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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.
Trixis aggregata
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Trixis alata
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Trixis angustifolia
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Trixis anomala
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Trixis antimenorrhoea
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Trixis cacalioides
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Trixis calcicola
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Trixis californica
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Trixis chiapensis
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Trixis divaricata
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Trixis frutescens
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Trixis glandulifera
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Trixis glaziovii
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Trixis glutinosa
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Trixis grandibracteata
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Trixis grisebachii
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Trixis haenkei
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Trixis hassleri
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Trixis hintoniorum
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Trixis hyposericea
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Trixis inula
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Trixis lessingii
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Trixis longifolia
Images
not available
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Trixis megalophylla
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Trixis mexicana
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Trixis michoacana
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Trixis michuacana
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Trixis nelsonii
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Trixis nobilis
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Trixis parviflora
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Trixis peninsularis
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Trixis praestans
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Trixis pringlei
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Trixis proustioides
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Trixis pruskii
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Trixis pterocaulis
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Trixis radialis
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Trixis sagasteguii
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Trixis silvatica
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Trixis suffruticosa
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Trixis vauthieri
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Trixis wrightii
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This project was made possible in part by the Institute of Museum and Library Services [MG-70-19-0057-19].
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