Eriogonum sphaerocephalum var. halimioides

(Gandoger) S. Stokes

Eriogonum, 104. 1936.

Common names: Halimium wild buckwheat
Endemic
Basionym: Eriogonum halimioides Gandoger Bull. Soc. Roy. Bot. Belgique 42: 197. 1906
Synonyms: Eriogonum fruticulosum S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 362. Mentioned on page 361.

Leaf-blades mostly narrowly oblanceolate to narrowly spatulate, mostly tomentose on both surfaces or floccose adaxially, margins usually plane. Inflorescences capitate or umbellate. Perianths pale-yellow to cream or ochroleucous. 2n = 40.


Phenology: Flowering May–Jul.
Habitat: Sandy to gravelly, occasionally volcanic flats and slopes, sagebrush communities, juniper and montane conifer woodlands
Elevation: 300-2300 m

Distribution

V5 739-distribution-map.gif

Calif., Idaho, Nev., Oreg., Wash.

Discussion

Variety halimioides is common and widespread in three areas of concentration. The northernmost is east of the Cascade Range in central Washington (Douglas, Kittitas, Klickitat, and Yakima counties). The middle series of populations occurs from central Oregon (Gilliam, Jefferson, Union, Wallowa, and Wasco counties) east into Idaho (Blaine, Elmore, Gem, Gooding, and Washington counties). The southernmost series is in central-southern Oregon (Baker, Grant, Harney, Jackson, Klamath, Lake, Malheur, and Wheeler counties), northeastern California (Lassen, Modoc, Shasta, and Siskiyou counties), and northwestern Nevada (Humboldt and Washoe counties).

Variety halimioides is highly variable, and a clear distinction between it and some populations assigned here to E. douglasii var. douglasii is not always possible. Of particular concern are those plants of var. halimioides in northeastern Oregon and adjacent southeastern Washington with capitate rather than umbellate inflorescences. Much of what has passed for E. douglasii (especially its sublineare phase) in that area actually may be var. halimioides.

Selected References

None.

Lower Taxa

None.

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light-brown +
included +  and exserted +
3-gonous +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
James L. Reveal +
(Gandoger) S. Stokes +
deciduous +  and persistent +
loose to congested +
stipelike +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Eriogonum halimioides +
awn-tipped +  and simple +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.6 cm6 mm <br />0.006 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 />) +
tomentose +  and floccose or glabrous +
spatulate;oblanceolate;spatulate;oblanceolate;linear-oblanceolate +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
not awn-tipped +
glandular +, pubescent +  and glabrous +
scale-like +
grooved +, disarticulating +  and dichotomous +
not brittle +
glabrous +  and floccose +
scabrellous +
spreading +  and erect +
whorled +, opposite +  and alternate +
Halimium wild buckwheat +
Calif. +, Idaho +, Nev. +, Oreg. +  and Wash. +
300-2300 m +
curved +  and straight +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
unisexual +  and bisexual +
attenuate +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
decumbent to erect +  and prostrate +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
linear-oblanceolate +  and oblanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
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, occasionally volcanic flats and slopes, sagebrush communities, juniper and montane conifer woodlands +
umbellate +  and capitate +
subcapitate +  and capitate +
cymelike +, paniclelike +, racemelike +  and spikelike +
connate +  and free +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
turbinate-campanulate +  and campanulate +
nonmembranous +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
mostly narrowly oblanceolate +  and narrowly spatulate +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
cauline +  and basal +
bractlike +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
pale-yellow;cream or ochroleucous +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
glabrous +  and floccose +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Flowering May–Jul. +
homostylous +  and 3-carpellate +
, +  and solid +
slender;stout +
persistent +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
decumbent to erect +  and prostrate +
prostrate +  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 fruticulosum +
chambered +  and solid +
slender +  and stout +
Eriogonum sphaerocephalum var. halimioides +
Eriogonum sphaerocephalum +
variety +
emarginate +  and entire +
1/4 +  and 1/3 +
obovate +  and oblong-ovate +
coriaceous +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
sericeous +, lanate +  and tomentose floccose or glabrous +
dioecious +, polygamodioecious +, synoecious +  and polycarpic +
annual +, biennial +  and perennial +
glabrous +  and floccose +
proximally +  and midlength +
3 +, 2 +  and 1 +