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Chondrilla
Chondrilla
Family:
Asteraceae
Mary Barkworth
Flora of North America
Resources
L. D. Gottlieb in Flora of North America (vol. 19, 20 and 21)
Perennials,
40-150 cm; taprooted.
Stems
1-6, erect or ascending, much branched, basally setose, distally glabrous
. Leaves
basal and cauline; petiolate (basal and proximal cauline, petioles winged); blades (at least basal) oblanceolate, pinnatifid (often runcinate) or coarsely and irregularly toothed (apices acute; distal cauline reduced, entire).
Heads
(terminal and axillary) usually borne singly (sometimes clustered along stems and branches).
Peduncles
(nearly 0) not inflated, not bracteate.
Calyculi
of 3-4, minute bractlets.
Involucres
cylindric, 2.5-5 mm diam.
Phyllaries
5-9 in ± 1 series, linear-lanceolate, equal.
Receptacles
pitted, glabrous, epaleate.
Florets
7-15; corollas (soon withering) yellow.
Cypselae
tan to black, nearly cylindric, beaks slender or stout, ribs 5+ (with alternating grooves), faces glabrous;
pappi
persistent (on expanded discs at tips of beaks), of 40-50+, distinct, white, smooth bristles in 1 series.
x
= 5.
Species within checklist:
Western Rangeland Plant Identification List
Chondrilla juncea