Mucronea

Bentham

Trans. Linn. Soc. London 17: 405, 419, plate 20. 1836.

Common names: California spineflower
Etymology: Latin mucronis, sharp point, alluding to awns of bracts and involucres
Synonyms: Chorizanthe sect. Mucronea (Bentham) A. Gray
Treatment appears in FNA Volume 5. Treatment on page 470. Mentioned on page 219, 220, 446.
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 TaxonIllustrator 
FNA5 P47b Chorizanthe watsonii.jpegChorizanthe watsonii
Chorizanthe brevicornu var. brevicornu
Mucronea californica

Herbs, annual; taproot slender. Stems arising directly from the root, erect to spreading, solid, not fistulose or disarticulating into ringlike segments, sparsely glandular-pubescent. Leaves usually quickly deciduous, basal, rosulate; petiole absent; blade spatulate to obovate, margins entire. Inflorescences terminal, cymose, uniparous due to suppression of secondaries; branches dichotomous, not brittle or disarticulating into segments, round, sparsely glandular-pubescent; bracts 3 (–5), positioned to side of node or perfoliate and completely but unequally surrounding node, connate nearly completely, triangular to ovate or oblong, awned, sparsely glandular-pubescent. Peduncles absent. Involucres 1–3 per node, tubular, cylindric, (2–) 3–4-angled, slightly ventricose on the angles in some; teeth (2–) 3–4, awn-tipped. Flowers 1 (–2) per involucre; perianth white to pink, campanulate when open, cylindric when closed, pubescent abaxially; tepals 6, connate ca. 1/3 their length, monomorphic, entire or erose to fimbriate apically; stamens 6–9; filaments free, glabrous; anthers pink to red, oblong. Achenes mostly included, brown to black, not winged, globose-lenticular, glabrous. Seeds: embryo straight. x = 19.

Discussion

Species 2 (2 in the flora).

Selected References

None.

Key

1 Inflorescence bracts positioned to side of node, involucres 1-3 per node, 2.5-5(-7) mm,bracts (2-)3(-4), awns (0.5-)1-2.5 (3) mm; flowers 1-2; tepals entire apically Mucronea californica
1 Inflorescence bracts perfoliate; involucres 1 per node, 3-5(-6) mm, bracts 4, awns (0.3-)0.5-1.2 mm; flowers 1; tepals entire to fimbriate apically Mucronea perfoliata

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

... more about "Mucronea"
brown;black +
globose-lenticular +
pink +  and red +
James L. Reveal +
Bentham +
stipelike +
awn-tipped +  and simple +
spatulate;obovate +
pubescent +  and glabrous +
scale-like +  and leaflike +
disarticulating +  and dichotomous +
not brittle +
glandular-pubescent +
just below the soil surface or and above the soil surface +  and spreading +
California spineflower +
Latin mucronis, sharp point, alluding to awns of bracts and involucres +
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 +
uniparous +  and cymose +
cymelike +, paniclelike +, racemelike +  and spikelike +
connate +  and free +
ventricose +, (2-)3-4-angled +, cylindric +  and tubular +
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 +
cylindric +  and campanulate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
homostylous +  and 3-carpellate +
Trans. Linn. Soc. London +
, +  and solid +
slender;stout +
6 +  and 9 +
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 +
Chorizanthe sect. Mucronea +
chambered +, , +  and solid +
Mucronea +
Polygonaceae subfam. Eriogonoideae +
erose +, entire +  and monomorphic +
fimbriate +
coriaceous +
persistent +
membranous +
pubescent +  and glabrous +
3 +, 2 +  and 1 +