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Trixis
Family:
Asteraceae
Max Licher
FNA
Resources
David J. Keil in Flora of North America (vol. 19, 20 and 21)
Shrubs
[herbs], 20-300+ cm (often rhizomatous, stems hairy, hairs gland-tipped and glandless).
Leaves
cauline; sessile or petiolate; blades elliptic, lanceolate, linear, or linear-lanceolate, bases cuneate, margins dentate or entire, faces (at least abaxial) usually glandular and ± strigose.
Heads
quasi-radiate (see florets), borne singly or in corymbiform or paniculiform arrays.
Involucres
± cylindric, 12-15 mm (subtended by calyculi of 3-7 spreading or ascending bractlets).
Phyllaries
(reflexed in fruit) in 1-2 series, linear (± keeled), apices acute.
Receptacles
flat, smooth, hairy, epaleate.
Florets
4-25[-60], bisexual, fertile; corollas yellow (aging white), zygomorphic (2-lipped; outer lip liguliform, lobes 3, lance-deltate, inner lip smaller, lobes ± filiform, recurved); anther basal appendages entire, apical appendages oblong, acute; style branches relatively short, apices truncate-penicillate.
Cypselae
subcylindric to fusiform, often ± beaked, ribs 5, faces glandular-hairy;
pappi
of 60-80+ dull white [tawny], finely barbed bristles.
x
= 9.
Species within inventory project:
Midwest Herbaria Network - State Inventories
Trixis aggregata
Trixis alata
Trixis angustifolia
Trixis anomala
Trixis antimenorrhoea
Trixis cacalioides
Trixis calcicola
Trixis californica
Trixis chiapensis
Trixis divaricata
Trixis frutescens
Trixis glandulifera
Trixis glaziovii
Trixis glutinosa
Trixis grandibracteata
Images
not available
Trixis grisebachii
Trixis haenkei
Trixis hassleri
Trixis hintoniorum
Trixis hyposericea
Trixis inula
Trixis lessingii
Trixis longifolia
Images
not available
Trixis megalophylla
Trixis mexicana
Trixis michoacana
Trixis michuacana
Trixis nelsonii
Trixis nobilis
Trixis parviflora
Trixis peninsularis
Trixis praestans
Trixis pringlei
Trixis proustioides
Trixis pruskii
Trixis pterocaulis
Trixis radialis
Trixis sagasteguii
Trixis silvatica
Trixis suffruticosa
Trixis vauthieri
Trixis wrightii
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