Vittaria lineata |
Vittaria |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|
shoestring fern |
shoestring fern |
|||||||||
Habit | Plants epiphytic. | |||||||||
Stems | short-creeping, branched, densely scaly; scales brown, apex attenuate, filiform. |
densely scaly. |
||||||||
Gemmae | tapering at ends, end cells not swollen; body cells 4–16, rhizoid primordia on each end cell, often on 1–2 medial cells. |
|||||||||
Leaves | 10–60 cm × 1–3 mm, petioles indistinct. |
pendent, linear. |
||||||||
Veins | anastamosing in single row of areolae on each side of midrib. |
|||||||||
Sori | in single submarginal groove on each side of midrib. |
|||||||||
Sporangia | protected by soral paraphyses that lack dilated terminal cells. |
|||||||||
Spores | monolete. |
|||||||||
Gametophytes | much branched. |
0.5–2 × 0.5–1 cm; gemmae uniseriate, 2–5 mm, borne at apices of aerial branches; body cells 2–16; rhizoid primordia cells 0–4. |
||||||||
2n | = 120. |
|||||||||
Vittaria lineata |
Vittaria |
|||||||||
Habitat | Epiphytic, most commonly on trunks of palms (Sabal palmetto Loddiges), in moist woods and especially along streams | |||||||||
Elevation | 0–100 m (0–300 ft) | |||||||||
Distribution |
FL; GA; Mexico; Central America; South America; West Indies
|
Worldwide in tropics and subtropics |
||||||||
Discussion | Sporophytes, now extirpated, once occurred on rock cliffs at a single site in Lincoln County, east central Georgia. Vittaria lineata is now known outside of Florida only in Camden County, in southeastern Georgia. Gametophytes commonly form the dominant cover on moist logs and tree trunks, especially the bases of Sabal palmetto palms, within the range of the sporophyte. Such populations usually contain numerous small, sexually produced sporophytes. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Species ca. 50 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
||||||||
Key |
|
|||||||||
Source | FNA vol. 2. | FNA vol. 2. | ||||||||
Parent taxa | Vittariaceae > Vittaria | Vittariaceae | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | Pteris lineata | |||||||||
Name authority | (Linnaeus) Smith | Smith | ||||||||
Web links |