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Tetraneuris argentea
Tetraneuris argentea
(A. Gray) Greene
Family:
Asteraceae
perkysue
[
Actinella argentea
A. Gray,
more
Hymenoxys argentea
(A. Gray) Parker
]
Patrick Alexander
Flora of North America
Resources
Mark W. Bierner, Billie L. Turner in Flora of North America (vol. 21)
Perennials,
6-25(-42+) cm.
Caudices
± branched, branches notably thickened distally.
Stems
1-8(-12), erect, leafy, ± branched distally.
Leaves
basal and cauline, entire, usually densely strigoso-canescent, ± gland-dotted; basal leaves tightly clustered, blades spatulate to oblanceolate; proximal cauline blades oblanceolate; mid blades oblanceolate to linear-oblanceolate, 2.5-5 mm wide; distal blades linear-lanceolate to linear.
Heads
1-10(-30) per plant (1-7 per stem), borne singly or in paniculiform to corymbiform arrays.
Peduncles
2-13.5 cm, usually densely hairy.
Involucres
(5-)7-10 × 8-15 mm.
Outer phyllaries
8-11, 4-6.5 mm, margins 0-0.3 mm wide, usually scarious, abaxial faces densely hairy.
Ray florets
8-14; corollas 11.8-17 mm.
Disc florets
25-75(-100+); corollas yellow proximally, yellow or rarely purplish distally, 2.8-3.8 mm.
Cypselae
2.4-3.1 mm;
pappi
of 5-6 obovate, aristate scales 2.1-3.5 mm.
2
n
= 30, 60. Flowering (Apr-)May-Aug(-Sep). Roadsides, hillsides, open treeless areas, edges of woods; (1500-)2000-2400(-3000) m; Ariz., N.Mex.
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Patrick Alexander
Patrick Alexander
Patrick Alexander
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