Collinsia bartsiifolia var. davidsonii

(Parish) Newsom

Bot. Gaz. 87: 272. 1929.

Endemic
Basionym: Collinsia davidsonii Parish Zoë 4: 147. 1893
Treatment appears in FNA Volume 17. Treatment on page 72.

Plants 5–20 (–25) cm. Inflorescences not or scarcely glandular. Flowers: corolla usually white to pale lavender, wings and keel often pinkish, 9–14 mm, glabrous; banner length 0.7–0.9+ times wings, wings obovate, notched. 2n = 14.


Phenology: Flowering Apr–Jun.
Habitat: Open, sandy places, rarely on serpentine soils.
Elevation: 500–1300 m.

Discussion

Variety davidsonii is known from drier regions east of the South Coast and Transverse ranges. Some collections suggest a relationship between precipitation and corolla size; others are of intermediate size and difficult to separate from var. bartsiifolia. The two varieties, in general, are not sympatric.

Some populations of var. davidsonii near New Idria and San Benito Mountain in San Benito County occur on serpentine soil. In those populations, banners are slightly reduced relative to those of plants in nearby populations found in sandy habitats.

Selected References

None.

Lower Taxa

None.
hairy +  and glabrous +
Michael S. Park +
(Parish) Newsom +
less oblong;obovate entire or notched +
0.7-0.9+ times wings +
glandular +  and glabrous +
toothed +  and oblong +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
glandular +  and glabrous +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
alternate +, opposite +, whorled +, helical +  and subopposite +
Collinsia davidsonii +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
lanceolate-oblong;oblong +
not leathery +  and not fleshy +
usually white +  and pale lavender +
spreading;reflexed +
0.5 cm5 mm <br />0.005 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
drupe-like +
500–1300 m. +
curved +  and straight +
hairy +  and glabrous +
1 +  and 4 +
oblong +  and ovate +
loculicidal +  and septicidal +
Open, sandy places, rarely on serpentine soils. +
terminal +  and axillary +
glandular +  and shaggy-hairy +
white-hairy +  and glabrous +
0.9 cm9 mm <br />0.009 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
persistent +  and deciduous +
deltate;ovate +
3-6-flowered +
4-locular +, 1-locular +  and 2-locular +
axile +  and parietal +
basal +, apical +  and superior +
tenuinucellate +, unitegmic +  and hemitropous +
campylotropous +, hemianatropous +  and anatropous +
ascending +  and spreading +
5 +  and 4 +
Flowering Apr–Jun. +
minute +
cinnamon red +, brown +  and reddish-brown +
hourglass--shaped +, prismatic +, oblong +  and ovate +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
cupshaped +  and campanulate +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
erect;ascending or decumbent +
hairy +  and glabrous +
Collinsia bartsiifolia var. davidsonii +
Collinsia bartsiifolia +
variety +
gibbous +  and saccate +
longer than diam +
5 cm50 mm <br />0.05 m <br /> (35 cm350 mm <br />0.35 m <br />) +
20 cm200 mm <br />0.2 m <br /> (25 cm250 mm <br />0.25 m <br />) +
biennial +, perennial +  and annual +
2 +  and 7 +
notched +  and obovate +
0.9 cm9 mm <br />0.009 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +