{{Short description|Genus of ferns}} {{automatic taxobox | image = | taxon = Archigrammitis | authority = Parris<ref name=PPGI/> | type_species = ''Archigrammitis friderici-et-pauli'' | type_species_authority = (Christ) Parris<ref name=PPGI/> | subdivision_ranks = Species | subdivision = See text. }}
'''''Archigrammitis''''' is a genus of ferns in the family Polypodiaceae, subfamily Grammitidoideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I).<ref name=PPGI/> It is known from Malesia and Polynesia.
==Description== The rhizomes are dorsiventral (having distinct upper and lower surfaces) with stipes closely spaced attached in two rows. The stipes are jointed and have phyllopodia at the base. The rhizome scales have hairy edges, and are of uniform color and usually glossy.<ref name="parris">{{cite journal |first=Barbara S. |last=Parris |title=''Archigrammitis'', a new genus of grammitid fern (Polypodiaceae) from Malesia and Polynesia |journal=Fern Gazette |volume=19 |issue=4 |pages=135–138 |year=2013}}</ref>
The leaf blades are undivided, usually bearing branched veins and more than one row of sori on either side of the costa. They always have unbranched hairs, while many species have branched hairs with a single gland at the apex. Some species have hydathodes, some of which are cretaceous (leaving a lime deposit on the leaf around them). The sporangia bear one to two (occasionally as many as six) stiff, simple straight hairs without glands at the tip of the sporangium.<ref name="parris" />
Parris observed that the genus resembles ''Prosaptia'' in bearing phyllopodia at the stipe bases, but lacks the clathrate rhizome scales of that genus. The presence of simple, stiff hairs on the sporangium is shared with ''Oreogrammitis'' and ''Radiogrammitis''.<ref name="parris" />
==Taxonomy== The genus was first described by Barbara Parris in 2013 to receive some of the species of the genus ''Grammitis'', which as then circumscribed was artificial and contained a number of disparate lineages. The name "''Archigrammitis''" means "chief ''Grammitis''", referring to the size of the fronds, ''A. friderici-et-pauli'' being the largest member of ''Grammitis'' under the former circumscription.<ref name="parris" />
===Species=== {{As of|2025|October}}, the ''Checklist of Ferns and Lycophytes of the World'' accepted the following seven species:<ref name=CFLW/> *''Archigrammitis demissa'' <small>(Parris) Parris</small> *''Archigrammitis friderici-et-pauli'' <small>(Chris) Parris</small> *''Archigrammitis marquesensis'' <small>(Parris) Parris</small> *''Archigrammitis ponapensis'' <small>(Copel.) Parris</small> *''Archigrammitis samoensis'' <small>(Baker) Parris</small> *''Archigrammitis solomonensis'' <small>Parris</small> *''Archigrammitis tahitiensis'' <small>(C.Chr.) Parris</small>
{{As of|2016}}, the genus had not yet undergone phylogenetic study.<ref name="phylo">{{cite journal |first1=Michael A. |last1=Sundue |first2=Barbara S. |last2=Parris |first3=Tom A. |last3=Ranker |first4=Alan R. |last4=Smith |first5=Erin L. |last5=Fujimoto |first6=Delia |last6=Zamora-Crosby |first7=Clifford W. |last7=Morden |first8=Wen-Liang |last8=Chiou |first9=Cheng-Wei |last9=Chen |first10=Germinal |last10=Rouhan |first11=Regina Y. |last11=Hirai |first12=Jefferson |last12=Prado |title=Global phylogeny and biogeography of grammitid ferns (Polypodiaceae) |journal=Molecular Phylogenetics and Evolution |volume=81 |pages=195–206 |year=2014 |doi=10.1016/j.ympev.2014.08.017 |pmid=25173566 |s2cid=21098484 |url=https://www.researchgate.net/publication/265176631}}</ref>
==References== {{Reflist|refs= <ref name=CFLW>{{cite WF |taxon=Archigrammitis |access-date=2025-10-18}}</ref>
<ref name=PPGI>{{citation |mode=cs1 |author=PPG I |year=2016 |title=A community-derived classification for extant lycophytes and ferns |journal=Journal of Systematics and Evolution |volume=54 |issue=6 |pages=563–603 |doi=10.1111/jse.12229|s2cid=39980610 |doi-access=free}}</ref> }}
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Category:Polypodiaceae Category:Fern genera