The Morton Arboretum
The Field Museum
Chicago Botanic Garden
Additional Partners
Log In
New Account
Sitemap
Home
Search Collections
Map Search
Browse Images
Inventories
Aquatic Invasive Plant Guide
Naturalized flora of The Morton Arboretum
vPlants Checklist
Chicago Region Checklists and Inventories
Interactive Tools
vPlants Dynamic Key
Dynamic Checklist
Dynamic Key
Hazardia whitneyi
(A. Gray) Greene
Family:
Asteraceae
Whitney's Bristleweed
Teague Embrey
FNA
Resources
W. Dennis Clark in Flora of North America (vol. 20)
Perennials
(from woody rootstocks)
or subshrubs,
20-50 cm.
Stems
scabrid to sparsely tomentulose, distally stipitate-glandular.
Leaves
sessile; blades widely oblong to oblanceolate, 25-50 × 7-16 mm, subcoriaceous, bases subclasping (distal), margins serrate, apices acute, faces glabrous, sparsely puberulent, or glandular-scabrid.
Heads
borne singly or in spiciform, racemiform, or cymiform arrays.
Involucres
campanulate, 11-13 × 8-12 mm.
Phyllaries
sometimes recurved, linear-lanceolate, apices acute, herbaceous and stipitate-glandular.
Ray florets
0 or 5-18, sterile; corollas longer than involucres, conspicuous.
Disc florets
15-30; corollas 8-10 mm.
Cypselae
5-10 mm, glabrous.
Open Interactive Map
Richard Spellenberg
Richard Spellenberg
Click to Display
26 Total Images