Lorandersonia microcephala

(Cronquist) Urbatsch

Sida 21: 1622. 2005.

Common names: Smallhead heathgoldenrod
EndemicConservation concern
Basionym: Haplopappus microcephalus Cronquist Madroño 11: 186. 1951
Synonyms: Tonestus microcephalus (Cronquist) G. L. Nesom & D. R. Morgan
Treatment appears in FNA Volume 20. Treatment on page 179. Mentioned on page 177, 178.

Subshrubs, 5–20 cm (mat-forming); caudices woody. Stems 3–20+ (erect), green, simple (± ridged), sparsely stipitate-glandular, resinous. Leaves cauline, crowded near base of current-year growth, mostly ascending; blades with midnerves prominent usually plus 2 evident, collateral veins, elliptic to narrowly oblanceolate, 20–40 × 2–3.5 mm, flat to ± concave adaxially, margins entire, scarious, stipitate-glandular, apices acute, faces usually glabrous or stipitate-glandular, adaxially pustulate, gland-dotted and resinous along major nerves. Heads in corymbiform arrays 1–4 cm wide. Involucres obconic to subhemispheric, 6–8 mm. Phyllaries 24–30 in 3–4 series, green to tan, midnerves evident, ovate or lanceolate to elliptic, 3.5–7 × 0.7–1.3 mm, subequal, herbaceous or herbaceous-tipped (outer), usually chartaceous (inner), usually flat to convex, margins narrowly scarious, sometimes sparsely ciliate, apices attenuate to cuspidate (outer), acuminate to acute (inner), faces glabrous, resinous. Receptacles without scales. Ray-florets 5–8; laminae elliptic to narrowly obovate, 3.5–5 × ca. 1 mm. Disc-florets 10–15; corollas 4.3–4.7 mm, glabrous, lobes 0.5–1 mm; style-branches exserted, ca. 2.5 mm, appendages lanceolate, ca. 1.7 mm. Cypselae tan, oblong, 1.5–2.3 mm, 5–7 ribbed, faces moderately hairy; pappi tan (fine, barbellate), 3–5 mm. 2n = 18.


Phenology: Flowering late summer–fall.
Habitat: Thin soils or cracks on granite outcrops
Elevation: 2400–2700 m

Discussion

Of conservation concern.

Selected References

None.

Lower Taxa

None.

"fine" is not a number."[" is not declared as a valid unit of measurement for this property."]" is not declared as a valid unit of measurement for this property.

not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
lanceolate +
indeterminate +  and determinate +
rounded +
1cm +  and 4cm +
Lowell E. Urbatsch +, Roland P. Roberts +  and Kurt M. Neubig +
(Cronquist) Urbatsch +
decurrent +
Haplopappus microcephalus +
linear;oblong or lanceolate +
rugulose +  and muricate +
subequal +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Smallhead heathgoldenrod +
not 2-lipped +  and actinomorphic +
pale +  and dark yellow +
0.43 cm4.3 mm <br />0.0043 m <br /> (0.47 cm4.7 mm <br />0.0047 m <br />) +
5 +  and 7 +
fertile +  and bisexual +
fertile +  and bisexual +
Colo. +  and N.Mex. +
2400–2700 m +
resinous +
gland-dotted +
hairy +, glabrous +  and stipitate-glandular +
pustulate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Thin soils or cracks on granite outcrops +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
obconic;subhemispheric +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
3.5mm;5mm +
elliptic +  and narrowly obovate +
petiolate +  and sessile +
spreading;recurved +
lanceolate +  and triangular +
stipitate-glandular +
herbaceous-tipped +
3.5mm +  and 7mm +
evident +  and prominent +
usually flat +  and convex +
0.7mm +  and 1.3mm +
2-carpellate +
persistent +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering late summer–fall. +
green +  and tan +
ovate +  and oblong or lanceolate +
subequal +  and unequal +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
Endemic +  and Conservation concern +
resinous +
erect +  and ascending +
3 +  and 20 +
attenuate +  and subulate +
appendaged +  and truncate +
papillate +  and smooth +
Tonestus microcephalus +
Lorandersonia microcephala +
Lorandersonia +
species +
perennial +, biennial +  and annual +