Eriogonum subg. Eriogonum

Treatment appears in FNA Volume 5. Treatment on page 329. Mentioned on page 223.
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Herbs, erect, polycarpic perennials, tomentose or glabrous; taproot woody. Stems erect, tomentose to floccose or glabrous; caudex stems absent; aerial flowering-stems erect, slender to stout, solid, not hollow, fistulose, or disarticulating in ringlike segments proximally, arising directly from the root. Leaves usually persistent, basal or cauline, 1 per node or fasciculate; blade tomentose abaxially. Inflorescences terminal, cymose, open; branches mostly dichotomous, not disarticulating into ringlike segments, round and smooth or finely striated or grooved, tomentose; bracts 3 (–5), connate basally, scalelike or leaflike. Peduncles absent or erect and stout. Involucres 1 per node, not appressed to the inflorescence branches, turbinate to campanulate; teeth 5, erect, apex acute. Flowers attenuate at base, with stipelike base 0.5–7 mm; perianth cream to light tan or yellow, densely pubescent abaxially, glabrous adaxially; tepals connate proximally 1/4–1/3 their length, monomorphic or dimorphic; stamens exserted; filaments glabrous or densely pilose. Achenes brown, not winged, 3-gonous, glabrous or pubescent. Seeds: embryo straight.

Discussion

Species 2 (2 in the flora).

Selected References

None.

Key

1 Tepals monomorphic; perianths densely white- or silvery-tomentose abaxially; filaments glabrous; Arkansas, Kansas, New Mexico, Oklahoma, and Texas e to Alabama, Florida, Kentucky, and Tennessee Eriogonum longifolium
1 Tepals dimorphic; perianths densely tannish- to rusty-lanate abaxially; filaments pilose; se Alabama, Florida, Georgia, and South Carolina Eriogonum tomentosum

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

... more about "Eriogonum subg. Eriogonum"
included +  and exserted +
pubescent +  and glabrous +
3-gonous +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
James L. Reveal +
Michaux +
deciduous +  and persistent +
stipelike +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
awn-tipped +  and simple +
linear;orbiculate +
not awn-tipped +
glandular +, pubescent +  and glabrous +
leaflike +  and scale-like +
grooved +, not disarticulating +  and dichotomous +
not brittle +
scabrellous +
spreading +  and erect +
whorled +, opposite +  and alternate +
United States +
pilose +  and glabrous +
unisexual +, , +  and bisexual +
attenuate +
disarticulating +, not hollow +  and solid +
decumbent to erect +  and prostrate +
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 +
open +  and cymose +
capitate +  and subcapitate +
cymelike +, paniclelike +, racemelike +  and spikelike +
connate +  and free +
turbinate +  and campanulate +
nonmembranous +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
cauline +  and basal +
bractlike +
pubescent +  and glabrous +
lobed +, undulate +, crisped +, crenulate +  and entire +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
cream;light tan or yellow +
glabrous +  and pubescent +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
homostylous +  and 3-carpellate +
Fl. Bor.-Amer. +
, +  and solid +
slender;stout +
persistent +
decumbent to erect +  and prostrate +
tomentose +  and floccose or 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 subg. Eriogonum +
Eriogonum +
subgenus +
emarginate +  and entire +
1/4 +  and 1/3 +
lobed +  and laciniate +
coriaceous +
persistent +
membranous +
pubescent +  and glabrous +
glabrous +  and tomentose +
annual +, biennial +  and perennial +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +