Chorizanthe blakleyi

Hardham

Leafl. W. Bot. 10: 95. 1964.

Common names: Blakley’s spineflower
EndemicConservation concern
Treatment appears in FNA Volume 5. Treatment on page 459. Mentioned on page 448.

Plants spreading to ascending, 0.5–1.5 × 0.5–3 dm, thinly pubescent. Leaves basal; petiole 0.5–2 cm; blade oblanceolate, 0.5–2.5 × 0.3–0.8 cm, thinly pubescent. Inflorescences with involucres in dense clusters 1–2 cm diam., yellowish green; bracts 2, without whorl of sessile bracts about midstem, usually leaflike, oblanceolate, 0.5–1.5 cm × 1.5–3 mm, gradually reduced and becoming scalelike at distal nodes, linear, aciculate, acerose, 0.3–0.8 cm × 1–2 mm, awns straight, 1–2.5 mm. Involucres 3–10+, yellowish green, urceolate, slightly ventricose basally, 3–4.5 mm, slightly corrugate, without scarious or membranous margins, thinly pubescent; teeth spreading, unequal, 1–3 mm; awns straight or uncinate with longer anterior one straight or slightly curved, mostly 2 mm, others uncinate, 0.5–1.5 mm. Flowers exserted; perianth bicolored with floral-tube greenish white to white and the lobes white to pinkish, cylindric, 5–6 mm, sparsely pubescent; tepals connate 2/3 their length, dimorphic, obovate, those of outer whorl erect, slightly longer than those of inner whorl, 2-lobed apically, those of inner whorl erect, 2-lobed, erose apically; stamens 9, included; filaments distinct, 5–5.5 mm, glabrous; anthers yellow to golden, oblong, 1–1.2 mm. Achenes brown, globose-lenticular, 3–3.5 mm. 2n = ca. 38.


Phenology: Flowering May–Jul.
Habitat: Sandy or gravelly flats and slopes, chaparral communities, oak woodlands
Elevation: 600-1600 m

Discussion

Of conservation concern.

Chorizanthe blakleyi is known only from north-facing slopes and foothills of the Sierra Madre. The species is rare and localized. The yellowish green stem, branches, and involucres readily distinguish it. The white flowers align it with C. obovata.

Selected References

None.

Lower Taxa

None.

"/2" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property."/3" is not declared as a valid unit of measurement for this property.

... more about "Chorizanthe blakleyi"
globose-lenticular +
yellow +  and golden +
0.1 cm1 mm <br />0.001 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
James L. Reveal +
Hardham +
alternating +
straight +
uncinate +
unequal +
2 cm20 mm <br />0.02 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
alternate +  and rosulate +
stipelike +
awn-tipped +  and simple +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
oblanceolate +
0.3cm;0.8cm +
deciduous +
distinct +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
glandular +, woolly-floccose +, tomentose +, strigose +, villous +, hirsute +  and pubescent +
acerose +, scale-like +  and oblanceolate +
reduced +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
disarticulating +, dichotomous +, branched +  and open +
erect +  and spreading +
just below the soil surface or and above the soil surface +  and spreading +
Blakley’s spineflower +
600-1600 m +
curved +  and straight +
0.5 cm5 mm <br />0.005 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
greenish white +  and white +
white +  and pink or rose maroon or purple or yellow +
decumbent to erect +  and prostrate +
unwinged +  and winged +
black +, red +, brown +  and yellowish +
exserted +  and included +
pubescent +  and glabrous +
spheroidal +, 4-gonous +, lenticular +, biconvex +, discoid +, 3-gonous +  and 2-gonous +
Sandy or gravelly flats and slopes, chaparral communities, oak woodlands +
uniparous +, capitate +  and cymose +
cymelike +, paniclelike +, racemelike +  and spikelike +
connate +  and free +
yellowish green +
ventricose +  and urceolate +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
nonmembranous +
in whorls +, opposite +, alternate +  and rosulate +
deciduous +  and persistent +
white;pinkish +
cylindric +
curved +  and straight +
pubescent +  and glabrous +
lobed +, undulate +, crisped +, crenulate +  and entire +
not swollen +
uncinate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
cylindric +  and campanulate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering May–Jul. +
homostylous +  and 3-carpellate +
Leafl. W. Bot. +
, +  and solid +
slender;stout +
Endemic +  and Conservation concern +
not disarticulating +
decumbent to erect +  and prostrate +
prostrate +  and erect +
penicillate +, fimbriate +  and capitate +
deciduous +  and persistent +
? (?) +  and ? (?) +
coriaceous +  and membranous +
consisting of a series +  and tubular +
distinct +
erect;spreading +
Chorizanthe sect. Anisogonum +, Chorizanthe sect. Eriogonellopsis +  and Chorizanthe sect. Herbaceae +
chambered +, , +  and solid +
Slender (?) +  and Stout (?) +
Chorizanthe blakleyi +
Chorizanthe sect. Ptelosepala +
species +
lobed +  and laciniate +
coriaceous +
shallow +
unequal +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
spreading;ascending +
3 +, 2 +  and 1 +