Chorizanthe robusta var. hartwegii

(Bentham) Reveal & Rand. Morgan

Phytologia 67: 358. 1989.

Common names: Scott Valley spineflower
EndemicConservation concern
Basionym: Chorizanthe douglasii var. hartwegii Bentham in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 14: 26. 1856 (as hartwegi)
Synonyms: Chorizanthe pungens var. hartwegii (Bentham) Goodman
Treatment appears in FNA Volume 5. Treatment on page 456. Mentioned on page 455.

Plants erect, (0.5–)1–3 × (0.1–)1–2.5 dm. Leaf blades 1.5–5 × 0.2–0.5(–0.7) cm. Involucres 2.5–3.5 mm, margins rose-pink.


Phenology: Flowering Apr–Jul.
Habitat: Sandy outcrops, annual grassland communities
Elevation: 200-300 m

Discussion

Of conservation concern.

Variety hartwegii is known from a few populations in Scott Valley, Santa Cruz County. The epithet “hartwegii” was misapplied to Chorizanthe pungens var. hartwegiana until 1989; see B. Ertter (1996) for details. Scott Valley spineflower is federally listed as endangered.

Selected References

None.

Lower Taxa

None.
James L. Reveal +
(Bentham) Reveal & Rand. Morgan +
Chorizanthe douglasii var. hartwegii +
Scott Valley spineflower +
200-300 m +
Sandy outcrops, annual grassland communities +
Flowering Apr–Jul. +
Endemic +  and Conservation concern +
Chorizanthe pungens var. hartwegii +
Chorizanthe robusta var. hartwegii +
Chorizanthe robusta +
variety +