Difference between revisions of "Tonestus graniticus"
Phytologia 68: 178. 1990.
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|name=Haplopappus graniticus | |name=Haplopappus graniticus | ||
|authority=Tiehm & L. M. Schultz | |authority=Tiehm & L. M. Schultz | ||
+ | |rank=species | ||
|publication_title=Brittonia | |publication_title=Brittonia | ||
|publication_place=37: 165, fig. 1. 1985 | |publication_place=37: 165, fig. 1. 1985 | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Tonestus graniticus | name=Tonestus graniticus | ||
− | |||
|authority=(Tiehm & L. M. Schultz) G. L. Nesom & D. R. Morgan | |authority=(Tiehm & L. M. Schultz) G. L. Nesom & D. R. Morgan | ||
|rank=species | |rank=species | ||
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|publication year=1990 | |publication year=1990 | ||
|special status= | |special status= | ||
− | |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/V19-20-21/V20_399.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Tonestus | |genus=Tonestus |
Revision as of 20:28, 16 December 2019
Perennials, cespitose to ± mat-forming, 5.5–14 cm; with branched caudices surmounting well-developed taproots. Stems (clothed with marcescent leaf bases) densely stipitate-glandular. Leaves: basal blades ovate to spatulate, 12–40 × 5–12 mm; cauline petiolate (proximal) to sessile and ± clasping (distal), blades oblong to broadly lanceolate, 4–28 × 1–8 mm, markedly reduced distally; 1- or very weakly 3-nerved, margins usually irregularly dentate, rarely (basal, distal) entire, faces densely scabrous (hairs multicellular, conic), stipitate-glandular. Heads (1–)3–7(–11), in racemiform or apparently corymbiform arrays. Peduncles 0–15 mm (often apparently bracteolate). Involucres narrowly campanulate, 5–9 × 6–10 mm. Phyllaries 18–32, in 3–4 series, often reflexed distally, green, 1-nerved, unequal, proximally chartaceous and ± keeled, margins eciliate, faces stipitate-glandular; outer and mid ovate to oblong, 2–6 × 1–2 mm, apices obtuse to acute; inner linear to narrowly lanceolate, 4–6 × 1–2 mm, margins scarious, stipitate-glandular distally, apices acute to acuminate. Ray florets 0. Disc florets 13–23; corollas funnelform to ± ampliate distally, 3.5–5.5 mm, scarcely exceeding involucres, lobes erect to slightly spreading, 0.8–1 mm, 1/5–1/4 corolla length; anthers 1.6–2.1 mm; style-branch appendages lanceolate, 0.7–1.1 mm, stigmatic lines 0.6–1.1 mm. Cypselae cylindric, 1.5–3 mm, weakly 4–7-nerved, faces strigose; pappus bristles 25–35, brittle. 2n = 18.
Phenology: Flowering and fruiting mid–late summer.
Habitat: Crevices of granite outcrops
Elevation: 2400 m
Discussion
Of conservation concern.
Tonestus graniticus is known only from the Great Basin, from the east side of Lone Mountain, Esmeralda County.
Selected References
None.