Chaenactis suffrutescens

A. Gray
Notes Compositae, 100. 1880.
Common names: Shasta pincushion
EndemicConservation concern
Synonyms: Chaenactis suffrutescens var. incana Stockwell
Treatment appears in FNA Volume 21. Treatment on page 404. Mentioned on page 403, 405.

Perennials or subshrubs (10–)25–45(–60) cm (sometimes cespitose, not matted); proximal indument (especially stems) persistent, whitish, densely lanuginose or pannose. Stems mostly 5–15+, usually erect. Leaves usually ± cauline, sometimes ± basal, 5–10 cm; largest blades lance-ovate or deltate, ± plane, 1–2-pinnately lobed; primary lobes mostly 2–5 pairs, ± remote, ultimate lobes ± plane. Heads mostly 1–3 per stem. Peduncles ascending to erect, (5–)10–20 cm. Involucres ± cylindric. Phyllaries: longest 14–18 mm; outer predominantly stipitate-glandular (other indument none or sparse), apices ± squarrose, pliant. Corollas 8.5–10 mm. Cypselae 7–9 mm; pappi: longest scales 7–9 mm. 2n = 12.


Phenology: Flowering May–early Sep.
Habitat: Loose scree, sand, rocky soils, slopes, drainages, usually on serpentine or other ultramafic deposits
Elevation: 700–2300 m

Discussion

Of conservation concern.

Chaenactis suffrutescens is known from the southern and eastern Klamath Ranges and northern Coast Ranges of Trinity and Siskiyou counties (nearly to Oregon). It is sometimes cultivated in rock gardens and may be found outside its native range. Small forms of C. suffrutescens from southern Trinity County approach C. nevadensis in habit (see discussion there).

Selected References

None.

Lower Taxa

None.

... more about "Chaenactis suffrutescens"
James D. Morefield +
A. Gray +
Undefined sect. Macrocarphus +
Shasta pincushion +
700–2300 m +
Loose scree, sand, rocky soils, slopes, drainages, usually on serpentine or other ultramafic deposits +
Flowering May–early Sep. +
Notes Compositae, +
Endemic +  and Conservation concern +
Chaenactis suffrutescens var. incana +
Chaenactis suffrutescens +
Chaenactis sect. Macrocarphus +
species +