Erigeron sionis var. trilobatus
Rhodora 95: 398. 1993.
EndemicConservation concern
Basionym: Erigeron flagellaris var. trilobatus Maguire ex Cronquist Brittonia 6: 258. 1947
Synonyms: Erigeron proselyticus G. L. Nesom
Basal leaves: blades (2–) 3–5 (–11) mm wide, margins usually entire or dentate, rarely deeply lobed. Ray corollas drying pink to dark blue. 2n = 18.
Phenology: Flowering Jul–Sep.
Habitat: Limestone cliff bases and faces, crevices, ledges, shelves, soil accumulations, talus, limestone gravel, lakeshores, bristlecone pine, spruce-fir-aspen, aspen, limber pine, Engelmann spruce
Elevation: 2200–3100 m
Discussion
Of conservation concern.
The leaves of var. sionis tend to be narrower and more deeply lobed than those of var. trilobatus; morphologic intermediacy makes these plants hard to separate even at varietal rank. Differences in habitat and an essentially allopatric distribution, however, suggest that two evolutionary entities are present.
Selected References
None.
Lower Taxa
None.
... more about "Erigeron sionis var. trilobatus"
introrse +
connate +
distinct +
herbaceous +
scarious +
hirsute +
papillate +
continuous +
decurrent +
1-nerved +
linear;lanceolate oblanceolate or spatulate +
ribbed +
persistent +
stoloniform +
stigmatic +
lignescent +
barbellate +
persistent +
7;15 +
absent +
reduced +
absent +
2-nerved +
dimorphic +
1mm;1.5mm +
absent +
staminate +
Utah. +
straight +
eglandular +
distinct +
proximal +
1;5 +
bisexual +
dispersed +
Limestone cliff bases and faces, crevices, ledges, shelves, soil accumulations, talus, limestone gravel, lakeshores, bristlecone pine, spruce-fir-aspen, aspen, limber pine, Engelmann spruce +
indeterminate +
1;4 +
surrounding +
turbinate;hemispheric +
reflexing +
not coiling +
alternate +
erect;spreading +
deltate +
mixed +
lobed +
2-carpellate +
inferior +
attached +
anatropous +
tough +
thick +
pistillate +
absent +
connate +
persistent +
distinct +
falling +
unequal +
equal +
Rhodora +
1993 +
pistillate +
absent +
fertile +
epaleate +
pitted +
flat;conic +
fibrous +
exalbuminous +
modifed +
3;5 +
stramineous +
persistent +
connate +
falling +
alternate +
deltate +
2-branched +
glabrous +
Erigeron sionis var. trilobatus +
Erigeron sionis +
variety +
indurate +
shorter +
perennial +