Perityle rupestris var. albiflora

A. M. Powell

Sida 3: 180. 1967.

Common names: White leafy rock daisy
Endemic
Treatment appears in FNA Volume 21. Treatment on page 319. Mentioned on page 320.
Revision as of 22:48, 29 July 2020 by imported>Volume Importer
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Disc-florets 8–18, corollas white. Pappi of (16–) 18–25 bristles 1–2 mm. 2n = 34, 68, 170.


Phenology: Flowering spring–fall.
Habitat: Crevices of igneous bluffs and boulders
Elevation: 1200–1900 m

Discussion

Variety albiflora is found throughout much of Brewster County, eastern Presidio County, and extreme southern Jeff Davis County.

Selected References

None.

Lower Taxa

None.
170 +, 68 +  and 34 +
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Sharon C. Yarborough +  and A. Michael Powell +
A. M. Powell +
decurrent +
Laphamia rupestris +
compound +  and simple +
1.7 cm17 mm <br />0.017 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
1.7 cm17 mm <br />0.017 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
subreniform;subdeltate;subreniform;subdeltate;subcordate;ovate +
0.5 cm5 mm <br />0.005 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
White leafy rock daisy +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
angled +, rounded +, oblong +  and narrowly oblanceolate partially flattened +
fertile +  and bisexual +
fertile +  and bisexual +
1200–1900 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Crevices of igneous bluffs and boulders +
discoid +  and radiate +
in corymbiform arrays +  and singly +
indeterminate +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
homogamous +  and heterogamous +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
campanulate;subfunnelform;campanulate;subfunnelform;subcylindric +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
sessile +  and petiolate +
alternate +  and opposite +
deltate +
short-hairy +  and glabrous +
serrate-lobed +  and serrate +
calloused +
2-carpellate +
persistent +
1.3 cm13 mm <br />0.013 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Flowering spring–fall. +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
8 +  and 10 +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
erect +  and pendent +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Pappothrix rupestris +
Perityle rupestris var. albiflora +
Perityle rupestris +
variety +
tubular +  and subfunnelform +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
lobed +, toothed +  and entire +
25 cm250 mm <br />0.25 m <br /> (35 cm350 mm <br />0.35 m <br />) +
puberulent +, pilose +  and hirsute +