Balduina angustifolia

(Pursh) B. L. Robinson

Proc. Amer. Acad. Arts 47: 215. 1911.

IllustratedEndemic
Basionyms: Buphthalmum angustifolium Pursh Fl. Amer. Sept. 2: 564. 1813
Synonyms: Actinospermum angustifolium (Pursh) Torrey & A. Gray
Treatment appears in FNA Volume 21. Treatment on page 419.

Annuals (taprooted). Stems 1–20+, branched. Leaves abaxially glabrous or sparsely hairy, adaxially glabrous; basal leaves (absent at flowering) linear-spatulate, 1.5–6 × 0.05–0.19 (–0.25) cm, proximal and mid cauline leaves linear, 1.5–4.6 × 0.02–0.07 cm, distal cauline leaves similar, smaller and becoming reduced, distalmost bractlike. Peduncles 1–11.5 cm, sparsely hairy. Heads 1–20+. Involucres 6–15 mm diam. Phyllaries abaxially glabrous; outer proximally yellow, distally green, lanceolate, 2.4–6.7 mm, apices acuminate-aristate; inner lanceolate, 4.2–7 mm, apices acuminate-aristate. Receptacles: pit borders spinulose-cuspidate at angles. Ray-florets 5–13; tubes 2–3 mm, laminae 8–18 × 2.2–6.5 mm. Disc-florets 30–90; corollas yellow, 3.5–4.5 mm; style-branches yellow. Cypselae 1–2 mm; pappi of obovate to orbiculate, entire scales 0.3–0.6 mm. 2n = 36.


Phenology: Flowering summer–fall (year round south).
Habitat: Dry sandy soils, especially in pinelands
Elevation: 0–100 m

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Balduina angustifolia"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
corymbiform +  and paniculiform +
indeterminate +  and determinate +
Brian R. Keener +
(Pursh) B. L. Robinson +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (6 cm60 mm <br />0.06 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
decurrent +
Buphthalmum angustifolium +
compound +  and simple +
spatulate;linear-spatulate;spatulate;linear-spatulate;linear +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
fertile +  and bisexual +
fertile +  and bisexual +
reduced +  and smaller +
Ala. +, Fla. +, Ga. +  and Miss. +
0–100 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry sandy soils, especially in pinelands +
discoid +  and radiate +
in loose , corymbiform to paniculiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
hemispheric;broadly campanulate +
2.2mm;6.5mm +
glabrous +  and hairy +
deltate +
green +  and yellow +
connate +  and distinct +
unequal +  and subequal +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.67 cm6.7 mm <br />0.0067 m <br />) +
2-carpellate +
persistent +
1 cm10 mm <br />0.01 m <br /> (11.5 cm115 mm <br />0.115 m <br />) +
Flowering summer–fall (year round south). +
30 +  and 50 +
1.5 cm15 mm <br />0.015 m <br /> (4.6 cm46 mm <br />0.046 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
Proc. Amer. Acad. Arts +
sterile +  and fertile +
bearing subulate enations +, hairy +  and bristly +
7 +  and 12 +
obovate +  and orbiculate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
exalbuminous +
Illustrated +  and Endemic +
1 +  and 20 +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Actinospermum angustifolium +
Balduina angustifolia +
Balduina +
species +
urceolate +  and campanulate +
shorter/longer +
dilated +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
toothed +  and entire +
0.42 cm4.2 mm <br />0.0042 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
shrub +  and subshrub +