Boltonia asteroides var. latisquama

(A. Gray) Cronquist

Bull. Torrey Bot. Club 74: 149. 1947.

Endemic
Basionym: Boltonia latisquama A. Gray Amer. J. Sci. Arts, ser. 2, 33: 238. 1862
Treatment appears in FNA Volume 20. Treatment on page 356. Mentioned on page 355.

Heads 30–50 (–100); bracts linear-oblanceolate to narrowly oblanceolate or linear-subulate, 25–70 × 2–7 mm. Involucres 4–5 × 6–14 mm. Phyllaries sometimes reflexed, spatulate to obovate-spatulate, subequal, membranous margins broad, (2–) 2.5–6 mm wide, apices cuspidate; outer 2.6–3.8 × 0.5–1.6 mm; inner 3.2–4 × 0.9–1.5 mm. Cypselae obovoid to obcordiform, winged; pappus awns 0.7–2 mm, lengths 2/3+ cypselae. 2n = 18.


Phenology: Flowering Aug–Sep.
Habitat: Marshes, streams, sloughs, wet ditches
Elevation: 10–400 m

Distribution

V20-821-distribution-map.gif

Ark., Conn., Iowa, Kans., Maine, Md., Mass., Minn., Miss., Mo., Nebr., N.Dak., Ohio, Okla., R.I., S.Dak., Vt., Va., Wis.

Discussion

Variety latisquama is considered endangered in Maryland.

Selected References

None.

Lower Taxa

None.
not tailed +, rounded +  and obtuse +
distinct +
inner +  and outer +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +  and corymbiform +
indeterminate +  and determinate +
Vesna Karaman-Castro +  and Lowell E. Urbatsch +
(A. Gray) Cronquist +
7 +  and 12 +
not decurrent +
Boltonia latisquama +
subulate;lanceolate or oblanceolate +
rugulose +  and muricate +
1.2 cm12 mm <br />0.012 m <br /> (6.2 cm62 mm <br />0.062 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (7 cm70 mm <br />0.07 m <br />) +
linear-oblanceolate +  and narrowly oblanceolate or linear-subulate +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
spreading;ascending +
barbellulate +  and barbellate +
2 cm20 mm <br />0.02 m <br /> (22 cm220 mm <br />0.22 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (3 cm30 mm <br />0.03 m <br />) +
not 2-lipped +  and actinomorphic +
white +  and lilac +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
obovoid +  and obcordiform +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
fertile +  and bisexual +
fertile +  and bisexual +
compressed;obovoid;cuneate or obcordiform +
Ark. +, Conn. +, Iowa +, Kans. +, Maine +, Md. +, Mass. +, Minn. +, Miss. +, Mo. +, Nebr. +, N.Dak. +, Ohio +, Okla. +, R.I. +, S.Dak. +, Vt. +, Va. +  and Wis. +
10–400 m +
puberulent +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Marshes, streams, sloughs, wet ditches +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
hemispheric +
0.6 cm6 mm <br />0.006 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
cauline +  and basal +
triangular +
not +  and winged +
entire +  and serrulate +
2.5mm +  and 6mm +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
2-carpellate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
persistent +
0.5 cm5 mm <br />0.005 m <br /> (22 cm220 mm <br />0.22 m <br />) +
Flowering Aug–Sep. +
spatulate +  and obovate-spatulate +
Bull. Torrey Bot. Club +
triquetrous +
bearing subulate enations +, hairy +  and bristly +
conic;hemispheric +
adaxial +  and abaxial +
1 +  and 2 +
exalbuminous +
appendaged +  and truncate +
papillate +  and smooth +
Compositae +
Boltonia asteroides var. latisquama +
Boltonia asteroides +
variety +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
30 cm300 mm <br />0.3 m <br /> (200 cm2,000 mm <br />2 m <br />) +
0.1mm +  and 0.5mm +