Erigeron petrophilus var. viscidulus

(A. Gray) G. L. Nesom

Phytologia 72: 198. 1992.

Endemic
Basionym: Erigeron inornatus var. viscidulus A. Gray in A. Gray et al., Syn. Fl. N. Amer. 1(2): 215. 1884
Treatment appears in FNA Volume 20. Treatment on page 315. Mentioned on page 316.

Stems and leaves eglandular or obscurely glandular, nonglandular hairs mostly stiff, straight or curved. Phyllary apices not purplish or differently colored from proximal portion.


Phenology: Flowering Jul–Sep.
Habitat: Open rocky slopes, ledges, talus, sometimes on serpentine
Elevation: (1200–)1500–2700 m

Discussion

The cauline vestiture of var. viscidulus is variable, of stiff hairs primarily spreading to slightly deflexed, varying to antrorsely appressed (perhaps suggesting introgression from Erigeron inornatus). Apparent intergrades with E. reductus var. reductus occur in Trinity County.

Selected References

None.

Lower Taxa

None.
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Guy L. Nesom +
(A. Gray) G. L. Nesom +
decurrent +
Erigeron inornatus var. viscidulus +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
narrowly oblong;oblanceolate +
equal-sized +
1mm;5mm +
rugulose +  and muricate +
not 2-lipped +  and actinomorphic +
yellow +, usually white +  and bluish or purplish +
beaked +, 2-ribbed +  and 5-ribbed +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
subterete +, oblong +  and oblong-obovoid compressed +
fertile +  and bisexual +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
fertile +  and bisexual +
(1200–)1500–2700 m +
glandular +  and eglandular +
villous +  and hirsuto-villous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open rocky slopes, ledges, talus, sometimes on serpentine +
curved +  and straight +
disciform +  and discoid +
in loose , corymbiform or paniculiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.7 cm7 mm <br />0.007 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
turbinate;hemispheric +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
glandular +  and eglandular +
erect;spreading +
deltate +
Not (?) +  and Scarious (?) +
2-carpellate +
Flowering Jul–Sep. +
3-nerved +  and 1-nerved +
narrowly elliptic +  and linear-lanceolate +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
glandular +  and eglandular +
prostrate +  and decumbent +
erect +  and decumbent-ascending +
appendaged +  and truncate +
papillate +  and smooth +
Achaetogeron +  and Trimorpha +
Erigeron petrophilus var. viscidulus +
Erigeron petrophilus +
variety +
inflated +  and tubular +
20 cm200 mm <br />0.2 m <br /> (30 cm300 mm <br />0.3 m <br />) +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
tree +, shrub +  and subshrub +