Eriogonum nudum var. deductum

(Greene) Jepson

Fl. Calif. 1: 420. 1914.

Common names: Reduced wild buckwheat
Endemic
Basionym: Eriogonum deductum Greene Pittonia 5: 71. 1902
Treatment appears in FNA Volume 5. Treatment on page 311. Mentioned on page 310.

Plants 2–3 (–5) dm. Aerial flowering-stems not fistulose, 0.5–1.5 dm, glabrous. Leaves basal; blade 1–2 × 0.3–0.8 (–1) cm, tomentose abaxially, floccose or glabrous adaxially, margins plane. Inflorescences cymose, 5–15 × 5–15 (–20) cm; branches glabrous. Involucres 1 (–2) per cluster, 2.5–3.5 mm, glabrous or sparsely pubescent. Flowers 2–3 mm; perianth white, glabrous. 2n = 40.


Phenology: Flowering Jun–Sep.
Habitat: Granitic flats and slopes, manzanita, buckbrush, and sagebrush communities, scrub oak and conifer woodlands
Elevation: (1100-)1500-3000(-3200) m

Discussion

Variety deductum is the common mid-elevation tetraploid expression of the species, found primarily in the Sierra Nevada, including some desert ranges just to the east. It is not always readily distinguishable from var. nudum. At higher elevations, var. deductum is replaced by var. scapigerum.

Selected References

None.

Lower Taxa

None.

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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 +
(Greene) Jepson +
deciduous +  and persistent +
stipelike +
Eriogonum deductum +
papillate +
awn-tipped +  and simple +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
glabrous +, floccose +  and tomentose +
oblanceolate;elliptic or ovate +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
not awn-tipped +
leaflike +  and semileaflike +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
glandular +, pubescent +  and glabrous +
scale-like +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
not brittle +
spreading +  and erect +
scabrellous +
ridged +, angled +  and round +
spreading +  and erect +
whorled +, opposite +  and alternate +
Reduced wild buckwheat +
Calif. +  and Nev. +
(1100-)1500-3000(-3200) m +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
unisexual +, , +  and bisexual +
not attenuate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
hollow +  and solid +
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 +
Granitic flats and slopes, manzanita, buckbrush, and sagebrush communities, scrub oak and conifer woodlands +
reduced +
capitate +  and subcapitate +
100 cm1,000 mm <br />1 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
15 cm150 mm <br />0.15 m <br /> (20 cm200 mm <br />0.2 m <br />) +
dense +  and diffuse +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
cymelike +, paniclelike +, racemelike +  and spikelike +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
connate +  and free +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
pubescent +  and glabrous +
turbinate +  and turbinate-campanulate +
nonmembranous +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
bractlike +
pubescent +  and glabrous +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
tomentose +  and glabrous +
1 cm10 mm <br />0.01 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Flowering Jun–Sep. +
homostylous +  and 3-carpellate +
, +  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 +
spreading +  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 latifolium subsp. nudum +
chambered +  and solid +
slender +  and stout +
Eriogonum nudum var. deductum +
Eriogonum nudum +
variety +
emarginate +  and entire +
0 +  and 1/2 +
oblong +  and obovate +
coriaceous +
spreading +  and erect +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
grayish +  and greenish +
floccose +  and tomentose +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +