Eriophyllum latilobum

Rydberg in N. L. Britton et al.

in N. L. Britton et al., N. Amer. Fl. 34: 94. 1914.

Common names: San Mateo woolly sunflower
EndemicConservation concern
Treatment appears in FNA Volume 21. Treatment on page 362. Mentioned on page 354, 357, 361.

Perennials or subshrubs, 30–60 (–90) cm. Stems erect (woolly). Leaves (proximal alternate): blades rhombic to obovate, 2–6 cm, 1-pinnately lobed (lobes 3–5, ± triangular), ultimate margins entire, revolute, abaxial faces loosely woolly, adaxial glabrate (distal leaves gradually reduced in size and lobing). Heads 2–5 (–10) in corymbiform arrays. Peduncles mostly 2–7 cm. Involucres broadly campanulate, 5–6 (–7) mm diam. Phyllaries 6–10, distinct (ovate, carinate, apices acute). Ray-florets (6–) 8–10 (–13); laminae yellow, 6–10 (× 4.5–5) mm. Disc-florets 40–75; corollas 3–4.5 mm. Cypselae 2–3 mm; pappi of 4 cuneate to oblanceolate scales 0.3–1 mm alternating with 4 shorter scales (in disc cypselae, disc pappi longer than ray pappi). 2n = 32.


Phenology: Flowering Apr–Jun.
Habitat: Usually shady sites, oak woodlands
Elevation: 100–200 m

Discussion

Of conservation concern.

Eriophyllum latilobum combines characteristics of E. confertiflorum var. confertiflorum, with which it sometimes mingles, and E. lanatum var. arachnoideum. It may have originated by hybridization between them (L. Constance 1937; P. A. Munz 1959).

Selected References

None.

Lower Taxa

None.
... more about "Eriophyllum latilobum"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Dale E. Johnson +  and John S. Mooring +
Rydberg in N. L. Britton et al. +
decurrent +
compound +  and simple +
lobed;rhombic;obovate +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
San Mateo woolly sunflower +
yellow +  and white +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
glabrous +  and hairy +
papillate +
4(-5)-angled +, linear-clavate +  and prismatic flattened or 3-angled +
fertile +  and bisexual +
fertile +  and bisexual +
100–200 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Usually shady sites, oak woodlands +
compound-corymbiform +, corymbiform +, discoid +  and radiate +
disciform +  and discoid +
in loose to tight +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
campanulate +
6mm;10[mm +
4.5mm;5]mm +
sessile +  and petiolate +
papillate +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
2-carpellate +
persistent +
of 1 +  and 12+ aristate +
coroniform +
2 cm20 mm <br />0.02 m <br /> (7 cm70 mm <br />0.07 m <br />) +
Flowering Apr–Jun. +
scarious-margined +
weakly +  and flat +
glabrous +, glabrate +, woolly +  and tomentose +
6 +  and 10 +
in N. L. Britton et al., N. Amer. Fl. +
pitted +  and smooth +
convex;conic +
cuneate +  and oblanceolate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
exalbuminous +
Endemic +  and Conservation concern +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Eriophyllinae +
Eriophyllum latilobum +
Eriophyllum +
species +
campanulate +
60 cm600 mm <br />0.6 m <br /> (90 cm900 mm <br />0.9 m <br />) +
30 cm300 mm <br />0.3 m <br /> (60 cm600 mm <br />0.6 m <br />) +