Mentzelia rusbyi Wooton

Rusby's blazingstar (en)

Species

Angiosperms > Cornales > Loasaceae > Mentzelia

Characteristics

Plants biennial or perennial, candelabra-form, perennials with ground-level caudices. Stems solitary, erect, straight; branches distal, distal longest, antrorse, straight; hairy. Leaves: blade 41–123 × 6.4–26.4 mm, widest intersinus distance 4.8–18 mm; proximal spatulate, elliptic, or lanceolate, margins dentate, teeth 10–24, perpendicular to leaf axis, 0.6–3.6 mm; distal lanceolate, base not clasping, margins dentate, teeth 10–22, perpendicular to leaf axis, 1.2–6 mm; abaxial surface with simple grappling-hook, complex grappling-hook, and needlelike trichomes, adaxial surface with simple grappling-hook and needlelike trichomes. Bracts: margins pinnate. Flowers: petals light yellow, 11.8–23.8 × 3–6.9 mm, apex acute, glabrous abaxially; stamens light yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 9.2–19.5 × 1.5–4.5 mm, usually without, rarely with, anthers, second whorl with anthers; anthers straight after dehiscence, epidermis smooth; styles 9–14 mm. Capsules cylindric, (13–)18.8–29 × 7–10.5 mm, base tapering to rounded, longitudinally ridged. Seeds: coat anticlinal cell walls sinuous, papillae 23–54 per cell. 2n = 20.
Life form
Growth form herb
Growth support -
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
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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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Soil acidity -
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Hardiness (USDA) 4-10

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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Productivity -

Distribution

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

Identifiers

LSID urn:lsid:ipni.org:names:157517-2
WFO ID wfo-0001073703
COL ID 3ZSLW
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Nuttallia hastata Mentzelia rusbyi Hesperaster rusbyi Nuttallia rusbyi Touterea rusbyi Mentzelia pumila var. rusbyi Mentzelia nuda var. rusbyi