Herrickia glauca var. pulchra

(S. F. Blake) Brouillet

Sida 21: 897. 2004.

Common names: Beautiful aster
Endemic
Basionyms: Aster glaucodes subsp. pulcher S. F. Blake Proc. Biol. Soc. Wash. 35: 174. 1922
Synonyms: Aster wasatchensis var. pulcher (S. F. Blake) S. L. Welsh Eurybia pulchra (S. F. Blake) G. L. Nesom Eurybia glauca var. pulchra (S. F. Blake) Brouillet
Treatment appears in FNA Volume 20. Treatment on page 363. Mentioned on page 364.

Plants 40–80 cm, short-stipitate-glandular. Stems 1–3+, glabrous or glabrescent proximally, ± densely stipitate-glandular distally. Leaf-blades ovate, elliptic, or obovate-oblong to lanceolate, 20–90 × 5–21 mm, faces usually glabrous (proximal), sometimes sparsely stipitate-glandular or abaxial midnerves stipitate-glandular (distal often). Heads 10–30+. Peduncles ± densely stipitate-glandular; bracts 0–2, foliaceous, densely stipitate-glandular. Involucres campanulate to cylindro campanulate, 6.5–9.5 mm. Phyllaries 26–40, ± densely stipitate-glandular (outer, green zones) or eglandular (inner). Ray-florets 10–14; laminae 11.5–16 × 2.2–2.9 mm. Disc-florets 29–40; corollas 7–8.5 mm, lobes 1–1.8 mm.


Phenology: Flowering Aug–Oct.
Habitat: Salt desert shrub, sagebrush, pinyon-juniper and ponderosa pine communities
Elevation: 800–2200 m

Discussion

Of conservation concern.

Variety pulchra is known only from the San Juan River basin (Washington and Kane counties, Utah; Coconino County, Arizona). It is of conservation concern in Utah. Recently, S. L. Welsh (Welsh et al. 2003) transferred var. pulchra from Aster glaucodes (syn. H. glauca) to A. wasatchensis on the grounds of its glandularity and “general conformation,” while acknowledging the glaucous foliage shared with Herrickia glauca. Yet the variety does not share critical features of the involucre with H. wasatchensis, and the glandularity is most likely a shared primitive feature within the group and is therefore not indicative of a particular relationship within the group. Distribution and morphology strongly suggest the relationships reported here. Alternately, var. pulchra may represent a distinct species, as hypothesized by G. L. Nesom (1994b).

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 +
not tailed +, rounded +  and obtuse +
purplish;hyaline +
distinct +
villoso-ciliolate +
reduced +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +  and open +
indeterminate +  and determinate +
Luc Brouillet +
(S. F. Blake) Brouillet +
cuneate +
indurate +
Aster glaucodes subsp. pulcher +
4 cm40 mm <br />0.04 m <br /> (12 cm120 mm <br />0.12 m <br />) +
elliptic-oblong;lanceolate +
5mm;25mm +
rugulose +  and muricate +
stipitate-glandular +
0.64 cm6.4 mm <br />0.0064 m <br /> (0.72 cm7.2 mm <br />0.0072 m <br />) +
clavate +  and attenuate +
Beautiful aster +
not 2-lipped +  and actinomorphic +
yellow turning reddish purple +  and pale lavender +
0.8 cm8 mm <br />0.008 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
ampliate +
0.7 cm7 mm <br />0.007 m <br /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
tan +  and stramineous +
compressed +  and fusiform +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +  and Utah. +
800–2200 m +
stipitate-glandular +  and glabrous +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Salt desert shrub, sagebrush, pinyon-juniper and ponderosa pine communities +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
campanulate;campanulate;cylindro +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.95 cm9.5 mm <br />0.0095 m <br />) +
11.5mm;16mm +
2.2mm;2.9mm +
2 cm20 mm <br />0.02 m <br /> (9 cm90 mm <br />0.09 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
petiolate +  and sessile +
lanceolate +
purplish +  and hyaline +
villoso-ciliolate +, glabrous +  and villose-ciliate +
scabridulous +
reduced +
purplish +  and hyaline +
villoso-ciliolate +
2-carpellate +
persistent +
stipitate-glandular +
scabridulous +
Flowering Aug–Oct. +
stipitate-glandular +
rounded ovate or oblong +  and lanceolate +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
7 +  and 10 +
exalbuminous +
straight +
1 +  and 3 +
scabridulous +
appendaged +  and truncate +
papillate +  and smooth +
Aster wasatchensis var. pulcher +, Eurybia pulchra +  and Eurybia glauca var. pulchra +
Herrickia glauca var. pulchra +
Herrickia glauca +
variety +
cylindric +
ampliate +
cespitose +  and colonial +
stipitate-glandular +  and glaucous +
20 cm200 mm <br />0.2 m <br /> (70 cm700 mm <br />0.7 m <br />) +
short-stipitate-glandular +
acuminate +, acute +  and obtuse +