Encelia resinifera

C. Clark

Aliso 17: 201. 1998.

Endemic
Basionym: Encelia frutescens var. resinosa M. E. Jones ex S. F. Blake Proc. Amer. Acad. Arts 49: 364. 1913,
Synonyms: Encelia resinifera subsp. tenuifolia C. Clark
Treatment appears in FNA Volume 21. Treatment on page 121. Mentioned on page 119.

Shrubs, 40–150 cm. Stems with slender branches from trunks, glabrate, developing fissured barks. Leaves cauline; petioles 2–6 mm; blades green, lanceolate to ovate, 10–25 mm, apices usually acute, sometimes obtuse, faces strigose, glanddotted. Heads borne singly. Peduncles strigose to glabrate. Involucres 5–11 mm. Phyllaries lanceolate. Ray-florets 8–13; corolla laminae 8–12 mm. Disc corollas yellow, 5–6 mm. Cypselae 5–8 mm; pappi 0.2n = 36.


Phenology: Flowering May–Jul, Sep.
Habitat: Sandstone-derived soils
Elevation: 1100–1700 m

Discussion

Plants of Encelia resinifera from the Grand Canyon of the Colorado with lengths of leaf blades and ray laminae at least three times their widths are subsp. tenuifolia.

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Encelia resinifera"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +, corymbiform +  and cymiform +
indeterminate +  and determinate +
Curtis Clark +
C. Clark +
bristlelike +
coroniform +
fissured +
cuneate +
Encelia frutescens var. resinosa +
compound +  and simple +
lanceolate;ovate +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
brown-purple +  and yellow +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
hairy +  and glabrous +
obovate +  and cuneate +
fertile +  and bisexual +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
fertile +  and bisexual +
Ariz. +  and Utah. +
1100–1700 m +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Sandstone-derived soils +
discoid +  and radiate +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
hemispheric +
0.5 cm5 mm <br />0.005 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
triangular +
2-carpellate +
persistent +
strigose +  and glabrate +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Flowering May–Jul, Sep. +
18 +  and 30 +
unequal +  and subequal +
sterile +  and fertile +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Encelia resinifera subsp. tenuifolia +
Encelia resinifera +
species +
expanded +
cylindric +
shorter to longer than campanulate +
toothed +  and entire +