Flora of North America species comparison

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Croton texensis

Croton leucophyllus

doveweed, goatweed, skunkweed, Texas croton

two-color croton
Habit Herbs, annual, 2–7(–9) dm, dioecious.
Stems

loosely branched distally, stellate-hairy.

Leaves

not clustered;

stipules absent;

petiole 0.3–2 cm, glands absent at apex;

blade narrowly ovate-oblong to linear-lanceolate, 1–5 × 0.5–2 cm, base truncate to rounded or subcordate, margins entire, apex rounded to acute, abaxial surface pale green, densely whitish appressed stellate-hairy, adaxial surface darker green, less hairy.

Inflorescences

unisexual;

staminate racemes or irregularly branched panicles, 2–8 cm, flowers 10–30;

pistillate racemes, 1–2 cm, flowers 1–6.

Pedicels

staminate 2–3 mm, pistillate 1–3 mm.

Staminate flowers

sepals 5, 1–2 mm, abaxial surface densely whitish appressed stellate-hairy;

petals 0;

stamens 8–12.

Pistillate flowers

sepals 5, equal, 1–1.5 mm, margins entire, apex incurved, abaxial surface densely stipitate-stellate-hairy;

petals 0;

ovary 3-locular;

styles 3, 1–2 mm, multifid, terminal segments 12–32+.

Capsules

5–8 × 4–5.5 mm, verrucose;

columella 3-winged.

Seeds

3.5–4 × 2.5–3 mm, shiny.

2n

= 28.

Croton texensis

Croton leucophyllus
Phenology Flowering Jun–Nov.
Habitat Prairies, sandy creek beds, old fields, canyons, disturbed areas.
Elevation 50–2000 m. (200–6600 ft.)
Distribution
from FNA
AL; AZ; CO; DE; FL; IA; IL; KS; MD; MO; NE; NM; OK; SD; TX; UT; WI; WV; WY; Mexico (Chihuahua, Sonora)
[WildflowerSearch map]
[BONAP county map]
from FNA
TX; ne Mexico
[BONAP county map]
Discussion

Croton texensis, despite being annual, grows larger than the related perennial C. dioicus. Croton texensis has verrucose fruits similar to those of the closely related C. parksii.

There is a single specimen of Croton texensis from Massachusetts, collected at a dump in Boston in 1890, but the species did not become established there.

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

Varieties 2 (1 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 12, p. 224. FNA vol. 12, p. 218.
Parent taxa Euphorbiaceae > Croton Euphorbiaceae > Croton
Sibling taxa
C. alabamensis, C. argenteus, C. argyranthemus, C. californicus, C. capitatus, C. ciliatoglandulifer, C. cortesianus, C. coryi, C. dioicus, C. elliottii, C. fruticulosus, C. glandulosus, C. heptalon, C. humilis, C. incanus, C. leucophyllus, C. lindheimeri, C. lindheimerianus, C. linearis, C. michauxii, C. monanthogynus, C. parksii, C. pottsii, C. punctatus, C. sancti-lazari, C. setigerus, C. soliman, C. sonorae, C. suaveolens, C. wigginsii
C. alabamensis, C. argenteus, C. argyranthemus, C. californicus, C. capitatus, C. ciliatoglandulifer, C. cortesianus, C. coryi, C. dioicus, C. elliottii, C. fruticulosus, C. glandulosus, C. heptalon, C. humilis, C. incanus, C. lindheimeri, C. lindheimerianus, C. linearis, C. michauxii, C. monanthogynus, C. parksii, C. pottsii, C. punctatus, C. sancti-lazari, C. setigerus, C. soliman, C. sonorae, C. suaveolens, C. texensis, C. wigginsii
Subordinate taxa
C. leucophyllus var. leucophyllus
Synonyms Hendecandra texensis, C. luteovirens, C. texensis var. utahensis, C. virens Oxydectes leucophylla
Name authority (Klotzsch) Müller Arg.: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 15(2): 692. (1866) Müller Arg.: Linnaea 34: 139. (1865)
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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