Tetradymia nuttallii

Torrey & A. Gray

Fl. N. Amer. 2: 447. 1843.

Endemic
Treatment appears in FNA Volume 20. Treatment on page 631. Mentioned on page 630.
Revision as of 20:25, 29 July 2020 by imported>Volume Importer
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Shrubs, 10–120 cm. Stems 1–5+, erect, spiny, pannose but for glabrescent streaks. Leaves: primaries forming straight or recurved spines, 5–25 mm; secondaries spatulate, 10–20 mm, tomentose to nearly glabrous. Heads 4–6. Peduncles 2–12 mm. Involucres turbinate to cylindric, 6–9 mm. Phyllaries 4, oblong. Florets 4; corollas bright-yellow, 8–10 mm. Cypselae 4–6 mm, densely hirsute; pappi of 75–100 bristles 9–10 mm. 2n = 60.


Phenology: Flowering spring–summer.
Habitat: Rocky or sandy places, sagebrush scrub or shadscale scrub
Elevation: 1300–2100 m

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Tetradymia nuttallii"
not tailed +, rounded +  and obtuse +
papillate +
truncate-penicillate;usually truncate;rounded-truncate +
scarious +
usually ovate +  and lance-linear +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
John L. Strother +
Torrey & A. Gray +
decurrent +
linear;filiform narrowly lanceolate or oblanceolate +
winged;nerved;ribbed +
barbellulate +  and smooth +
0.9 cm9 mm <br />0.009 m <br /> (1 cm10 mm <br />0.01 m <br />) +
bright-yellow +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
prismatic +  and obconic or fusiform +
fertile +  and bisexual +
fertile +  and bisexual +
Nev. +, Utah +  and Wyo. +
1300–2100 m +
glabrescent +, lanate +  and tomentose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Rocky or sandy places, sagebrush scrub or shadscale scrub +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
turbinate;cylindric +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
linear +  and lanceolate +
2-carpellate +
of 70 +  and 150 bristles or , , scales +
0.2 cm2 mm <br />0.002 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Flowering spring–summer. +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Fl. N. Amer. +
styliferous +, neuter +  and pistillate +
sterile +  and fertile +
bearing subulate enations +, hairy +  and bristly +
conic;usually flat;convex +
white;stramineous +
subulate +  and setiform +
tomentose +  and nearly glabrous +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
exalbuminous +
straight +
1 +  and 5 +
glabrescent +
appendaged +  and truncate +
papillate +
Compositae +
Tetradymia nuttallii +
Tetradymia +
species +
perennial +  and annual +