Tetraneuris ivesiana

Greene

Pittonia 3: 269. 1898.

Endemic
Synonyms: Hymenoxys acaulis var. ivesiana (Greene) K. F. Parker Hymenoxys argentea var. ivesiana (Greene) Cronquist Hymenoxys ivesiana (Greene) K. F. Parker Tetraneuris intermedia Greene Tetraneuris mancosensis A. Nelson Tetraneuris pilosa Greene
Treatment appears in FNA Volume 21. Treatment on page 450. Mentioned on page 447, 448.

Perennials, 10–26+ cm. Caudices ± branched, branches notably thickened distally. Stems (1–) 5–20 (–30), erect, leafy, ± branched distally. Leaves basal and cauline, entire, glabrous or sparsely to moderately lanuginose to sericeous, usually densely glanddotted; basal leaves tightly clustered, blades linear-oblanceolate; proximal cauline blades linear-oblanceolate; mid-blades linear-oblanceolate to linear, 1.7–2 mm wide; distal blades linear-oblanceolate to linear. Heads (1–) 5–30 (–40) per plant (1–5 per stem), borne singly or in paniculiform to corymbiform arrays. Peduncles 5–18.5 cm, ± hairy, usually densely hairy distally. Involucres 8–12 × 13–17 mm. Outer phyllaries 7–12, 5–6.4 mm, margins 0–0.3 (–0.4) mm wide, usually scarious, abaxial faces ± hairy. Ray-florets 7–10; corollas 10–20 mm. Disc-florets (40–) 80–150+; corollas yellow, 3.3–4.5 mm. Cypselae 3–4.1 mm; pappi of 5–7 lanceolate or obovate to oblanceolate, aristate scales 2.7–4.5 mm. 2n = 28, 30, 56, 60.


Phenology: Flowering Apr–Aug.
Habitat: Roadsides, hillsides, open treeless areas, edges of woods
Elevation: 1300–2900 m

Distribution

V21-1129-distribution-map.gif

Ariz., Colo., N.Mex., Utah.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Tetraneuris ivesiana"
60 +, 56 +, 30 +  and 28 +
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
paniculiform +  and corymbiform +
indeterminate +  and determinate +
Mark W. Bierner +  and Billie L. Turner +
Greene +
decurrent +
compound +  and simple +
linear-oblanceolate +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
0.33 cm3.3 mm <br />0.0033 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
linear-oblanceolate;linear +
Ariz. +, Colo. +, N.Mex. +  and Utah. +
1300–2900 m +
more or less +  and eglandular +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Roadsides, hillsides, open treeless areas, edges of woods +
discoid +  and radiate +
in paniculiform to corymbiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.6 cm6 mm <br />0.006 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
hemispheric;campanulate +
1.3 cm13 mm <br />0.013 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
glabrous or +  and sparsely moderately lanuginose +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
0mm +  and 0.3mm +
linear-oblanceolate;linear +
connate +  and distinct +
ovate +, oblong +, oblanceolate +, linear +, lanceolate +  and elliptic +
unequal +  and subequal +
0.5 cm5 mm <br />0.005 m <br /> (0.64 cm6.4 mm <br />0.0064 m <br />) +
2-carpellate +
persistent +
5 +  and 7 +
obovate +  and oblanceolate +
5 cm50 mm <br />0.05 m <br /> (18.5 cm185 mm <br />0.185 m <br />) +
Flowering Apr–Aug. +
11 +  and 60 +
linear-oblanceolate +
bearing subulate enations +, hairy +  and bristly +
hemispheric;conic +
of 35 +  and 150 bristles +
aristate +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
exalbuminous +
branched +  and leafy +
5 +  and 20 +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Hymenoxys acaulis var. ivesiana +, Hymenoxys argentea var. ivesiana +, Hymenoxys ivesiana +, Tetraneuris intermedia +, Tetraneuris mancosensis +  and Tetraneuris pilosa +
Tetraneuris ivesiana +
Tetraneuris +
species +
urceolate +  and campanulate +
dilated +
10 cm100 mm <br />0.1 m <br /> (26 cm260 mm <br />0.26 m <br />) +
shrub +  and subshrub +