Heterotheca oregona var. scaberrima

(A. Gray) Semple

Brittonia 39: 383. 1987.

Endemic
Basionym: Chrysopsis oregona var. scaberrima A. Gray in A. Gray et al., Syn. Fl. N. Amer. 1(2): 124. 1884
Treatment appears in FNA Volume 20. Treatment on page 237. Mentioned on page 236.

Stems usually branched distally, densely, coarsely stipitate-glandular. Leaves green to dark green, mid cauline averaging 13.9 × 3.9 mm (9.2–19.4 × 2.2–7.8 mm); branch leaves glabrate to sparsely hispid (fewer than 5 hairs/mm²), moderately to densely coarsely glandular. Outer phyllaries narrowly to broadly ovate. 2n = 18.


Phenology: Flowering Jul–Oct.
Habitat: Sand and gravel soils, gravel bars, along arroyos, flood plains of streams in dry oak woods and grassy hills
Elevation: 100–700 m

Discussion

Variety scaberrima is found in the inner Coast Ranges. Its branches tend to be longer on average; the arrays are thus rather large and open compared to undamaged plants of the other varieties. The smaller leaves of much branched and few-headed specimens of var. rudis can result in a habit similar to that of var. scaberrima. This could create confusion in identity if the ovate outer phyllaries of the latter are overlooked.

Selected References

None.

Lower Taxa

None.

"[" is not declared as a valid unit of measurement for this property."]" is not declared as a valid unit of measurement for this property.

stipitate-glandular +  and hispid +
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
John C. Semple +
(A. Gray) Semple +
decurrent +
Chrysopsis oregona var. scaberrima +
compound +  and simple +
rugulose +  and muricate +
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
linear +  and narrowly lanceolate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
barbellulate +  and barbellate +
not 2-lipped +  and actinomorphic +
1.1 cm11 mm <br />0.011 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
ampliate +
0.85 cm8.5 mm <br />0.0085 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
compressed +  and obconic +
0.035 cm0.35 mm <br />3.5e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
fertile +  and bisexual +
100–700 m +
strigose +, glabrate +  and densely hairy and/or stipitate-glandular +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Sand and gravel soils, gravel bars, along arroyos, flood plains of streams in dry oak woods and grassy hills +
paniculiform +
in corymbiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
tan;rusty brown +
attenuate +  and clavate +
turbino-cylindric +
0.75 cm7.5 mm <br />0.0075 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
green +  and dark green +
cauline +, proximal +  and basal +
erect;spreading +
short-pilose +
lanceolate +, triangular +  and deltate +
serrate +  and entire +
stipitate-glandular +  and strigose +
1.2 cm12 mm <br />0.012 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (4 cm40 mm <br />0.04 m <br />) +
13.9 cm139 mm <br />0.139 m <br /> (?) +
3.9 cm39 mm <br />0.039 m <br /> (?) +
2-carpellate +
in 3 +  and 4 series +
stipitate-glandular +  and hispid +
0.5 cm5 mm <br />0.005 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Flowering Jul–Oct. +
lanceolate +  and linear-lanceolate +
ovate-oblanceolate +
bearing subulate enations +, hairy +  and bristly +
subulate;convex +
5 +  and 10 +
3 +  and 40 +
linear +  and linear-lanceolate or triangular +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
exalbuminous +
ascending +  and erect +
appendaged +  and truncate +
papillate +  and smooth +
Chrysopsis oregona +
Heterotheca oregona var. scaberrima +
Heterotheca oregona +
variety +
short-pilose +
60 cm600 mm <br />0.6 m <br /> (200 cm2,000 mm <br />2 m <br />) +
15 cm150 mm <br />0.15 m <br /> (105 cm1,050 mm <br />1.05 m <br />) +
tree +, shrub +  and subshrub +