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Grammitis nimbata (Jenman) Proctor
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Grammitis nimbata, entire
© George Yatskievych, 2006-2011 · 1
Grammitis nimbata, entire

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Grammitis nimbata, pinnae
© George Yatskievych, 2006-2011 · 1
Grammitis nimbata, pinnae
Grammitis nimbata, sporangia
© George Yatskievych, 2006-2011 · 1
Grammitis nimbata, sporangia
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Grammitis nimbata (Jenman) Proctor
West Indian dwarf polypody

General Information
Symbol: GRNI
Group: Fern
Family: Grammitidaceae
Duration: Perennial
Growth Habit : Forb/herb
Native Status : L48   N
Data Source and Documentation
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Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   




Symbol Scientific Name
MINI Micropolypodium nimbatum (Jenman) A.R. Sm.


Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Division Pteridophyta – Ferns
Class Filicopsida
Order Polypodiales
Family Grammitidaceae – Kihi Fern family
Genus Grammitis Sw. – dwarf polypody
Species Grammitis nimbata (Jenman) Proctor – West Indian dwarf polypody

Subordinate Taxa

This plant has no children

Legal Status

Threatened and Endangered Information:
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete protected plant list for that location.
North Carolina dwarf polypody fern Endangered

Wetland Status

Interpreting Wetland Status


MINI   Micropolypodium nimbatum (Jenman) A.R. Sm.

North America
Eastern Mountains and Piedmont OBL

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Flora of North America (GRNI)
Integrated Taxonomic Information System (GRNI)



Source Large Mammals Small Mammals Water Birds Terrestrial Birds


Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover

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Following modified from Flora of North America
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FNA | Family List | FNA Vol. 2 | Grammitidaceae | Grammitis

1. Grammitis nimbata (Jenman) Proctor, Bull. Inst. Jamaica, Sci. Ser. 5: 34. 1953.

Polypodium nimbatum Jenman, J. Bot. 24: 271. 1886; Xiphopteris nimbata (Jenman) Copeland

Stems erect, apices bearing scales; scales lustrous yellow to brownish, concolored, 0.5--1 mm, margins stiffly ciliate. Leaves densely fasciculate, 3--7 cm. Petiole 2--7 × 0.5 mm, densely hairy; hairs dark reddish or brownish, 0.8--1 mm. Blade linear, pinnatifid ca. 2/3 to rachis, narrowed and short-decurrent proximally, 3--5 mm wide; rachises and blade tissue on both sides with crowded, spreading setae like those of petiole or longer. Segments mostly in 20--30 pairs, oblique-spreading, oblong, 0.8--1.2 mm wide with entire margins. Veins concealed abaxially, unbranched, or fertile segments sometimes with single acroscopic branch, veins ending in hydathodes on adaxial surface. Sori round, 1 per segment, arising near base of acroscopic veinlet; sporangia glabrous.

On moist cliffs behind falls; ca. 500--1000 m; N.C.; West Indies in Cuba, Jamaica, Hispaniola.

Grammitis nimbata was discovered in the United States in Macon County, North Carolina, at a single locality, in 1966 (D. R. Farrar 1967) and has persisted to the present (D. R. Farrar, in litt. 1989). Primarily, the colony is gametophytic and reproduces by microscopic gemmae borne on the elongate-cordate thallus, but sterile sporophytes have been found in favorable years. The species description and illustration are based on mature spore-bearing plants from the Greater Antilles. The largest plants found from North Carolina are less than 3 cm.

Updated: 2020-08-06 20:00:56 gmt
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