Mentzelia marginata (Osterh.) H.Thomps. & Prigge

Colorado blazingstar (en)

Species

Angiosperms > Cornales > Loasaceae > Mentzelia

Characteristics

Plants winter annual or biennial, candelabra-form. Stems solitary, erect, straight; branches mostly distal, proximal longer than distal, all usually extending to near the distal end of plant, antrorse, straight; hairy. Leaves: blade 22–115 × 2.8–10.9(–17.2) mm, widest intersinus distance 2.2–7(–9) mm; proximal oblanceolate, elliptic, or lanceolate, margins dentate, teeth 10–24(–38), perpendicular to leaf axis, 0.5–4 mm; distal elliptic to lanceolate, base not clasping, margins dentate, teeth 8–20, perpendicular to leaf axis, 0.3–5.6 mm; abaxial surface with simple grappling-hook, complex grappling-hook, and usually with needlelike trichomes, adaxial surface with simple grappling-hook and needlelike trichomes. Bracts: margins entire. Flowers: petals golden yellow, 8–14.4 × 2.1–3.9 mm, apex acute, hairy abaxially; stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 5.5–11.1 × 1.2–2.9 mm, with anthers, second whorl with anthers; anthers straight after dehiscence, epidermis papillate; styles 5.3–10 mm. Capsules cylindric, 7–14.6 × 3.5–6.7 mm, base tapering, not longitudinally ridged. Seeds: coat anticlinal cell walls straight to slightly wavy, papillae 4–10 per cell. 2n = 20.
Life form
Growth form herb
Growth support -
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
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Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
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Hardiness (USDA) 4-9

Usage

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

Cultivation

Mode -
Germination duration (days) 5 - 21
Germination temperacture (C°) 12 - 15
Germination luminosity -
Germination treatment -
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Optimum temperature (C°) -
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Distribution

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

Identifiers

LSID urn:lsid:ipni.org:names:943355-1
WFO ID wfo-0001073783
COL ID 3ZSKK
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Mentzelia marginata Nuttallia marginata Mentzelia marginata var. marginata