Huperzia

Huperzia is a genus of lycophyte plants, sometimes known as the firmosses or fir clubmosses. This genus was originally included in the related genus Lycopodium, from which it differs in having undifferentiated sporangial leaves, and the sporangia not formed into apical cones. The common name firmoss, used for some of the north temperate species, refers to their superficial resemblance to branches of fir (Abies), a conifer. In Australia, the epiphytic species are commonly known as tassel ferns.

Firmosses
Huperzia selago in Austria
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Lycophytes
Class: Lycopodiopsida
Order: Lycopodiales
Family: Lycopodiaceae
Subfamily: Huperzioideae
Genus: Huperzia
Bernh.
Species

About 400 species; see text

Morphology

The plants of this genus generally have radial ranks of entire, linear to lanceolate evergreen leaves and dichotomously-branched (forking) vegetative stems. The spores are borne in kidney-shaped sporangia borne individually on the stem at the bases of unmodified leaves.

Unlike clubmosses, firmosses grow in clusters rather than running. The roots are produced in the tips of the shoots, growing downward in cortex to emerge at soil level. Horizontal stems are absent.

Taxonomy

The genus has a cosmopolitan distribution, with about 400 species. Some botanists however split Huperzia into two genera, Huperzia in the narrow sense including 10-15 species of terrestrial temperate to Arctic species, and the rest in Phlegmariurus, a primarily tropical to subtropical genus of mainly epiphytic species. Huperzia and its relatives are included in the family Huperziaceae in some classifications, or alternatively in a more broadly defined Lycopodiaceae in others.

Species
  • Huperzia appalachiana Beitel & Mickel
  • Huperzia archboldiana (Nessel) Holub
  • Huperzia arunachalensis (D.D.Pant & P.S.Pandey) Fraser-Jenk.
  • Huperzia asiatica (Ching) N.Shrestha & X.C.Zhang
  • Huperzia australiana (Herter) Holub
  • Huperzia beccarii (Alderw.) Holub
  • Huperzia bucahwangensis Ching
  • Huperzia campestris (Alderw.) Holub
  • Huperzia chinensis (Christ) Ching
  • Huperzia chishuiensis X.Y.Wang & P.S.Wang
  • Huperzia continentalis Testo, A.Haines & A.V.Gilman
  • Huperzia crispata (Ching) Ching
  • Huperzia emeiensis (Ching & H.S.Kung) Ching & H.S.Kung
  • Huperzia erubescens (Brack.) Holub
  • Huperzia everettii (Herter) Holub
  • Huperzia fuegiana (Roiv.) Holub
  • Huperzia gedeana (Alderw.) Holub
  • Huperzia goliathensis (Alderw.) Holub
  • Huperzia haleakalae (Brack.) Holub
  • Huperzia herteriana (Kümmerle) T.Sen & U.Sen
  • Huperzia javanica (Sw.) Fraser-Jenk.
  • Huperzia jejuensis B.Y.Sun & J.Lim
  • Huperzia kangdingensis (Ching) Ching
  • Huperzia kunmingensis Ching
  • Huperzia laipoensis Ching
  • Huperzia lajouensis Ching
  • Huperzia leishanensis X.Y.Wang
  • Huperzia liangshanica (H.S.Kung) Ching & H.S.Kung
  • Huperzia lucidula (Michx.) Trevis.
  • Huperzia medogensis Ching & Y.X.Lin
  • Huperzia meghalaica Fraser-Jenk.
  • Huperzia miniata (Spring) Trevis.
  • Huperzia minima (Herter) Holub
  • Huperzia miyoshiana (Makino) Ching
  • Huperzia muscicola W.M.Chu
  • Huperzia nanchuanensis (Ching & H.S.Kung) Ching & H.S.Kung
  • Huperzia nanlingensis Shrestha, F.W.Xing, X.P.Qi, Y.H.Yan & X.C.Zhang
  • Huperzia occidentalis (Clute) Kartesz & Gandhi
  • Huperzia petrovii Sipliv.
  • Huperzia porophila (F.E.Lloyd & Underw.) Holub
  • Huperzia quasipolytrichoides (Hayata) Ching
  • Huperzia rubicaulis S.K.Wu & X.Cheng
  • Huperzia rubricaulis (Alderw.) Holub
  • Huperzia saururoides (Bory & D'Urv.) Rothm.
  • Huperzia selago (L.) Bernh. (including H. selago subsp. appressa - Appalachian firmoss)
  • Huperzia serrata (Thunb.) Trevis.
  • Huperzia shresthae Fraser-Jenk.
  • Huperzia somae (Hayata) Ching
  • Huperzia sprengeri (Nessel) Holub
  • Huperzia suberecta (Lowe) Tardieu
  • Huperzia sumatrana (Alderw.) Holub
  • Huperzia sutchueniana (Herter) Ching
  • Huperzia tibetica (Ching) Ching
  • Huperzia yakusimensis (Herter) Holub
  • Huperzia zollingeri (Herter) Holub

Former species

Many species of Huperzia are placed in the genus Phlegmariurus, including:

References
    This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.