Cystopteris tennesseensis Shaver

Tennessee bladderfern (en)

Species

Pteridophytes > Polypodiales > Cystopteridaceae > Cystopteris

Characteristics

Stems creeping, not cordlike, internodes short, heavily beset with old petiole bases, hairs absent; scales usually tan to light brown, lanceolate, radial walls tan to brown, thin, luminae tan. Leaves monomorphic, crowded near stem apex, to 45 cm, nearly all bearing sori. Petiole variable in color but mostly dark brown at base, gradually becoming straw-colored distally, shorter than blade, sparsely scaly at base. Blade deltate to narrowly deltate, 2-pinnate-pinnatifid, usually widest at or near base, apex short-attenuate; rachis and costae with occasional unicellular, gland-tipped hairs, with or without bulblets (usually misshapen); axils of pinnae with infrequent multicellular, gland-tipped hairs. Pinnae usually perpendicular to rachis, not curving toward blade apex, margins serrate; proximal pinnae pinnatifid to pinnate-pinnatifid, ± equilateral, basiscopic pinnules not enlarged, basal basiscopic pinnules sessile to short-stalked, base truncate to obtuse; distal pinnae ovate to oblong. Veins directed into teeth and notches. Indusia cup-shaped, apex truncate, with scattered, unicellular, gland-tipped hairs. Spores spiny, usually 38--42 µm. 2 n = 168.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality -
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.3 - 0.45
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 4-6
Soil humidity 5-7
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-9

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Cystopteris tennesseensis world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:17387210-1
WFO ID wfo-0001109564
COL ID 33Q34
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Cystopteris tennesseensis Cystopteris fragilis var. simulans