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California pellitory, pelitory, rillita pellitory, unknown

spreading pellitory

Habit Herbs, annual, 0.2-5.5 dm. Herbs, perennial from crown, 1-8dm.
Stems

simple or freely branched, sometimes densely matted, prostrate, decumbent, ascending, or erect.

ascending, erect, or decumbent.

Leaf

blades narrowly to very broadly ovate, oblong, orbiculate, or reniform, 0.2-4.5 × 0.2-2.7 cm, base broadly cuneate, rounded, truncate, or nearly cordate, apex acuminate, acute, obtuse, or rounded;

proximal pair of lateral veins arising at junction of blade and petiole.

blades narrowly to broadly elliptic, lance-elliptic, or ovate, 1.3-9 × 0.8-4.5 cm, base attenuate, cuneate, or broadly rounded, apex abruptly acuminate to long-attenuate.

Flowers

involucral bracts 1-4.5 mm;

tepals 2-2.8 mm, shorter or longer than bracts.

involucral bracts 1.5-2.5 mm;

tepals ca. 2-3.5 mm, longer than bracts.

Achenes

light brown, symmetric, 0.9-1.2 × 0.6-0.7 mm, apex obtuse, mucro apical;

stipe centered, short-cylindric, basally dilated.

dark brown, symmetric, 1-1.2 × 0.6-0.9 mm, apex acute, mucro absent or minute;

stipe centered, on cylindric base.

Parietaria hespera

Parietaria judaica

Phenology Flowering all year, with peak in late winter–spring.
Habitat Cracks in sidewalks, ballast heaps, waste places, frequently about ports and coastal areas
Elevation 0-200 m (0-700 ft)
Distribution
from FNA
AZ; CA; NM; NV; UT; Mexico
[WildflowerSearch map]
from FNA
CA; FL; LA; MI; NJ; NY; PA; TX; Eurasia; n Africa [Introduced in North America]
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Parietaria judaica, which, in North America, is most abundant in scattered localities in California, is the only long-lived perennial species of Parietaria in the flora. Because of confusion in Europe over the correct name, plants in North America have been called P. judaica, P. officinalis of authors, not Linnaeus, P. officinalis var. erecta (Mertens & Koch) Weddell, and P. officinalis var. diffusa (Mertens & Koch) Weddell. For a clarification of the nomenclature and taxonomy of this complex, see C.C. Townsend (1968).

Parietaria judaica was first reported from Louisiana as P. diffusa Mertens & Koch, another name commonly used on herbarium specimens (J.W. Thieret 1969).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Tepals erect, loosely connivent, apex acute; leaf blades conspicuously longer than wide, base broadly cuneate, rounded, or truncate.
var. hespera
1. Tepals spreading or recurved and twisted at maturity, distinct, apex long-acuminate, attenuate, or caudate; leaf blades as long as or slightly longer than wide, base rounded to nearly cordate.
var. californica
Source FNA vol. 3. FNA vol. 3.
Parent taxa Urticaceae > Parietaria Urticaceae > Parietaria
Sibling taxa
P. floridana, P. judaica, P. pensylvanica, P. praetermissa
P. floridana, P. hespera, P. pensylvanica, P. praetermissa
Subordinate taxa
P. hespera var. californica, P. hespera var. hespera
Name authority B. D. Hinton: Sida 3: 293. (1969) Linnaeus: Fl. Palaest., 32. (1756)
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