J. Bot. (Schrader) 1800(2): 3, 17. 1802.

Etymology: Greek gramme, line, alluding to the elongate sori in a few species
Treatment appears in FNA Volume 2.
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Plants often less than 15 cm [rarely more than 50 cm]. Blade pinnatifid [simple to 1-pinnate or rarely more divided], bristly [or glabrous], glandless [or glandular]; setae dark reddish brown [to transparent]. Veins simple or 1-forked [to pinnately veined] in each segment, free, ending in hydathodes adaxially. Sori round [to oval or elongate], not forming a coenosorus, not sunken; paraphyses absent [or present]. x = 32, 33, 36, 37.


Tropical and subtropical, North America, South America, Asia, Africa, Pacific Islands, Australia.


The total number of species is based on acceptance of a relatively broad circumscription. Our sole species belongs to the group (genus or subgenus) formerly called Xiphopteris, a name that is now treated as a synonym of Cochlidium (L. E. Bishop 1978). This group comprises perhaps 30 species and is defined by the following characteristics: stem scales not clathrate, often marginally bristly; veins simple or with a single acroscopic branch in each segment; blades linear, usually pinnatifid or pinnatisect; lack of a marginal black border around blade; one sorus per segment; and hydathodes present. It probably warrants generic status under the name Micropolypodium Hayata, a primarily neotropical genus with representatives in eastern Asia (Malaysia, China, Sikkim, Taiwan, and Japan).

Species ca. 300 or more (1 in the flora).

Lower Taxa

... more about "Grammitis"
Alan R. Smith +
Swartz +
Tropical and subtropical +, North America +, South America +, Asia +, Africa +, Pacific Islands +  and Australia. +
Greek gramme, line, alluding to the elongate sori in a few species +
J. Bot. (Schrader) +
bishop1978a +  and farrar1967a +
Grammitis +
Grammitidaceae +