Lessingia glandulifera var. peirsonii

(J. T. Howell) Markos

Madroño 52: 60. 2005.

Common names: Peirson’s lessingia
Endemic
Basionym: Lessingia germanorum var. peirsonii J. T. Howell Univ. Calif. Publ. Bot. 16: 26, figs. 25–30. 1929
Synonyms: Lessingia lemmonii var. peirsonii (J. T. Howell) Ferris
Treatment appears in FNA Volume 20. Treatment on page 454.

Stems villous to tomentose. Abaxial leaf faces tomentose. Involucres obconic, 5–6 mm. Phyllaries tomentose. Disc-florets 10–25; style-branch appendages lanceolate, 0.6–1.3 mm. 2n = 10.


Phenology: Flowering May–Sept.
Habitat: Dry foothills, desert washes, roadsides, usually sandy soils
Elevation: 900–2100 m

Discussion

Variety peirsonii is known from the northwestern Transverse Range (northwestern Los Angeles and south-central Kern counties), the Piute Mountains (Kern County), and the western Mojave Desert (eastern Kern County). The leaves have a dense tomentum that is only partly lost in age. The involucres are persistently tomentose.

Selected References

None.

Lower Taxa

None.
villous +  and woolly +
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Staci Markos +
(J. T. Howell) Markos +
decurrent +
Lessingia germanorum var. peirsonii +
obovate;lanceolate linear or subulate +
rugulose +  and muricate +
barbellulate +  and barbellate +
Peirson’s lessingia +
not 2-lipped +  and actinomorphic +
5-10-nerved +  and smooth +
beaked +, 2-ribbed +  and 5-ribbed +
not compressed +, cuneiform +  and linear +
fertile +  and bisexual +
fertile +  and bisexual +
900–2100 m +
puberulent +  and pilose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry foothills, desert washes, roadsides, usually sandy soils +
in more or less corymbiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
spreading;erect +
lanceolate +
dentate to pinnately lobed +  and entire +
2-carpellate +
white +  and tan +
persistent +
connate +  and distinct +
Flowering May–Sept. +
gland-dotted +  and green +
recurved +  and erect +
lanceolate +, ovate +  and oblong +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
branched +  and simple +
villous +  and tomentose +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
appendaged +  and truncate +
papillate +  and smooth +
Lessingia lemmonii var. peirsonii +
Lessingia glandulifera var. peirsonii +
Lessingia glandulifera +
variety +
2 cm20 mm <br />0.02 m <br /> (90 cm900 mm <br />0.9 m <br />) +