Eriogonum saxatile

S. Watson

Proc. Amer. Acad. Arts 12: 267. 1877.

Common names: Hoary wild buckwheat
IllustratedEndemic
Synonyms: Eriogonum saxatile subsp. multicaule S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 324. Mentioned on page 224, 225, 234, 325.

Herbs, loosely to densely matted, not scapose, (1–) 2–4 × 0.5–2 dm, densely white or grayish-lanate to tomentose or floccose. Stems spreading, often with persistent leaf-bases, up to 1/4 height of plant; caudex stems matted, decumbent to spreading; aerial flowering-stems spreading to erect, slender, solid, not fistulose, 0.5–1.5 dm, lanate to tomentose or floccose. Leaves basal or sheathing up stems 4 cm, 1 per node or fasciculate at tips of caudex branches; proximal leaves: petiole 1–3 (–4) cm, tomentose, blade obovate to rounded, 1–2 (–2.5) × 1–2 cm, lanate to tomentose; distal leaves sessile, blade elliptic to rounded, 0.3–1 × 0.3–1 cm, lanate to tomentose. Inflorescences cymose, 10–25 × 5–12 cm; branches dichotomous, lanate to tomentose or floccose; bracts 3–4, scalelike, triangular, 1.5–7 mm. Peduncles absent. Involucres 1 per node, turbinate, 3–4 × 2–3 mm, tomentose to floccose; teeth 5–6, erect, 0.8–1.5 mm. Flowers (3–) 5–7 mm, including elongate, sharply triangular, slightly winged, stipelike base; perianth white to rose or yellowish, glabrous; tepals connate proximally, dimorphic, those of outer whorl oblanceolate to lanceolate, 3–5 × 1.5–2 mm, those of inner whorl obovate, 4–6 × 2–3 mm; stamens included to slightly exserted, 2.5–5 mm; filaments pilose proximally. Achenes 3-gonous, nearly winged, 3.5–4 mm, glabrous. 2n = 40.


Phenology: Flowering May–Oct.
Habitat: Decomposed granitic or volcanic flats, slopes, and ridges, chaparral, saltbush, and sagebrush communities, pinyon-juniper and montane conifer woodlands
Elevation: (300-)800-3400(-3500) m

Discussion

Eriogonum saxatile is found mainly in arid mountains of California (Fresno, Inyo, Kern, Los Angeles, Mono, Monterey, Riverside, San Benito, San Bernardino, Santa Barbara, Tulare, and Ventura counties) and Nevada (Esmeralda and western Nye counties). The plants vary considerably as to robustness, degree of branching, and sprawl of the caudex. The size and position of the leaves also vary, as does the density of tomentum on the blades. Flower color varies from white to rose or yellowish, but the deep yellow of E. crocatum is never seen in E. saxatile. The species is frequently cultivated and is an excellent plant for the rock garden.

Selected References

None.

Lower Taxa

None.

"/2" 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."dm" is not declared as a valid unit of measurement for this property.

... more about "Eriogonum saxatile"
light;dark-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. Watson +
deciduous +  and persistent +
stipelike +, triangular +  and elongate +
Undefined subg. Eucycla +
papillate +
awn-tipped +  and simple +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
lanate +  and tomentose +
elliptic;rounded +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not awn-tipped +
leaflike +  and semileaflike +
glandular +, pubescent +  and glabrous +
triangular +  and scale-like +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
not brittle +
spreading +  and erect +
lanate +  and tomentose or floccose +
scabrellous +
ridged +, angled +  and round +
decumbent +  and spreading +
whorled +, opposite +  and alternate +
Hoary wild buckwheat +
Calif. +  and Nev. +
(300-)800-3400(-3500) m +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
unisexual +, , +  and bisexual +
not attenuate +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
decumbent to erect +  and prostrate +
not fistulose +
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 +
Decomposed granitic or volcanic flats, slopes, and ridges, chaparral, saltbush, and sagebrush communities, pinyon-juniper and montane conifer woodlands +
reduced +
capitate +  and subcapitate +
dense +  and diffuse +
10 cm100 mm <br />0.1 m <br /> (25 cm250 mm <br />0.25 m <br />) +
cymelike +, paniclelike +, racemelike +  and spikelike +
5 cm50 mm <br />0.05 m <br /> (12 cm120 mm <br />0.12 m <br />) +
connate +  and free +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
tomentose +  and floccose +
nonmembranous +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
bractlike +
pubescent +  and glabrous +
lobed +, undulate +, crisped +, crenulate +  and entire +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
white;rose or yellowish +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering May–Oct. +
homostylous +  and 3-carpellate +
Proc. Amer. Acad. Arts +
, +  and solid +
slender;stout +
persistent +
Illustrated +  and Endemic +
included +  and slightly exserted +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
decumbent to erect +  and prostrate +
glandular +, pubescent +  and glabrous +
4 cm40 mm <br />0.04 m <br /> (?) +
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 saxatile subsp. multicaule +
chambered +  and solid +
slender +  and stout +
Eriogonum saxatile +
Eriogonum subg. Eucycla +
species +
emarginate +  and entire +
in proximal 1/2 +  and connate +
0 +  and 1/2 +
lobed +  and laciniate +
coriaceous +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
grayish-lanate to tomentose or floccose +  and white +
herb +  and matted +
pubescent +  and glabrous +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +