familyAsteraceae
tribeAsteraceae tribe Astereae
genusErigeron
speciesErigeron saxatilis

Erigeron saxatilis

G. L. Nesom

Phytologia 69: 233. 1990.

Guy L. Nesom
Common names: Rock fleabane
Treatment appears in FNA Volume 20. Treatment on page 309. Mentioned on page 272.

Perennials, 3–5 cm; taprooted, caudex branches relatively thick, short, retaining old leaf-bases. Stems erect to ascending, glabrous, eglandular. Leaves basal (persistent) and cauline (petioles, when distinct, about equaling blades); basal blades linear-oblanceolate to slightly spatulate, 10–30 × 0.5–2 (–3) mm, cauline similar or slightly reduced distally, margins entire, faces sparsely strigose or glabrous, eglandular. Heads 1. Involucres 2.5–3.5 × 6–7 mm. Phyllaries in 3–4 series (purplish, midveins greenish yellow, not swollen), sparsely strigose or glabrous, eglandular. Ray-florets 20–29; corollas white, drying white to slightly lavender, 5.5–7 mm, laminae reflexing. Disc corollas 2.1–3 mm (veins not orange-resinous). Cypselae 1.3–1.6 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 9–13 (–15) bristles.


Phenology: Flowering Apr–Jul(–Oct).
Habitat: Crevices and ledges in canyons above Mogollon Rim
Elevation: 1300–2600 m

Distribution

V20-674-distribution-map.gif

Ariz.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Erigeron saxatilis"
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Anther base shape
not tailed +, rounded +  and obtuse +
Anther dehiscence
introrse +
Anther fusion
connate +
Apex fusion
distinct +
Apex growth form or texture
herbaceous +
Apex size
subequal +
Apex texture
scarious +
Apical appendage quantity
0 +
Apical appendage shape
usually triangular +  and linear +
Appendage pubescence
hirsute +
Appendage relief
papillate +
Appendage shape
usually deltate +  and lanceolate +
Array architecture
paniculiform +, corymbiform +  and loose +
Array development
indeterminate +  and determinate +
Author
Guy L. Nesom +
Authority
G. L. Nesom +
Band architecture
continuous +
Band quantity
1 +
Basal blade atypical width
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Basal blade length
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Basal blade shape
linear-oblanceolate +  and slightly spatulate +
Basal blade width
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Base shape
decurrent +
Blade architecture
1-nerved +
Blade shape
linear;lanceolate oblanceolate or spatulate +
Body architecture or pubescence or relief
smooth +
Body architecture or shape
ribbed +
Body relief
rugulose +  and muricate +
Branch arrangement or course or shape
linear +
Branch structure in adjective form
stigmatic +
Bristle architecture
barbellate +
Bristle atypical quantity
13;15 +
Bristle pappus duration
persistent +
Bristle quantity
9;13 +
Calyculus presence
absent +
Caudex branch height or length or size
short +
Caudex branch width
thick +
Cauline blade size
reduced +
Common name
Rock fleabane +
Corolla architecture
not 2-lipped +  and actinomorphic +
Corolla coloration
white +  and slightly lavender +
Corolla presence
absent +
Corolla some measurement
0.55 cm5.5 mm <br />0.0055 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Cypsela architecture
2-nerved +
Cypsela architecture or shape
beaked +, 2-ribbed +  and 5-ribbed +
Cypsela growth form
dimorphic +
Cypsela shape
subterete +, oblong +  and oblong-obovoid compressed +
Cypsela some measurement
1.3mm;1.6mm +
Disc-floret quantity
25 (450) +
Disc-floret reproduction
fertile +  and bisexual +
Disc corolla some measurement
0.21 cm2.1 mm <br />0.0021 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Disc cypsela presence
absent +
Disc floret architecture
staminate +
Disc floret reproduction
fertile +  and bisexual +
Distribution
Ariz. +
Elevation
1300–2600 m +
Embryo course
straight +
Face architecture
eglandular +
Face architecture or function or pubescence
glandular +
Face pubescence
strigose +  and glabrous +
Filament fusion
distinct +
Floret architecture
pistillate +, staminate +  and neuter +
Floret atypical quantity
5;15 +
Floret position
proximal +
Floret quantity
1;5 +
Floret reproduction
bisexual +
Fruit architecture
winged +  and beaked +
Fruit condition or texture
dry +
Fruit density
dispersed +
Habitat
Crevices and ledges in canyons above Mogollon Rim +
Head architecture or arrangement
radiate +
Head architecture or shape
disciform +  and discoid +
Head arrangement
in loose , corymbiform or paniculiform arrays +  and singly +
Head development
indeterminate +
Head quantity
1 +
Head reproduction
heterogamous +  and homogamous +
Illustration copyright
Flora of North America Association +
Illustrator
Linny Heagy +
Individual head architecture
each +  and sessile +
Involucre diameter
0.5 cm5 mm <br />0.005 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Involucre length
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Involucre position relational
surrounding +
Involucre shape
turbinate;hemispheric +
Involucre width
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Lamina orientation
reflexing +
Leaf-base life cycle
old +
Leaf architecture
petiolate +  and sessile +
Leaf arrangement
alternate +
Leaf position
cauline +  and basal +
Line quantity
2 +
Lobe atypical quantity
4 (5) +
Lobe orientation
erect;spreading +
Lobe quantity
5 (?) +
Lobe shape
deltate +
Margin architecture or shape
entire +
Margin texture
not +  and scarious +
Number of lower taxa
0 +
Ovary architecture
2-carpellate +
Ovary architecture or structure in adjective form
1-locular +
Ovary position
inferior +
Ovule fixation
attached +
Ovule orientation
anatropous +
Ovule quantity
1 +
Pericarp fragility
tough +
Pericarp width
thick +
Peripheral floret architecture
pistillate +
Peripheral floret presence
absent +
Peripheral floret quantity
50 (200) +
Petal fusion
connate +
Phenology
Flowering Apr–Jul(–Oct). +
Phyllarie architecture
eglandular +
Phyllarie atypical quantity
125 (150) +
Phyllarie duration
persistent +
Phyllarie fusion
distinct +
Phyllarie life cycle
falling +
Phyllarie pubescence
glabrous +  and strigose +
Phyllarie quantity
30 (125) +
Phyllarie shape
narrowly elliptic +  and linear-lanceolate +
Phyllarie size
unequal +
Phyllarie texture
Herbaceous (Chartaceous or scarious) +
Phyllarie variability
equal +
Publication title
Phytologia +
Publication year
1990 +
Ray-floret architecture
pistillate +
Ray-floret presence
absent +
Ray-floret quantity
20 (29) +
Ray-floret reproduction
fertile +
Receptacle architecture
epaleate +
Receptacle pubescence
bearing subulate enations +, hairy +  and bristly +
Receptacle relief
pitted +
Receptacle shape
flat;conic +
Reference
None +
Root texture
fibrous +
Seed architecture
exalbuminous +
Seed quantity
1 +
Sepal variability
modifed +
Series atypical quantity
1 (2) +
Series quantity
3;4 +
Seta pappus atypical quantity
40 (50) +
Seta pappus coloration
stramineous +
Seta pappus duration
persistent +
Seta pappus fusion
connate +
Seta pappus life cycle
falling +
Seta pappus quantity
5 (40) +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V20 674.xml +
Stamen arrangement
alternate +
Stamen atypical quantity
4 (5) +
Stamen quantity
5 +
Stem architecture
eglandular +
Stem architecture or function or pubescence
glandular +
Stem growth form or orientation
prostrate +  and decumbent +
Stem orientation
erect +  and ascending +
Stem pubescence
glabrous +
Style-branch appendage shape
deltate +
Style-branch architecture
appendaged +  and truncate +
Style architecture
2-branched +
Style pubescence
glabrous +
Style quantity
1 +
Style relief
papillate +  and smooth +
Synonyms
Achaetogeron +  and Trimorpha +
Taxon family
Asteraceae +
Taxon name
Erigeron saxatilis +
Taxon parent
Erigeron +
Taxon rank
species +
Throat shape
inflated +  and tubular +
Throat texture
indurate +
Tube height or length or size
shorter +
Volume
Volume 20 +
Whole-organism architecture
taprooted +
Whole-organism atypical some measurement
90 cm900 mm <br />0.9 m <br /> (100 cm1,000 mm <br />1 m <br />) +
Whole-organism duration
perennial +
Whole-organism some measurement
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Whole organism growth form
tree +, shrub +  and subshrub +
X chromosome quantity
9 +