Galinsoga parviflora var. semicalva

A. Gray

Smithsonian Contr. Knowl. 5(6): 98. 1853.

Synonyms: Galinsoga semicalva (A. Gray) H. St. John & D. White
Treatment appears in FNA Volume 21. Treatment on page 181.

Plants 4–35 cm. Leaf-blades lanceolate to ovate, 7–55 (–80) × 3–20 mm, margins usually entire or serrulate, sometimes serrate. Arrays of heads congested. Axillary peduncles shorter than subtending bractlets. 2n = 32.


Phenology: Flowering summer–fall.
Habitat: Rocky slopes
Elevation: 1800–2700 m

Distribution

V21-445-distribution-map.gif

Ariz., N.Mex., Tex., Mexico

Discussion

Plants of var. semicalva are less branched and usually have narrower leaves and shorter axillary peduncles than those of var. parviflora. They are found above 1500 m as far south as Distrito Federal, Mexico. Morphologic intermediates between the diploid var. parviflora and the tetraploid var. semicalva occur throughout the range of var. semicalva.

Selected References

None.

Lower Taxa

None.
not tailed +, rounded +  and obtuse +
darkened +  and pale +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Judith M. Canne-Hilliker +
A. Gray +
decurrent +
compound +  and simple +
lanceolate;broadly ovate +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
strigose +  and glabrous +
obconic +  and obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
strigose +  and glabrous +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Ariz. +, N.Mex. +, Tex. +  and Mexico +
1800–2700 m +
glabrate +  and densely pilose +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Rocky slopes +
discoid +  and radiate +
in loose to tight +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
campanulate +
0.5mm;1.8mm +
0.7mm;1.5mm +
5.5 cm55 mm <br />0.055 m <br /> (8 cm80 mm <br />0.08 m <br />) +
7 cm70 mm <br />0.07 m <br /> (8 cm80 mm <br />0.08 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (2 cm20 mm <br />0.02 m <br />) +
serrate +, serrulate +  and entire +
2-carpellate +
persistent +
inner +  and outer +
3-lobed;lanceolate;ovate or obovate +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
entire +  and erose +
gray +  and white +
persistent +
fimbriate +
0.1 cm1 mm <br />0.001 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering summer–fall. +
unequal +  and subequal +
Smithsonian Contr. Knowl. +
of 5;10 , laciniate scales +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
bearing subulate enations +, hairy +  and bristly +
15 +  and 20 +
obtuse +, fimbriate +  and laciniate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
exalbuminous +
Weedy +  and Illustrated +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Galinsoga semicalva +
Galinsoga parviflora var. semicalva +
Galinsoga parviflora +
variety +
cylindric +
toothed +  and entire +
2 cm20 mm <br />0.02 m <br /> (62 cm620 mm <br />0.62 m <br />) +