Erigeron breweri var. porphyreticus

(M. E. Jones) Cronquist

Brittonia 6: 283. 1947.

Endemic
Basionym: Erigeron porphyreticus M. E. Jones Contr. W. Bot. 8: 33. 1898
Treatment appears in FNA Volume 20. Treatment on page 317.

Plants 20–30 cm; woody roots and relatively slender caudex branches. Stems ascending-erect, often wiry and brittle. Phyllaries hispido-hirsute (hairs translucent, spreading, stiff, relatively thick-based), sometimes slightly glandular.


Phenology: Flowering May–Aug(–Sep).
Habitat: Open, rocky sites, commonly crevices and ledges, sagebrush, pinyon-juniper, ponderosa pine
Elevation: (1200–)1300–2700(–3100) m

Discussion

Variety porphyreticus is similar to var. breweri in the production of relatively slender, rhizomelike proximal caudex branches, spreading-deflexed stem vestiture, and blue ray corollas; var. porphyreticus differs in its wirier stems, generally greater development of flowering branches, larger heads, and hirsuto-hispid phyllaries with broad, stramineous-indurate margins and lack of green apical patches.

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 +
(M. E. Jones) Cronquist +
decurrent +
Erigeron porphyreticus +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
narrowly oblong-lanceolate;narrowly obovate +
2mm;5mm +
rugulose +  and muricate +
leafless +  and rhizomelike +
slender +
not 2-lipped +  and actinomorphic +
blue +, pink +  and white +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
subterete +, oblong +  and oblong-obovoid compressed +
fertile +  and bisexual +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
fertile +  and bisexual +
Calif. +  and Nev. +
(1200–)1300–2700(–3100) m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open, rocky sites, commonly crevices and ledges, sagebrush, pinyon-juniper, ponderosa pine +
disciform +  and discoid +
in loose , corymbiform or paniculiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
turbinate;hemispheric +
0.9 cm9 mm <br />0.009 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
petiolate +  and sessile +
erect;spreading +
deltate +
Not (?) +  and Scarious (?) +
2-carpellate +
Flowering May–Aug(–Sep). +
3-nerved +  and 1-nerved +
hispido-hirsute +
narrowly elliptic +  and linear-lanceolate +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
prostrate +  and procumbent +
ascending-erect +
appendaged +  and truncate +
papillate +  and smooth +
Achaetogeron +  and Trimorpha +
Erigeron breweri var. porphyreticus +
Erigeron breweri +
variety +
inflated +  and tubular +
90 cm900 mm <br />0.9 m <br /> (100 cm1,000 mm <br />1 m <br />) +
7 cm70 mm <br />0.07 m <br /> (75 cm750 mm <br />0.75 m <br />) +