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Huperzia
''Huperzia'' is a genus of lycophyte plants, sometimes known as the firmosses or fir clubmosses; the ''Flora of North America'' calls them gemma fir-mosses. 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. , two very different circumscriptions of the genus were in use. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), ''Huperzia'' is one of three genera in the subfamily Huperzioideae of the family Lycopodiaceae. Most species in the subfamily are placed in the genus '' Phlegmariurus''. ''Huperzia'' is left with about 25 species, although not all have been formally transferred to other genera. Other sources recognize only ''Huperzia'', which then has about 340 species. M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huperzia Selago
''Huperzia selago'', the northern firmoss or fir clubmoss, is a vascular plant in the family Lycopodiaceae. It is small-ish, sturdy, stiff and upright and densely scale-leaved. This plant is an evergreen, perennial pteridophyte. The spores are produced June to September.Piirainen, Mikko; Piirainen, Pirkko; Vainio, Hannele (1999). ''Kotimaan luonnonkasvit'' 'Native wild plants''(in Finnish). Porvoo: WSOY. p. 14. It has a circumpolar distribution. Description The dichotomous stalk of the plant is 5-20 cm with the branches being of same length with one another. The leaves are densely spiral, flat and needle-like, 4-8 mm long. The sporangium are at the base of the leaves of the shoot's top. There are often bulbils in the leaf axils. Distribution and habitat It is a circumpolar plant, found in the northern parts of North America, Europe, and Asia. It is found in sandy pits, ditches, along lakeshores, heathland and in conifer swamps. In the northeastern United States, it is foun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phlegmariurus
''Phlegmariurus'' is a genus of lycophyte plants in the family Lycopodiaceae. The genus is recognized in the Pteridophyte Phylogeny Group classification of 2016 (PPG I), but not by some other sources, which keep it in a broadly defined ''Huperzia''. Taxonomy The genus was first described in 1909 by Wilhelm Herter as the section ''Phlegmariurus'' of the genus ''Lycopodium''. The section was elevated to a genus by Josef Ludwig Holub in 1964. Within the family Lycopodiaceae, ''Phlegmariurus'' is placed in the subfamily Huperzioideae. A phylogenetic study in 2016, employing both molecular and morphological data, concluded that either a one-genus or a three-genus division of the subfamily produced monophyletic taxa. The authors preferred the three-genus division, recognizing ''Huperzia'', ''Phlegmariurus'' and ''Phylloglossum ''Phylloglossum'', a genus in the clubmoss Family (biology), family Lycopodiaceae, is a small plant superficially resembling a tiny Poaceae, grass plant, gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huperzia Appalachiana
''Huperzia appalachiana'' is a species of clubmoss. Description The original description is:Stems tufted to shortly decumbent (), erect portions of stem tall. Stems appear to live for definite periods (about 10 years of spore production), then senesce and the entire plant dies. New stems produced by gemmae, which fall at base of older plant. Growth during juvenile period erect. Stems showing no annual constrictions. Mature portion of stem with markedly small leaves. Leaves ascending to spreading in juvenile portion, ascending to appressed in mature portion. Plants uniformly green to yellow-green. Adaxial leaf surfaces with large number of stomates (35-60 per half leaf). Leaf margin entire with occasional small papillae formed by marginal Range Restricted to acidic rock at high elevations along the lower Appalachians, and to northern latitudes elsewhere, generally near the Canadian border in Vermont, Maine, and Michigan, and up into the Canadian Shield. Habitat Acidic rock, oc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huperzioideae
Huperzioideae is a subfamily of lycopsids in the family Lycopodiaceae. It has sometimes been recognized as a separate family, Huperziaceae. The Pteridophyte Phylogeny Group classification of 2016 (PPG I) recognizes three extant genera: * ''Huperzia'' (temperate firmosses); about 25 species; terrestrial. * ''Phlegmariurus'' (tropical firmosses); about 250 species; previously included in ''Huperzia''; mainly epiphytes. * ''Phylloglossum'' (pygmy clubmoss); formerly thought to be only distantly related to ''Huperzia''. This is a terrestrial, grass-like plant with basal, 2–5 cm long, fleshy leaves. The only accepted species is '' Phylloglossum drummondii''. The plants are distinct from those of other members of the Lycopodiaceae in having erect (not creeping) growth; and in their spore-bearing structures being produced in the axils of unmodified leaves A leaf (: leaves) is a principal appendage of the stem of a vascular plant, usually borne laterally above ground a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
