Flora of North America species comparison

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Croton lindheimerianus var. lindheimerianus

Croton lindheimerianus var. tharpii
Photo is of parent taxon

threeseed croton
Photo is of parent taxon

Tharp's croton, Tharp's three-seed croton
Habit Plants densely velvety appressed-tomentose. Plants roughly tomentose.
Leaf

blades suborbiculate, length mostly less than 2 times width, apex rounded to broadly acute.

blades lanceolate, length mostly more than 2 times width, apex acute.
Pedicels

, at least some, recurved in fruit.

erect in fruit.

Croton lindheimerianus var. lindheimerianus

Croton lindheimerianus var. tharpii
Phenology Flowering May–Nov. Flowering Jul–Oct.
Habitat Floodplains, old pastures, loamy soils, roadsides. Loamy or rocky flats, limestone washes.
Elevation 50–600 m. (200–2000 ft.) 1000–1600 m. (3300–5200 ft.)
Distribution
from FNA
AR; AZ; IL; IN; KS; LA; MO; NC; NM; OK; SC; TX; Mexico (Coahuila, Nuevo León, Tamaulipas)
[BONAP county map]
from FNA
AZ; TX; Mexico (Coahuila)
[BONAP county map]
Discussion

Variety lindheimerianus is somewhat weedy and is adventive to central North Carolina, where it has persisted at the same site for over 50 years; it presumably is introduced also in South Carolina.

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

Variety tharpii is found in the flora area only in southern Arizona and western Texas.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 12, p. 219. FNA vol. 12, p. 219.
Parent taxa Euphorbiaceae > Croton > Croton lindheimerianus Euphorbiaceae > Croton > Croton lindheimerianus
Sibling taxa
C. lindheimerianus var. tharpii
C. lindheimerianus var. lindheimerianus
Synonyms C. eutrigynus
Name authority unknown M. C. Johnston: SouthW. Naturalist 3: 188. (1959)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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