Eriogonum cithariforme

Herbs, spreading to erect, 2–3(–5) dm, glabrous or tomentose, greenish or reddish. Stems: aerial flowering stems erect, 0.5–1 dm, glabrous or tomentose. Leaves basal and sometimes cauline; basal: petiole 1–5 cm, tomentose to floccose, often slightly winged, blade oblanceolate or elliptic to ovate or nearly rounded, 1–2 × 0.5–1.5(–2) cm, tomentose abaxially, floccose to glabrate and grayish to greenish adaxially; cauline: petiole 0.5–2 cm, floccose, blade elliptic, 0.3–1 cm × 0.2–0.7 cm, similar to basal blade. Inflorescences cymose, distally uniparous due to suppression of secondary branches, open, 5–25 × 5–25 cm; branches usually inwardly curved, glabrous or tomentose; bracts 0.5–2.5 × 0.5–2 mm. Peduncles absent. Involucres somewhat appressed to branches, turbinate, 2.5–3 × 1.5–2 mm, glabrous; teeth 5, erect, 0.2–0.4 mm. Flowers 1.5–2 mm; perianth white to rose, glabrous; tepals monomorphic, oblong-obovate; stamens included, 1–1.5 mm; filaments pilose proximally. Achenes brown, 3-gonous, 1–1.5 mm.

Distribution

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Calif.

Discussion

Varieties 2 (2 in the flora).

The graceful, upwardly curved branch segments of Eriogonum cithariforme generally are distinctive in older plants, although an occasional individual of E. davidsonii may have this feature. A distinction between E. cithariforme and E. roseum also is troublesome, as in young material the curved branch segments are not always obvious.

Selected References

None.

Lower Taxa

Eriogonum cithariforme var. agninum, Eriogonum cithariforme var. cithariforme

Key

1	Flowering stems and inflorescence branches tomentose	Eriogonum cithariforme var. cithariforme
1	Flowering stems and inflorescence branches glabrous	Eriogonum cithariforme var. agninum