Limnanthes douglasii subsp. striata

(Jepson) Morin

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

Basionym: Limnanthes striata Jepson Fl. Calif. 2: 411. 1936
Treatment appears in FNA Volume 7. Treatment on page 178. Mentioned on page 174, 176, 177, 179.

Leaflets: blade linear to ovate, margins entire, irregularly toothed, or 2-lobed or 3-lobed. Flowers funnel-shaped; sepals linear-lanceolate, 4–6 (–7) mm; petals white with greenish yellow bases (veins usually dark), spatulate (with narrow claw and narrowly ovate blade), 8–17 mm (apex truncate to slightly emarginate); filaments 2–4 mm; anthers usually cream, rarely dark, almost round, 0.8–1 mm. Tubercles absent or not, light-brown, pinkish, or gray, rounded, blunt, lamellar, or conic. 2n = 10.


Phenology: Flowering Apr.
Habitat: Vernal pools, stream edges
Elevation: 0-800 m

Discussion

C. T. Mason (1952) treated Limnanthes striata as a distinct species and suggested that it is closely related to L. douglasii and possibly should be included there. R. V. Kesseli and S. K. Jain (1984b) found the “striata” cluster to be an integral component of the “douglasii” complex. They identified two populations that keyed as subsp. striata but did not share alleles with other populations of subsp. striata. Of the two populations, the one in the eastern foothills of the Coast Range near Junction City, Trinity County, had fleshy sepals and long pedicels. The other population is in Bear Valley, Mariposa County, at the highest and southernmost point of the distribution of subsp. striata. The Bear Valley population has relatively small flowers with relatively short petals, but relatively longer sepals and dense hairs on the sepals and leaves. Kesseli (pers. comm.) reported that he was unable to cross subsp. striata with other L. douglasii subspecies and had not seen hybrids in the field. Subspecies striata warrants further study.

Selected References

None.

Lower Taxa

None.
tetrasporangiate +
dark +  and cream +
extrorse +, introrse +  and dehiscing +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
obcordate +  and truncate +
Nancy R. Morin +
(Jepson) Morin +
greenish yellow +
Limnanthes striata +
ternate +  and bipinnate +
lobed +  and entire +
linear +  and ovate +
0-800 m +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
funnel--shaped +
funnel--shaped +  and bell +
ridged +, subglobose +  and obovoid +
rugulose +, smooth +  and tuberculate +
Vernal pools, stream edges +
3-lobed +, 2-lobed +, toothed +  and entire +
gray +, black +  and dark-brown +
tuberculate +
syncarpous +  and 2-5-carpellate +
5-lobed +
distinct +
usually longer +
spatulate +
0.8 cm8 mm <br />0.008 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
Flowering Apr. +
colporate +, colpate +  and binucleate +
2-4-aperturate +
J. Bot. Res. Inst. Texas +
whitish +, gray +, pinkish +  and brown +
blunt +, rounded +, conical +  and planar +
not arillate +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
persistent +
list +  and count +
linear-lanceolate +
not accrescent +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Illustrated +  and Endemic +
10 +  and 8 +
sprawling +  and decumbent +
ascending +  and erect +
0.3 cm3 mm <br />0.003 m <br /> (?) +  and 0.8 cm8 mm <br />0.008 m <br /> (?) +
Limnanthes sect. Reflexae +
Limnanthes douglasii subsp. striata +
Limnanthes douglasii +
subspecies +
gray +, pinkish +  and light-brown +
conic +, blunt +  and rounded +
pale-yellow +, chartreuse +, pink +, lilac +, drying +, cream +, white +, rose +, purplish +  and translucent +
35 cm350 mm <br />0.35 m <br /> (100 cm1,000 mm <br />1 m <br />) +
pubescent +  and glabrous +