familyPolygonaceae
subfamilyPolygonaceae subfam. Eriogonoideae
genusChorizanthe
subgenusChorizanthe subg. Amphietes
speciesChorizanthe robusta
Chorizanthe robusta var. hartwegii
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
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.
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... more about "Chorizanthe robusta var. hartwegii"
not winged +
light-brown +
included +
glabrous +
homocarpic +
globose-lenticular +
3.5mm;4mm +
dehiscing +
oblong +
alternating +
long +
anterior +
absent +
reduced +
distal +
stipelike +
entire +
villous +
oblanceolate +
awn-tipped +
leaflike +
opposite +
deciduous +
distinct +
absent +
scale-like +
connate +
brittle +
free +
aerial +
pubescent +
round +
woody +
Scott Valley spineflower +
Calif. +
nuclear +
abundant +
distinct +
glabrous +
white +
pedicellate +
exserted +
pubescent +
bisexual +
disarticulating +
aerial +
fistulose +
slender +
homocarpic +
bractlike +
capitate +
cluster +
green;reddish +
axillary +
enclosed +
6-ribbed +
not corrugate +
greenish +
pubescent +
nonmembranous +
0.2cm;0.5cm +
bractlike +
anterior +
continuous +
rose-pink +
scarious +
thin +
not swollen +
orthotropous +
basal +
articulate +
absent +
accrescent +
cluster +
reflexed +
absent +
erect to deflexed +
winged +
bicolored +
persistent +
pubescent +
pustulose +
accrescent +
absent +
indistinct +
short-petiolate +
aciculate +
acerose +
reduced +
Phytologia +
1989 +
fibrous +
not suppressed +
ringlike +
longitudinal +
recurved +
included +
absent +
not disarticulating +
scandent +
absent +
pubescent +
peltate +
capitate +
foliaceous +
absent +
chartaceous +
arranged +
involucral +
absent +
distinct +
erect;spreading +
spreading;erect +
Chorizanthe robusta var. hartwegii +
Chorizanthe robusta +
variety +
absent +
monomorphic +
cuspidate +
connate +
dimorphic +
1/4 +
pubescent +
coriaceous +
awn-tipped +
divergent +
shallow +
connate +
spreading +
unequal +
equal +
persistent +
membranous +
glandular-punctate +
developing +
raised +
homophyllous +
annual +
villous +
polycarpic +
1dm;2.5dm +