Eriogonum heermannii var. heermannii

Common names: Heermann’s wild buckwheat
Endemic
Treatment appears in FNA Volume 5. Treatment on page 306. Mentioned on page 304, 307.

Shrubs, rounded, usually sparsely branched, 5–15 × 6–15 (–20) dm. Leaf-blades oblanceolate or spatulate to obovate, 0.5–1.5 × 0.2–0.6 cm, glabrous to slightly tomentose abaxially. Inflorescences (5–) 10–20 × (5–) 8–25 cm; branches rather diffuse, with racemosely arranged involucres at tips, stout, round, smooth, glabrous, not spinose. Involucres campanulate, 2–2.5 × 2–2.5 mm. Flowers (2.5–) 3–4 mm; perianth yellowish white.


Phenology: Flowering May–Nov.
Habitat: Sandy to gravelly washes, and slopes, mixed grassland and chaparral communities, oak and conifer woodlands
Elevation: 900-1700 m

Discussion

Variety heermannii is infrequently encountered in widely scattered locations in the Transverse Ranges of Los Angeles and Ventura counties. It is disjunct in the Caliente Mountains of San Luis Obispo County and apparently was first encountered somewhere along Poso Creek in Kern County, although it has not been collected there since the type was collected in 1853.

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

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 +
Durand & Hilgard in War Department [U.S.] +
deciduous +  and persistent +
stipelike +
Eriogonum geniculatum +
papillate +
awn-tipped +  and simple +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
tomentose +  and floccose or glabrous abaxially +
oblong;elliptic;spatulate;oblanceolate;oblong;elliptic;spatulate;oblanceolate;linear +
0.1 cm1 mm <br />0.001 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
not awn-tipped +
leaflike +  and semileaflike +
glandular +, pubescent +  and glabrous +
scale-like +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
grooved +  and dichotomous +
not brittle +
spreading +  and erect +
scabrellous +
spreading +  and erect +
whorled +, opposite +  and alternate +
Heermann’s wild buckwheat +
900-1700 m +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 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 />) +
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 washes, and slopes, mixed grassland and chaparral communities, oak and conifer woodlands +
reduced +
capitate +  and subcapitate +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
dense +  and diffuse +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
cymelike +, paniclelike +, racemelike +  and spikelike +
8 cm80 mm <br />0.08 m <br /> (25 cm250 mm <br />0.25 m <br />) +
connate +  and free +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
floccose +  and glabrous +
campanulate +
nonmembranous +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
glabrous +  and slightly tomentose +
spatulate +  and obovate +
0.2cm;0.6cm +
in whorls +, opposite +, alternate +  and rosulate +
deciduous +
bractlike +
pubescent +  and glabrous +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
yellowish white +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
glabrous +  and floccose +
0.1 cm1 mm <br />0.001 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Flowering May–Nov. +
homostylous +  and 3-carpellate +
in War Department [U.S.], Pacif. Railr. Rep. +
, +  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 +
erect +  and spreading +
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 +
chambered +  and solid +
slender +  and stout +
Eriogonum heermannii var. heermannii +
Eriogonum heermannii +
variety +
emarginate +  and entire +
in proximal 1/2 +  and connate +
0 +  and 1/2 +
lobed +  and laciniate +
coriaceous +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
grayish +  and greenish +
erect;spreading;erect;spreading +
floccose +  and glabrous +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +