Isoetes butleri Engelm.

Species

Pteridophytes > Isoetales > Isoetaceae > Isoetes

Characteristics

Often ± dioecious (unique among our spp.); lvs 6–20 cm × 0.3–0.7 mm, erect, twisted, whitish or pale reddish-brown toward the base, with abundant stomates and 4 or more peripheral strands; sporangia oblong, 6–10(–14) mm, to one-half covered by the velum, marked with fine brown lines at maturity; megaspores (0.4–)0.5–0.65 mm wide, low-tuberculate or nearly smooth; 2n=22. Terrestrial on thin, seasonally wet soil, mostly over limestone; sc. Ky. to nw. Ga., w. to Ark. and e. Kans.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality dioecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.15 - 0.3
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity 7-9
Soil texture -
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

Isoetes butleri world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:130496-2
WFO ID wfo-0001108950
COL ID -
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Isoetes butleri Calamaria butleri