Eriogonum nudum var. decurrens

(S. Stokes) M. L. Bowerman

Fl. Pl. Ferns Mt. Diablo, 140. 1944.

Common names: Ben Lomand wild buckwheat
Endemic
Basionym: Eriogonum latifolium subsp. decurrens S. Stokes Eriogonum, 64. 1936
Treatment appears in FNA Volume 5. Treatment on page 313. Mentioned on page 309.

Plants 5–12 (–15) dm. Aerial flowering-stems occasionally slightly fistulose, 3–6 dm, tomentose. Leaves sheathing; blade 1–3 × 1–1.5 cm, tomentose abaxially, thinly floccose or glabrous adaxially, margins undulate-crisped. Inflorescences cymose, 50–100 × 30–60 cm; branches tomentose. Involucres 1–2 per cluster, 4–6 mm, tomentose. Flowers 3–4 mm; perianth white, glabrous.


Phenology: Flowering Jul–Oct.
Habitat: Deep sandy flats and slopes, chaparral communities, oak and pine woodlands
Elevation: 90-200 m

Discussion

Variety decurrens is restricted to the Ben Lomand sand hills area of Santa Cruz County, where it is uncommon.

Selected References

None.

Lower Taxa

None.

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light-brown;brown +
included +  and exserted +
3-gonous +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
acute;obtuse or rounded +
James L. Reveal +
(S. Stokes) M. L. Bowerman +
deciduous +  and persistent +
stipelike +
Eriogonum latifolium subsp. decurrens +
papillate +
awn-tipped +  and simple +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
glabrous +, floccose +  and tomentose +
oblanceolate;elliptic or ovate +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
not awn-tipped +
leaflike +  and semileaflike +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
glandular +, pubescent +  and glabrous +
scale-like +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
not brittle +
spreading +  and erect +
scabrellous +
ridged +, angled +  and round +
spreading +  and erect +
whorled +, opposite +  and alternate +
Ben Lomand wild buckwheat +
90-200 m +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
unisexual +, , +  and bisexual +
not attenuate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
hollow +  and solid +
decumbent to erect +  and prostrate +
slender;stout +
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 +
Deep sandy flats and slopes, chaparral communities, oak and pine woodlands +
reduced +
capitate +  and subcapitate +
100 cm1,000 mm <br />1 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
40 cm400 mm <br />0.4 m <br /> (80 cm800 mm <br />0.8 m <br />) +
dense +  and diffuse +
50 cm500 mm <br />0.5 m <br /> (100 cm1,000 mm <br />1 m <br />) +
cymelike +, paniclelike +, racemelike +  and spikelike +
30 cm300 mm <br />0.3 m <br /> (60 cm600 mm <br />0.6 m <br />) +
connate +  and free +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
turbinate +  and turbinate-campanulate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
nonmembranous +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
bractlike +
pubescent +  and glabrous +
undulate-crisped +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
tomentose +  and glabrous +
1 cm10 mm <br />0.01 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Flowering Jul–Oct. +
homostylous +  and 3-carpellate +
Fl. Pl. Ferns Mt. Diablo, +
, +  and solid +
slender;stout +
persistent +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
decumbent to erect +  and prostrate +
spreading +  and erect +
glandular +, pubescent +  and glabrous +
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 latifolium subsp. nudum +
chambered +  and solid +
slender +  and stout +
Eriogonum nudum var. decurrens +
Eriogonum nudum +
variety +
emarginate +  and entire +
0 +  and 1/2 +
oblong +  and obovate +
coriaceous +
spreading +  and erect +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
grayish +  and greenish +
floccose +  and tomentose +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +