Xanthisma grindelioides var. depressum

(Maguire) D. R. Morgan & R. L. Hartman

Sida 20: 1404. 2003.

Endemic
Basionym: Haplopappus nuttallii var. depressus Maguire Amer. Midl. Naturalist 37: 144. 1947
Synonyms: Machaeranthera grindeloides var. depressa (Maguire) Cronquist & D. D. Keck
Treatment appears in FNA Volume 20. Treatment on page 388. Mentioned on page 389.

Plants densely cespitose, 3–8 (–12) cm. Leaves mostly crowded at base of stems, margins conspicuously white-bristled, bristles (1.5–) 2–4 mm. Heads usually 1. Peduncles 1–4 cm, usually ebracteate, occasionally bracteate.


Phenology: Flowering summer.
Habitat: Calcareous or clayey slopes
Elevation: 1300–2000 m

Discussion

Variety depressum was attributed to Arizona by J. T. Kartesz and C. A. Meacham (1999), but I have seen no specimen from there.

Selected References

None.

Lower Taxa

None.
not tailed +, rounded +  and obtuse +
distinct +
obtuse;acute +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Ronald L. Hartman +
(Maguire) D. R. Morgan & R. L. Hartman +
with green or purple-tinged strip or patch +  and herbaceous +
decurrent +
expanded +
indurate +
Haplopappus nuttallii var. depressus +
0.7 cm7 mm <br />0.007 m <br /> (6 cm60 mm <br />0.06 m <br />) +
lanceolate;spatulate or narrowly ovate +
reduced +
0.2 cm2 mm <br />0.002 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
rugulose +  and muricate +
barbellulate +  and barbellate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
not 2-lipped +  and actinomorphic +
yellow +, purple +, pink +  and white +
0.5 cm5 mm <br />0.005 m <br /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
oblong +  and narrowly obovoid +
fertile +  and bisexual +
fertile +  and bisexual +
Nev. +  and Utah. +
1300–2000 m +
stipitate-glandular +  and hairy +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Calcareous or clayey slopes +
discoid +  and radiate +
in corymbiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
hemispheric;campanulate +
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
ovate +  and orbiculate or depressed-elliptic +
unequal +
dentate +  and serrate +
pinnatifid;entire +
sessile +  and short-petiolate +
cauline +  and basal +
bristle-tipped +
triangular +
white-bristled +
serrate to serrulate +
2-carpellate +
whitish +  and tawny +
persistent +
30 +  and 90 +
flattened +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
bracteate +  and ebracteate +
stipitate-glandular +  and hairy +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering summer. +
appressed +  and reflexed +
oblong +  and broadly lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
purple +, lavender +, pink +  and white +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
densely whitish +  and tawny +
12 +  and 24 +
exalbuminous +
unequal +
distinct +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
not wiry +, branched +  and simple +
sprawling +, spreading +  and erect +
stipitate-glandular +  and hairy +
10 +  and 30 +
purple-tinged +  and green +
appendaged +  and truncate +
papillate +  and smooth +
Machaeranthera grindeloides var. depressa +
Xanthisma grindelioides var. depressum +
Xanthisma grindelioides +
variety +
forming reticulum +  and distinct +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
3 cm30 mm <br />0.03 m <br /> (50 cm500 mm <br />0.5 m <br />) +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
plant +  and cespitose +