Eriogonum umbellatum var. smallianum

(A. Heller) S. Stokes

Eriogonum, 113. 1936.

Common names: Small’s sulphur flower
Endemic
Basionym: Eriogonum smallianum A. Heller Bull. S. Calif. Acad. Sci. 2: 68. 1903
Treatment appears in FNA Volume 5. Treatment on page 349. Mentioned on page 336, 337.

Herbs, spreading mats, 0.8–2 (–2.5) × 3–5 dm. Aerial flowering-stems erect, 0.5–1.5 dm, tomentose, without one or more leaflike bracts ca. midlength. Leaves in rather compact rosettes; blade elliptic, 0.5–1.5 × 0.3–0.7 cm, white-lanate to tomentose abaxially, thinly tomentose to floccose and greenish adaxially, margins plane. Inflorescences compound-umbellate, branched 1–3 times; branches tomentose, without a whorl of bracts ca. midlength; involucral tubes 2–3 mm, lobes 1–3 mm. Flowers 4–6 mm; perianth bright-yellow.


Phenology: Flowering Jul–Sep.
Habitat: Sandy to gravelly, mostly serpentine flats and slopes, oak and montane conifer woodlands
Elevation: 700-2000 m

Discussion

Variety smallianum occurs in the North Coast Ranges (Glenn, Lake, Mendocino, Sonoma, Tehama, and Trinity counties) and is the counterpart to var. bahiiforme. It too is widely scattered in small, localized populations.

Selected References

None.

Lower Taxa

None.

"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."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 +
James L. Reveal +
(A. Heller) S. Stokes +
deciduous +  and persistent +
stipelike +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Eriogonum smallianum +
awn-tipped +  and simple +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
white-lanate +  and tomentose abaxially +
oblanceolate;elliptic +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
not awn-tipped +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
midlength +
glandular +, pubescent +  and glabrous +
3;several +
scale-like +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
grooved +, disarticulating +  and dichotomous +
not brittle +
scabrellous +
spreading +  and erect +
whorled +, opposite +  and alternate +
Small’s sulphur flower +
700-2000 m +
curved +  and straight +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
unisexual +  and bisexual +
attenuate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 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 +
Sandy to gravelly, mostly serpentine flats and slopes, oak and montane conifer woodlands +
1-3 times +
branched +  and compound-umbellate +
capitate +  and subcapitate +
3 cm30 mm <br />0.03 m <br /> (25 cm250 mm <br />0.25 m <br />) +
cymelike +, paniclelike +, racemelike +  and spikelike +
2 cm20 mm <br />0.02 m <br /> (18 cm180 mm <br />0.18 m <br />) +
connate +  and free +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
tomentose +  and thinly floccose or glabrous +
turbinate +  and campanulate +
nonmembranous +
0.15 cm1.5 mm <br />0.0015 m <br /> (1 cm10 mm <br />0.01 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
cauline +  and basal +
bractlike +
pubescent +  and glabrous +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
bright-yellow +
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 />) +
mostly tomentose +  and floccose or glabrous +
0.1 cm1 mm <br />0.001 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering Jul–Sep. +
homostylous +  and 3-carpellate +
0.3 cm3 mm <br />0.003 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
, +  and solid +
slender;stout +
persistent +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 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 +
chambered +  and solid +
slender +  and stout +
Eriogonum umbellatum var. smallianum +
Eriogonum umbellatum +
variety +
emarginate +  and entire +
1/4 +  and 1/3 +
usually spatulate +  and obovate +
coriaceous +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
involucral +
persistent +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
membranous +
pubescent +  and glabrous +
sericeous +, lanate +  and tomentose floccose or glabrous +
dioecious +, polygamodioecious +, synoecious +  and polycarpic +
annual +, biennial +  and perennial +
tomentose +  and glabrous +
midlength +
3 +, 2 +  and 1 +