Nemacaulis denudata var. gracilis

Goodman & L. D. Benson

Aliso 4: 89. 1958.

Common names: Slender cottonheads
Treatment appears in FNA Volume 5. Treatment on page 442. Mentioned on page 441.
Revision as of 09:54, 30 July 2020 by imported>Volume Importer
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Plants 0.4–2.5 (–4) × 0.4–2 dm. Stems ascending to erect. Leaf-blades usually linear or narrowly spatulate, 1–7 × 0.1–0.6 cm. Inflorescences with slender, light-brown branches. Peduncles usually present, 0.5–3 mm. Involucral-bracts light-brown to yellowish green, 2–4 × 0.5–1 mm, tawny-tomentose. Flowers 5 (–12) per involucre, usually obscured by tomentum; perianth 0.5–1.2 mm; outer tepals linear to oblong.


Phenology: Flowering Jan–May.
Habitat: Coastal and desert sands, saltbush, creosote bush, and coastal grassland communities
Elevation: -10-500 m

Distribution

V5 924-distribution-map.gif

Ariz., Calif., nw Mexico (Baja California), nw Mexico (Sonora)

Discussion

Variety gracilis is common in northwestern Mexico and somewhat less so in southwestern Arizona and southern California.

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.

brown;deep maroon or black +
3-gonous +
pink +  and red +
0.2 cm2 mm <br />0.002 m <br /> (?) +
James L. Reveal +
Goodman & L. D. Benson +
stipelike +
awn-tipped +  and simple +
linear;spatulate +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
glandular +  and glabrous +
triangular +  and obovate leaflike or scalelike +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
disarticulating +  and dichotomous +
light-brown +
not brittle +
lanate +  and glabrous +
4 +  and 10 +
slender +
just below the soil surface or and above the soil surface +  and spreading +
Slender cottonheads +
Ariz. +, Calif. +, nw Mexico (Baja California) +  and nw Mexico (Sonora) +
-10-500 m +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
pedicellate +  and sessile +
unisexual +  and bisexual +
disarticulating +  and solid +
decumbent to erect +  and prostrate +
unwinged +  and winged +
black +, red +, brown +  and yellowish +
exserted +  and included +
pubescent +  and glabrous +
spheroidal +, 4-gonous +, lenticular +, biconvex +, discoid +, 3-gonous +  and 2-gonous +
Coastal and desert sands, saltbush, creosote bush, and coastal grassland communities +
gland-tipped +
cymelike +, paniclelike +, racemelike +  and spikelike +
2.8 cm28 mm <br />0.028 m <br /> (?) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
light-brown +  and yellowish green +
connate +  and free +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
obscure +  and obvious +
urceolate +, campanulate +, turbinate +, prismatic +  and cylindric +
nonmembranous +
1 cm10 mm <br />0.01 m <br /> (7 cm70 mm <br />0.07 m <br />) +
spatulate +  and linear +
0.1cm;0.6cm +
persistent +
bractlike +
pubescent +  and glabrous +
lobed +, undulate +, crisped +, crenulate +  and entire +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
with gland-tipped hairs +  and glabrous +
urceolate +  and campanulate +
accrescent +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
Flowering Jan–May. +
homostylous +  and 3-carpellate +
, +  and solid +
slender;stout +
Illustrated +
decumbent to spreading or erect +  and prostrate +
ascending +  and erect +
glabrous +  and glandular or lanate +
penicillate +, fimbriate +  and capitate +
deciduous +  and persistent +
2-lobed +  and cylindric +
coriaceous +  and membranous +
consisting of a series +  and tubular +
distinct +
erect;spreading or recurved +
spreading;erect +
Eriogonum nemacaulis +
chambered +, , +  and solid +
slender +  and stout +
Nemacaulis denudata var. gracilis +
Nemacaulis denudata +
variety +
apiculate +, awn-tipped +, monomorphic +, , +  and petaloid +
lobed +  and laciniate +
coriaceous +
persistent +
membranous +
pubescent +  and glabrous +
3 +, 2 +  and 1 +