Biorepository Data Portal
Home
Search
Sample search
Map search
Dynamic Species List
Taxonomic Explorer
Images
Image Browser
Image Search
Datasets
Research Datasets and Special Collections
Carabidae Checklists with Keys
Mosquito Checklists with Keys
Checklist: Research Sites - Invertebrates
Checklist: Research Sites - Plants
Checklist: Research Sites - Vertebrates
Sample Use
Sample Use Policy
Sample Request
Sample Archival Request
Dataset Publishing
How to Cite
Additional Information
Biorepository Staff
About NEON
NEON Data Portal
ASU Biocollections
About Symbiota
Getting Started
Login
New Account
Sitemap
Erigeron sivinskii
G.L. Nesom
No occurrences found
Family:
Asteraceae
Sivinsk's erigeron
Robert Sivinski
FNA
Resources
Guy L. Nesom in Flora of North America (vol. 20)
Perennials,
5-8 cm; taprooted, caudex branches relatively short, thick, retaining old leaf bases.
Stems
erect (greenish), closely strigose (hairs white, equal), eglan-dular.
Leaves
basal (persistent, persistent portions relatively short and broad) and cauline (petioles erect, greenish, bases broadened or not, not thickened and whitish-indurate); blades linear, 12-30 × 0.5-0.8 mm, cauline unreduced for ±
1
/ 2 stems, margins entire, eciliate, faces sparsely strigose, eglandular.
Heads
1.
Involucres
5-6 × (8-)10-14 mm.
Phyllaries
in 2-3 series (greenish, relatively thinly herbaceous), sparsely hirsuto-pilose along midribs, minutely glandular.
Ray florets
21-33; corollas white, with abaxial lilac midstripe, 7-9 mm, laminae coiling.
Disc corollas
3-3.8 mm.
Cypselae
(narrowly oblong) 2.8-3.1 mm, 2(-3)-nerved, margins sparsely ciliate, faces glabrous;
pappi:
outer of setae, inner of 21-27 bristles. Flowering May-Jun. Red clay slopes of Summerville Formation and eroded, shale slopes of the Chinle Formation, desert scrub and pinyon-juniper woodland; of conservation concern; 1700-2300 m; Ariz., N.Mex.
Click to Display
1 Total Images