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Xylorhiza confertifolia
(Cronquist) T.J. Watson
Family:
Asteraceae
Henrieville Woody-Aster
FNA
Resources
Guy L. Nesom in Flora of North America (vol. 20)
Subshrubs
10-15(-23) cm.
Stems
branched mostly in proximal
3
/ 4 (leaves numerous, crowded, internodes averaging 2-3 mm), finely stipitate-glandular or nearly glabrous.
Leaf blades
linear, 1-2.5 mm wide, bases attenuate, not clasping, margins involute, entire, faces puberulent and/or minutely stipitate-glandular.
Peduncles
2-14 cm.
Involucres
8-12 × 10-16(-20) mm.
Ray florets
4-14; corollas white.
Style-branch appendages
± equal stigmatic lines. 2
n
= 12.
Flowering May-Jul. Barren slopes in alkaline clay, pinyon-juniper; of conservation concern; 1400-2300 m; Utah.
Xylorhiza confertifolia
is known form Garfield and Kane counties.
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