Difference between revisions of "Mentzelia longiloba"
Ann. Missouri Bot. Gard. 21: 176. 1934.
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|name=Mentzelia multiflora subsp. longiloba | |name=Mentzelia multiflora subsp. longiloba | ||
|authority=(J. Darlington) Felger | |authority=(J. Darlington) Felger | ||
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|hierarchy=Loasaceae;Mentzelia;Mentzelia sect. Bartonia;Mentzelia longiloba | |hierarchy=Loasaceae;Mentzelia;Mentzelia sect. Bartonia;Mentzelia longiloba | ||
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name=Mentzelia longiloba | name=Mentzelia longiloba | ||
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|authority=J. Darlington | |authority=J. Darlington | ||
|rank=species | |rank=species | ||
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|publication title=Ann. Missouri Bot. Gard. | |publication title=Ann. Missouri Bot. Gard. | ||
|publication year=1934 | |publication year=1934 | ||
| − | |special status= | + | |special status=Illustrated |
| − | |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_176.xml |
|genus=Mentzelia | |genus=Mentzelia | ||
|section=Mentzelia sect. Bartonia | |section=Mentzelia sect. Bartonia | ||
Revision as of 19:56, 16 December 2019
Plants biennial or perennial, bushlike or candelabra-form, perennials with ground-level caudices. Stems solitary, erect, straight; branches distal or along entire stem, distal or proximal longest, antrorse, upcurved; hairy. Leaves: blade 35–112 × 4.3–27.1 mm, widest intersinus distance 2.3–15.3 mm, always on some leaves 4+ mm; proximal oblanceolate to elliptic, margins dentate to pinnate, teeth or lobes 12–30(–50), perpendicular to leaf axis or antrorse, 1–9 mm; distal lanceolate, base not clasping, margins serrate to pinnate, teeth or lobes 8–28, perpendicular to slightly antrorse, 0.8–7.5 mm; abaxial surface with simple grappling-hook, complex grappling-hook, and generally needlelike trichomes, adaxial surface with simple grappling-hook and needlelike trichomes. Bracts: margins entire or toothed to pinnate. Flowers: petals golden yellow, 11.3–20.4 × 2.9–7.2[–8.9] mm, apex acute to rounded, glabrous abaxially; stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 10.4–17.8 × 1.9–5.2[–5.6] mm, with or without anthers, second whorl with anthers; anthers straight after dehiscence, epidermis smooth; styles (5.4–)8.5–10.9(–13) mm. Capsules cup-shaped to cylindric, [7.6–]9.1–16.4 × 5.7–9.2 mm, length usually to 2 times diam., sometimes a few more, base tapering to rounded, not longitudinally ridged. Seeds: coat anticlinal cell walls straight or sinuous, papillae 4–106 per cell.
Distribution
sw, sc United States, n Mexico.
Discussion
Varieties 4 (3 in the flora).
Variety pinacatensis J. J. Schenk & L. Hufford is known from the Mexican state of Sonora.
Selected References
None.
Lower Taxa
Key
| 1 | Seed coat anticlinal cell walls straight, papillae 4–6 per cell; margins of proximal leaf blades dentate. | Mentzelia longiloba var. chihuahuaensis |
| 1 | Seed coat anticlinal cell walls sinuous, papillae 10–106 per cell; margins of proximal leaf blades pinnate. | > 2 |
| 2 | 5 outermost stamens without anthers; leaf blade margin teeth or lobes perpendicular to leaf axis; seed coat cell papillae 67–106 per cell. | Mentzelia longiloba var. longiloba |
| 2 | 5 outermost stamens with anthers; leaf blade margin teeth or lobes slightly antrorse; seed coat cell papillae 10–21 per cell. | Mentzelia longiloba var. yavapaiensis |