Mucronea perfoliata

(A. Gray) A. Heller

Muhlenburgia 2: 23. 1905.

Common names: Perfoliate spineflower
Endemic
Basionym: Chorizanthe perfoliata A. Gray Proc. Boston Soc. Nat. Hist. 7: 148. 1859
Synonyms: Mucronea perfoliata var. opaca Hoover
Treatment appears in FNA Volume 5. Treatment on page 471. Mentioned on page 470.

Plants (0.2–) 0.3–2 (–3) ×0.5–5 dm. Leaves: petiole inconspicuous; blade spatulate, (1–) 2–5 × (0.2–) 0.3–1.2 (–2) cm. Inflorescences: bracts 3, spreading to nearly erect, perfoliate, becoming 1-sided and weakly perfoliate apically, connate for nearly their entire length, orbiculate, 0.5–1 (–2) cm, apex acute to obtuse; awns 0.3–1.2 (–1.5) mm. Involucres 1, 4-angled, distinctly ribbed and usually corrugate, often strongly ventricose, 3–5 (–6) mm; teeth 4, spreading to strongly divergent, glandular or strongly hirsute; awns straight, (0.3–) 0.5–1.2 mm. Flowers 1; perianth 1.5–3 (–3.5) mm, pubescent abaxially; tepals narrowly oblanceolate, erose or fimbriate apically, infrequently entire or 2-lobed; stamens 9; filaments 1–2.5 (–3) mm; anthers 0.5–0.8 (–0.9) mm. Achenes 2–3 mm. 2n = 38, 40.


Phenology: Flowering Mar–Jul.
Habitat: Sandy to gravelly flats and slopes, mixed grassland, saltbush, creosote bush, and chaparral communities, pine-oak woodlands
Elevation: 100-1600(-1900) m

Discussion

Mucronea perfoliata is found in the Coast and Transverse ranges from Stanislaus County south to Ventura County, and in the San Joaquin Valley from Kings County south to the Tehachapi Mountains and the northwestern edge of the Mojave Desert in Kern County.

Selected References

None.

Lower Taxa

None.

"connate" is not a number."dm" is not declared as a valid unit of measurement for this property.

... more about "Mucronea perfoliata"
brown;black +
globose-lenticular +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
pink +  and red +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
acute;obtuse +
James L. Reveal +
(A. Gray) A. Heller +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
straight +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
stipelike +
Chorizanthe perfoliata +
awn-tipped +  and simple +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
spatulate +
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
spreading +  and nearly erect +
pubescent +  and glabrous +
orbiculate +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
disarticulating +  and dichotomous +
not brittle +
glandular-pubescent +
just below the soil surface or and above the soil surface +  and spreading +
Perfoliate spineflower +
100-1600(-1900) m +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
unisexual +  and bisexual +
disarticulating +  and solid +
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 to gravelly flats and slopes, mixed grassland, saltbush, creosote bush, and chaparral communities, pine-oak woodlands +
uniparous +  and cymose +
cymelike +, paniclelike +, racemelike +  and spikelike +
connate +  and free +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
ventricose +  and 4-angled +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
nonmembranous +
in whorls +, opposite +, alternate +  and rosulate +
deciduous +
cauline +  and basal +
bractlike +
pubescent +  and glabrous +
lobed +, undulate +, crisped +, crenulate +  and entire +
glandular-pubescent +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
cylindric +  and campanulate +
accrescent +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
inconspicuous +
Flowering Mar–Jul. +
homostylous +  and 3-carpellate +
Muhlenburgia +
, +  and solid +
slender;stout +
disarticulating +  and solid +
decumbent to spreading or erect +  and prostrate +
erect +  and spreading +
glandular-pubescent +
not fistulose +
penicillate +, fimbriate +  and capitate +
deciduous +  and persistent +
2-lobed +  and cylindric +
coriaceous +  and membranous +
consisting of a series +  and tubular +
distinct +
erect;spreading or recurved +
spreading;erect +
Mucronea perfoliata var. opaca +
chambered +, , +  and solid +
Mucronea perfoliata +
Mucronea +
species +
erose +, entire +  and monomorphic +
2-lobed +, entire +, fimbriate +  and oblanceolate +
coriaceous +
hirsute;glandular +
persistent +
membranous +
pubescent +  and glabrous +
3 +, 2 +  and 1 +