Mentzelia congesta Torr. & A.Gray

United blazingstar (en)

Species

Angiosperms > Cornales > Loasaceae > Mentzelia

Characteristics

Plants wandlike or candelabra-form, 7–40(–50) cm. Basal leaves persisting; petiole present or absent; blade linear-lanceolate to linear, margins usually deeply to shallowly lobed, rarely entire. Cauline leaves: petiole present or absent (proximal leaves), absent (distal leaves); blade linear-lanceolate to linear (proximal leaves), ovate-lanceolate (distal leaves), to 9 cm, margins deeply to shallowly lobed or entire. Bracts mostly white with green margins, conspicuous and showy, outer broadly ovate, inner obovate, outer 7–14.7 × 4.2–10.4 mm, inner 4.1–5.8 × 2.7–3.5 mm, width 1/2–7/8 length, concealing capsule, margins usually deeply 3–9-lobed to toothed, rarely entire. Flowers: sepals 1–4 mm; petals orange proximally, pale yellow to yellow distally, 2–8(–10) mm, apex retuse; stamens 20–40, 1.5–5 mm, filaments monomorphic, filiform, unlobed; styles 1.5–5 mm. Capsules cylindric or clavate, 5–12 × 2–3 mm, axillary curved to 10° at maturity, usually inconspicuously longitudinally ribbed. Seeds 10–25, in 2+ rows distal to mid fruit, tan, dark-mottled or not, irregularly polygonal, surface tessellate under 10× magnification; recurved flap over hilum absent; seed coat cell outer periclinal wall domed, domes on seed edges less than 1/2 as tall as wide at maturity. 2n = 18.
Life form annual
Growth form herb
Growth support -
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.07 - 0.4
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

It is a temperate plant.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-10

Usage

The seeds are parched and ground into a peanut butter like paste. Seeds are stored for later use.
Uses medicinal
Edible seeds
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 5 - 21
Germination temperacture (C°) 12 - 15
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Mentzelia congesta unspecified picture
Mentzelia congesta unspecified picture

Distribution

Mentzelia congesta world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:545387-1
WFO ID wfo-0001073667
COL ID 3ZSHK
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Trachyphytum congestum Mentzelia congesta Mentzelia davidsoniana Acrolasia congesta Acrolasia davidsoniana Mentzelia congesta var. davidsoniana Mentzelia congesta var. congesta