Eriogonum nortonii

Greene

Pittonia 2: 165. 1891.

Common names: Pinnacles wild buckwheat
EndemicConservation concern
Synonyms: Eriogonum vimineum subsp. nortonii (Greene) S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 420. Mentioned on page 414, 421.

Herbs, spreading, 0.5–2 dm, glabrous, usually reddish. Stems: aerial flowering-stems prostrate to ascending or weakly erect, 0.1–0.3 dm, glabrous. Leaves basal and cauline; basal: petiole 1–3 cm, tomentose, blade round to reniform, 0.5–1.5 × 0.5–1.5 cm, densely white-tomentose abaxially, subglabrous or glabrous and green adaxially; cauline: petiole and blade similar to basal leaves. Inflorescences cymose, not distally uniparous due to suppression of secondary branches, open, 4–18 × 10–30 cm; branches glabrous; bracts 1–2 × 1–2 mm. Peduncles absent. Involucres terminal at tips of slender branchlets proximally, not appressed to branches, broadly turbinate, 3–4 × 2.5–3.5 mm, glabrous; teeth 6–8, erect, 0.4–0.8 mm. Flowers 1–2 mm; perianth white to rose, glabrous; tepals monomorphic, obovate; stamens included, 1–1.5 mm; filaments glabrous. Achenes light-brown, 3-gonous, 1–1.3 mm.


Phenology: Flowering May–Aug.
Habitat: Sandy to gravelly slopes, mixed grassland and chaparral communities, oak and pine woodlands
Elevation: 300-1200 m

Discussion

Of conservation concern.

Eriogonum nortonii is a rare and localized species restricted to the Gabilan Range of Monterey and San Benito counties, from Fremont Peak south to The Pinnacles. It is confined largely to two protected areas, the Hastings Natural History State Reservation and the Pinnacles National Monument. A disjunct population is found southeast of Carmel Highlands in the Santa Lucia Mountains of Monterey County.

Selected References

None.

Lower Taxa

None.

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

... more about "Eriogonum nortonii"
light-brown +
included +  and exserted +
3-gonous +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
James L. Reveal +
Greene +
deciduous +  and persistent +
stipelike +  and acute +
Eriogonum sect. Oregonium +
awn-tipped +  and simple +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
glabrous +, subglabrous +  and white-tomentose +
round;reniform +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
not awn-tipped +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
glandular +, pubescent +  and glabrous +
scale-like +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
grooved +, disarticulating +  and dichotomous +
not brittle +
scabrellous +
ridged +, angled +  and round +
spreading +  and erect +
whorled +, opposite +  and alternate +
Pinnacles wild buckwheat +
300-1200 m +
unisexual +, , +  and bisexual +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
not disarticulating +  and solid +
decumbent to erect +  and prostrate +
not fistulose +
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 +
Sandy to gravelly slopes, mixed grassland and chaparral communities, oak and pine woodlands +
open +, uniparous +  and cymose +
capitate +  and subcapitate +
4 cm40 mm <br />0.04 m <br /> (18 cm180 mm <br />0.18 m <br />) +
cymelike +, paniclelike +, racemelike +  and spikelike +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
connate +  and free +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
nonmembranous +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
marcescent +
persistent +
cauline +  and basal +
bractlike +
pubescent +  and glabrous +
lobed +, undulate +, crisped +, crenulate +  and entire +
not swollen +
orthotropous +
accrescent +
erect to deflexed +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering May–Aug. +
homostylous +  and 3-carpellate +
, +  and solid +
slender;stout +
persistent +
Endemic +  and Conservation concern +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
decumbent to erect +  and prostrate +
erect +, ascending +  and prostrate +
short-pilose +, puberulent +, sericeous +, glabrous +, floccose +, tomentose +  and 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 vimineum subsp. nortonii +
chambered +  and solid +
slender +  and stout +
Eriogonum nortonii +
Eriogonum subg. Oregonium +
species +
emarginate +  and entire +
1/4 +  and 1/2 +
obovate +
coriaceous +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
involucral +
persistent +
membranous +
pubescent +  and glabrous +
short-pilose +, puberulent +, sericeous +, floccose +  and tomentose or lanate +
annual +, biennial +  and perennial +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +