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sickle-leaf golden-aster, sickle-leaf silk-grass

zigzag silkgrass

Habit Perennials, (10–)20–30(–40) cm; rhizomes 0.5–5 cm. Perennials, 20–50 cm; rhizomes 1–5 cm.
Stems

erect, sometimes reddish brown, sometimes branched distally, striate, sparsely to densely long-sericeous.

1–6, ascending, sometimes reddish brown, usually simple, flexuous, slender, moderately sericeous, glabrescent.

Leaves

basal usually withering by flowering, shorter than cauline;

cauline spreading to ascending, sessile, blades linear, falcate, often conduplicate, apices acuminate;

proximal 50–90 × 2–7 mm, glabrate to sparsely sericeous;

distal somewhat smaller, glabrate except for margins.

basal equaling or shorter than cauline, persistent through winter, withering by flowering;

cauline spreading to ascending, sessile, blades linear-lanceolate, 30–70 × 3–7 mm, apices acute, faces moderately sericeous, glabrescent;

distal slightly reduced.

Peduncles

sparsely bracteolate, 1–4 cm, white-villous.

sparsely bracteolate, 1–11 cm, tomentose, sparsely, minutely glandular;

bracteoles reduced distally.

Involucres

turbino-campanulate, 5–8 mm.

narrowly campanulate, (7–)8–11 mm (equaling pappi).

Ray florets

9–15;

corolla laminae 5–8 mm.

9–13;

laminae 5–8 mm.

Disc florets

30–60;

corollas 4.5–6 mm, sparsely pilose near base of limbs, lobes 0.5 mm, sparsely pilose.

25–45;

corollas 5.5–7 mm, tubes and proximal throats sparsely puberulent, lobes 0.5 mm, glabrous or glabrate.

Phyllaries

in 5–6 series, apices with tufts of hairs, faces sparsely strigose.

in 4–6 series, margins hyaline, sometimes reddish distally, fimbriate (midnerves pronounced), apices acute, faces sparsely pilose, eglandular or sparsely, minutely stipitate-glandular.

Heads

(2–)4–10(–25) in corymbiform arrays.

3–20 per stem, in corymbiform arrays.

Cypselae

fusiform, 3–4 mm, ribbed, faces strigose;

pappi: outer of linear setiform scales 0.5–1 mm, inner of 30–40 bristles 4–6 mm.

fusiform, 3–4 mm, ribbed (dark between ribs), faces sparsely strigose;

pappi: outer of linear scales 0.3–1 mm, inner of 30–50 bristles 5.5–7 mm.

2n

= 18.

= 18.

Pityopsis falcata

Pityopsis flexuosa

Phenology Flowering summer–fall. Flowering late summer–fall.
Habitat Open areas on sandy glacial deposits, often in pine barrens (Pinus rigida) Sandy, open soils, open pine-oak woods, clearings
Elevation 10–100 m (0–300 ft) 0–50 m (0–200 ft)
Distribution
from FNA
CT; FL; MA; NJ; NY; RI
[WildflowerSearch map]
[BONAP county map]
from FNA
FL
[BONAP county map]
Discussion

Pityopsis falcata grows on deposits left along the front of the Wisconsin Glaciation. It can be locally abundant in open sandy soils. It was collected once along railroad tracks west of Toronto, Ontario, and also along a beach in St. Petersburg, Florida, in 1955.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Pityopsis flexuosa is known only from the vicinity of Tallahassee.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 20, p. 223. FNA vol. 20, p. 224.
Parent taxa Asteraceae > tribe Astereae > Pityopsis Asteraceae > tribe Astereae > Pityopsis
Sibling taxa
P. aspera, P. flexuosa, P. graminifolia, P. oligantha, P. pinifolia, P. ruthii
P. aspera, P. falcata, P. graminifolia, P. oligantha, P. pinifolia, P. ruthii
Synonyms Inula falcata, Chrysopsis falcata, Heterotheca falcata, Inula mariana var. ×falcata Chrysopsis flexuosa, Heterotheca flexuosa
Name authority (Pursh) Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 318. (1840) (Nash) Small: Man. S.E. Fl., 1341. (1933)
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