Pityopsis graminifolia var. tenuifolia

(Torrey) Semple & F. D. Bowers

Rev. Pityopsis, 24. 1985.

Endemic
Basionym: Inula graminifolia var. tenuifolia Torrey Ann. Lyceum Nat. Hist. New York 2: 212. 1827
Synonyms: Chrysopsis graminifolia var. microcephala (Small) Cronquist Heterotheca microcephala (Small) Shinners Pityopsis graminifolia var. microcephala (Small) Semple
Treatment appears in FNA Volume 20. Treatment on page 227. Mentioned on page 226.

Cauline leaves slightly overlapping, linear-lanceolate, 40–70 × 2–5 mm, reduced distally. Involucres 4.5–8 mm. Phyllary faces (inner) usually sparsely to moderately, rarely densely sericeous throughout, sometimes sparsely glandular distally. Ray florets 8–12; laminae 4–7 mm. Disc florets 15–28; corollas 4.5–6 mm, lobes 0.4–0.7 mm, glabrous. 2n = 18.


Phenology: Flowering early fall–spring (Fla).
Habitat: Sandy soils, open oak-pine woods, scrub, roadsides
Elevation: 0–300 m

Distribution

V20-503-distribution-map.gif

Ala., Ark., Fla., Ga., La., N.C., Okla., S.C., Tex.

Discussion

Variety tenuifolia grows on the outer coastal plain from east Texas to North Carolina, and inland to the southern Ozark Plateau. Involucres of some Texas plants are larger than those further east. It is unknown whether such plants are diploid or tetraploid.

Selected References

None.

Lower Taxa

None.
John C. Semple +
(Torrey) Semple & F. D. Bowers +
Inula graminifolia var. tenuifolia +
Ala. +, Ark. +, Fla. +, Ga. +, La. +, N.C. +, Okla. +, S.C. +  and Tex. +
0–300 m +
Sandy soils, open oak-pine woods, scrub, roadsides +
Flowering early fall–spring (Fla). +
Rev. Pityopsis, +
Chrysopsis graminifolia var. microcephala +, Heterotheca microcephala +  and Pityopsis graminifolia var. microcephala +
Pityopsis graminifolia var. tenuifolia +
Pityopsis graminifolia +
variety +