Limnanthes alba subsp. gracilis

(Howell) Morin

J. Bot. Res. Inst. Texas 1: 1017. 2007.

Basionym: Limnanthes gracilis Howell Fl. N.W. Amer., 108. 1897
Treatment appears in FNA Volume 7. Treatment on page 181. Mentioned on page 175, 179, 180.
Revision as of 11:05, 30 July 2020 by imported>Volume Importer
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Herbage glabrous. Leaflets: blade ovate to linear-lanceolate. Flowers: sepals accrescent, lanceolate-ovate, 4–8 mm, glabrous; petals usually white, sometimes cream basally, aging or drying pink, obovate, 8–10 mm, as long as wide, glabrous; filaments 3–4 mm; anthers cream, 1 mm; style 3–4 mm. Nutlets ca. 3 mm, tuberculate (tubercles relatively low and wide).


Phenology: Flowering Mar–May.
Habitat: Seasonally wet meadows, rocky slopes and basins, often on serpentine soils
Elevation: 150-1700 m

Discussion

Of conservation concern.

Subspecies gracilis occurs in the Rogue River Valley in Josephine and Jackson counties and in Douglas County.

Selected References

None.

Lower Taxa

None.
tetrasporangiate +
extrorse +, introrse +  and dehiscing +
1 cm10 mm <br />0.01 m <br /> (?) +
truncate +  and emarginate +
Nancy R. Morin +
(Howell) Morin +
Limnanthes gracilis +
ternate +  and bipinnate +
lobed +  and entire +
ovate +  and linear-lanceolate +
150-1700 m +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
bowl +  and bell-shaped +
ridged +, subglobose +  and obovoid +
rugulose +, smooth +  and tuberculate +
Seasonally wet meadows, rocky slopes and basins, often on serpentine soils +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
shallowly 2-lobed +  and deeply 3-lobed +
dark-brown +  and gray +
tuberculate +
syncarpous +  and 2-5-carpellate +
5-lobed +
pink +, cream +  and white +
distinct +
1.25-2.1 times longer than sepals +
obovate +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Flowering Mar–May. +
colporate +, colpate +  and binucleate +
2-4-aperturate +
J. Bot. Res. Inst. Texas +
not arillate +
persistent +
list +  and count +
lanceolate-ovate +
accrescent +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
10 +  and 8 +
sprawling +  and decumbent +
0.3 cm3 mm <br />0.003 m <br /> (?) +  and 0.4 cm4 mm <br />0.004 m <br /> (?) +
Limnanthes alba subsp. gracilis +
Limnanthes alba +
subspecies +
dark-brown +  and gray +
pink +, lilac +, white +, drying +, dark yellow +  and purplish +
usually longer +
pubescent +  and glabrous +