo mTn gawx oaitnrhldde wleiuivdmeen,, WaTrh eI Ih, olwothyepne wthaes pBreesrulimn ehde drbesatrriouyme d wduasr inbgo Wmboerdld.
ekpnlnacoGnowteu’lnsre eadfrgegieacedt ,u prvsleuaescgr,ye ga menfseedtwin ott hn gseise.r nede iirsfa fn ictohu Daltt N awAs o tauhvledar ielfa itba rlwee ,i ttohto h tehmlipys tteihxoatnansn 6th 0oty0stp0ee d p ctlhaonellrtesec taoironen l looIa shnt a ffovrreoe mvloe cr2.a3 tA ehfdte erirsb saPtruiudai,yg igtnhager im oson.nrlye.
access phylogenetic information. However, the taxon collection, and I therefore assign it as lectotype here.
shape, the near absence of alar cells, the presence of a
single leaf papilla, and the similar serrulate margin.
is not typical of Chaetomitrium, Akiyama and Sulei¬ glossoides Bosch & Sande Lac., Bryol. Jav. 2:
man (2001: 493) have stated that the papillation 146. 243. 1866. Trichosteleum glossoides (Bosch
pattern in Chaetomitrium is highly variable and one & Sande Lac.) Geh., Rev. Bryol. 21: 85. 1894.
should not rely on “this feature alone in distinguishing Taxithelium glossoides (Bosch & Sande Lac.) M.
any taxa in the genus.” Fleisch., Nat. Pflanzenfam. 3: 1093. 1908.
