Romneya

Harvey

London J. Bot. 4: 74. 1845.

Common names: Matilija-poppy
Etymology: for Rev. T. Romney Robinson, 1792-1882, Irish astronomer at Armagh and friend of Thomas Coulter, botanist at Dublin
Treatment appears in FNA Volume 3.
 TaxonIllustrator 
FNA03 P63 Roemeria Romneya Stylomecon pg 335.jpegRomneya coulteri
Stylomecon heterophylla
Roemeria refracta
John Myers
John Myers
John Myers

Subshrubs or shrubs, large, glaucous, from creeping rhizomes; sap clear. Stems herbaceous above base, branching, leafy, sparsely pilose or glabrate. Leaves alternate, petiolate; blade gray-green, 1-2× pinnately deeply lobed; primary lobes 3-5, lanceolate or ovate. Inflorescences terminal, 1-flowered; bracts present. Flowers: sepals 3, distinct; petals 6, white, obovate, crinkled; stamens many; anthers yellow; pistil 7-12-carpellate; ovary oblong to ovoid, 1-locular or incompletely to completely multilocular by placental intrusion; style absent; stigmas 7-12, flattened, coherent proximally, radiate-ascending, velvety. Fruits capsular, oblong to ovoid, bristly, dehiscing from apex. Seeds many, ovoid, 1.3-1.5 mm, aril absent. x = 19.

Distribution

Calif. and nw Mexico (Baja California)

Discussion

Species 2 (2 in the flora).

Both species of Romneya, closely related and sometimes merged, are cultivated widely in warm regions for their showy, white flowers, which are the largest in the family.

Selected References

None.

Key

1 Calyx glabrous; seeds papillose; petals 6–10 cm; leaves 5–20 cm. Romneya coulteri
1 Calyx appressed-pubescent; seeds smooth; petals 4–8 cm; leaves 3–10 cm. Romneya trichocalyx
... more about "Romneya"
Harvey +
palmate +  and subpalmate +
Matilija-poppy +
Calif. and nw Mexico (Baja California) +
for Rev. T. Romney Robinson, 1792-1882, Irish astronomer at Armagh and friend of Thomas Coulter, botanist at Dublin +
sessile +, pedicellate +  and symmetric +
oblong;ovoid +
paniculate +  and racemose +
terminal +  and axillary +
cauline +  and basal +
1-locular or +  and incompletely completely multilocular +
oblong +  and ovoid +
distinct +
crinkled +  and obovate +
2 times number of sepals +
7-12-carpellate +
ovate +  and lanceolate +
London J. Bot. +
carunculate +  and arillate +
0.13 cm1.3 mm <br />0.0013 m <br /> (?) +  and 0.15 cm1.5 mm <br />0.0015 m <br /> (?) +
distinct +
obovate +
leafy +  and branching +
decumbent +, spreading +  and erect +
glabrate +  and pilose +
radiate-ascending +
flattened +
Romneya +
Papaveraceae +
caulescent +  and scapose +
perennial +, biennial +  and annual +
shrub +  and subshrub +