Eriogonum giganteum var. formosum

K. Brandegee

Erythea 5: 79. 1897.

Common names: San Clemente Island’s St. Catherine’s-lace
Endemic
Synonyms: Eriogonum giganteum subsp. formosum (K. Brandegee) P. H. Raven
Treatment appears in FNA Volume 5. Treatment on page 302. Mentioned on page 301.

Plants 3–15 (–25) dm. Aerial flowering-stems 2–4 dm, tomentose to glabrate. Leaves: petiole (1–) 2–4 cm; blade lanceolate to narrowly oblong, 5–8 × 1–2 cm. Inflorescences open, 10–50 cm wide. Involucres 4–5 mm. Flowers 3–4 mm. Achenes 3–3.5 mm.


Phenology: Flowering May–Sep.
Habitat: Rocky cliffs, slopes, and ridges, coastal scrub communities, oak woodlands
Elevation: 0-300 m

Discussion

Of conservation concern.

Variety formosum is known only from San Clemente Island, Los Angeles County. Extensive sheep grazing and military operations harmed much of the population prior to the 1960s. Reduction of the sheep population and greater concern for the local environment have greatly improved the ecology of the island and prospects for the long-term survival of this species. The variety is cultivated, and established populations occasionally are found on the mainland of southern California.

Selected References

None.

Lower Taxa

None.

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included +  and exserted +
3-gonous +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
acute;obtuse or rounded +
James L. Reveal +
K. Brandegee +
deciduous +  and persistent +
stipelike +
Undefined subg. Eucycla +
papillate +
awn-tipped +  and simple +
7 cm70 mm <br />0.07 m <br /> (10 cm100 mm <br />0.1 m <br />) +
greenish +  and cinereous +
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
glabrate +  and white-tomentose +
lanceolate;narrowly oblong +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
not awn-tipped +
leaflike +  and semileaflike +
glandular +, pubescent +  and glabrous +
oblanceolate +  and elliptic +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
not brittle +
spreading +  and erect +
tomentose +  and floccose or glabrate +
scabrellous +
ridged +, angled +  and round +
spreading +  and erect +
whorled +, opposite +  and alternate +
San Clemente Island’s St. Catherine’s-lace +
0-300 m +
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 +
Rocky cliffs, slopes, and ridges, coastal scrub communities, oak woodlands +
reduced +
capitate +  and subcapitate +
50 cm500 mm <br />0.5 m <br /> (80 cm800 mm <br />0.8 m <br />) +
dense +  and diffuse +
5 cm50 mm <br />0.05 m <br /> (30 cm300 mm <br />0.3 m <br />) +
cymelike +, paniclelike +, racemelike +  and spikelike +
10 cm100 mm <br />0.1 m <br /> (50 cm500 mm <br />0.5 m <br />) +
connate +  and free +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
campanulate +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
nonmembranous +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
bractlike +
pubescent +  and glabrous +
crisped +  and plane +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
white-villous +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering May–Sep. +
homostylous +  and 3-carpellate +
, +  and solid +
slender;stout +
persistent +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 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 giganteum subsp. formosum +
chambered +  and solid +
slender +  and stout +
Eriogonum giganteum var. formosum +
Eriogonum giganteum +
variety +
emarginate +  and entire +
0 +  and 1/2 +
obovate +
coriaceous +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
grayish +  and reddish +
tomentose +  and floccose or glabrate +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +