Chrysopsis linearifolia

Semple

Brittonia 30: 493. 1978.

Endemic
Treatment appears in FNA Volume 20. Treatment on page 218. Mentioned on page 214, 219, 220.

Biennials (rarely perennials), 30–100 (–200) cm; taprooted (rarely perennating by production of basal rosettes). Stems erect (often reddish purple), usually simple, glabrous. Leaves: basal blades oblanceolate to linear, 15–70 × 1–7 mm, faces glabrous or densely woolly; proximal cauline often becoming black and twisted; cauline blades linear or linear-lanceolate to oblong, flat, slightly undulate, or twisted, bases tapering to rounded, margins entire, eciliate, occasionally undulate, apices acute, faces glabrous. Heads (4–) 20–100 in subumbelliform to compact, paniculiform or loosely open corymbiform arrays. Peduncles 2–8 cm, glabrous; bracteoles 1–3, linear, glabrous. Involucres campanulate, 6–10 (–12) mm. Phyllaries in 4–5 series, erect, linear-lanceolate, unequal, 0.6–1.1 mm wide, apices, acute-appressed, acuminate to long-acuminate, faces glabrous, bases of outer sparsely stipitate-glandular. Ray-florets 10–30; laminae 9–12 mm. Disc-florets 35–60; corollas 5–6 mm, lobes 0.5–1 mm. Cypselae (stramineous) 2–2.5 mm, 2–6-ridged (ridges golden yellow to redbrown, translucent, clavate), weakly ribbed, faces sparsely strigose to sometimes only proximally so; pappi in 3 series, outer of linear to narrowly triangular scales 0.5–1 mm, inner of 20–35 bristles 4–6 mm, inner moderately clavate. 2n = 10.

Discussion

Subspecies 2 (2 in the flora).

Chrysopsis linearifolia is disjunct between the central and western panhandle and the central peninsula.

Selected References

None.

Key

1 Heads 20–100, in compact subumbelliform to paniculiform arrays; stems often dark purple, 30–200 cm; leaves numerous (to 200 on tall plants), linear to narrowly linear (lengths more than 10 times widths), flat or slightly undulate or twisted; panhandle Florida 9a. Chrysopsis linearifolia subsp. linearifolia > 1
1 Heads 4–30(–50) in open corymbiform arrays; stems 30–80 cm, green to dark purple; leaves less numerous (to 100 on tall plants), linear to linear-lanceolate or elliptic, sometimes undulate, strongly twisted; c, w peninsular Florida Chrysopsis linearifolia subsp. dressii

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... more about "Chrysopsis linearifolia"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
corymbiform +, subumbelliform +  and compact paniculiform or loosely open +
indeterminate +  and determinate +
John C. Semple +
Semple +
1.5 cm15 mm <br />0.015 m <br /> (7 cm70 mm <br />0.07 m <br />) +
oblanceolate +  and linear +
0.1 cm1 mm <br />0.001 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
stipitate-glandular +
tapering +  and rounded +
compound +  and simple +
rugulose +  and muricate +
whitish +  and stramineous +
? (?) +  and ? (?) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
undulate +, linear-lanceolate +  and oblong +
not 2-lipped +  and actinomorphic +
ampliate +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
2-6-ridged +
fertile +  and bisexual +
fertile +  and bisexual +
gland-dotted +
strigose +, glabrous +  and woolly +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
fibrous-rooted +  and taprooted +
flagelliform +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
campanulate +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
cauline +  and basal +
triangular +
undulate +
2-carpellate +
persistent +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
foliaceous +  and 1-nerved +
linear-lanceolate +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
bearing subulate enations +, hairy +  and bristly +
linear +  and narrowly triangular +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
exalbuminous +
decumbent +  and procumbent +
appendaged +  and truncate +
papillate +  and smooth +
Diplopappus +  and Heterotheca sect. Chrysopsis +
Chrysopsis linearifolia +
Chrysopsis +
species +
100 cm1,000 mm <br />1 m <br /> (200 cm2,000 mm <br />2 m <br />) +
30 cm300 mm <br />0.3 m <br /> (100 cm1,000 mm <br />1 m <br />) +
9 +, 4 +  and 5 +