Difference between revisions of "Mentzelia rusbyi"
Bull. Torrey Bot. Club 25: 261. 1898.
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|name=Nuttallia rusbyi | |name=Nuttallia rusbyi | ||
|authority=(Wooton) Rydberg | |authority=(Wooton) Rydberg | ||
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Loasaceae;Mentzelia;Mentzelia sect. Bartonia;Mentzelia rusbyi | |hierarchy=Loasaceae;Mentzelia;Mentzelia sect. Bartonia;Mentzelia rusbyi | ||
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name=Mentzelia rusbyi | name=Mentzelia rusbyi | ||
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|authority=Wooton | |authority=Wooton | ||
|rank=species | |rank=species | ||
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|publication year=1898 | |publication year=1898 | ||
|special status=Endemic | |special status=Endemic | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V12/V12_356.xml |
|genus=Mentzelia | |genus=Mentzelia | ||
|section=Mentzelia sect. Bartonia | |section=Mentzelia sect. Bartonia | ||
Revision as of 18:57, 16 December 2019
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.
Phenology: Flowering Jul–Aug(–Sep).
Habitat: Mesic habitats, moist washes, roadsides, roadcuts, steep to gentle slopes, disturbed sites, rocky soils composed of sand and loam.
Elevation: 1800–3100 m.
Distribution
Ariz., Colo., N.Mex., Utah, Wyo.
Discussion
Selected References
None.