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scented croton

Cortez's croton, palillo

Habit Shrubs, 2–5 dm, monoecious. Shrubs, 10–30 dm, dioecious.
Stems

dichotomously much branched proximally, coarsely stellate-tomentose.

di- or trichotomously branched, stellate-hairy, young stems often blackened by fungus.

Leaves

often clustered near inflorescences;

stipules each 5–10 glandular papillae, 0.2–0.5 mm;

petiole 0.5–1.5 cm, 1/4 leaf blade length, glands absent at apex;

blade obovate or ovate to broadly elliptic, 2–5.4 × 1–3.6 cm, base obtuse, margins entire, apex obtuse to acute, abaxial surface pale green to cream, adaxial surface darker green, both densely stellate-hairy.

not clustered;

stipules rudimentary;

petiole 1–1.5 cm, 1/6–1/3 leaf blade length, glands absent at apex;

blade narrowly obovate, oblong, elliptic, or lanceolate, 3–10 × 1–5 cm, mostly less than 3.5 times as long as wide, base subacute to rounded, margins minutely denticulate, apex acute or acuminate, abaxial surface light green, densely ochraceous stellate-hispid when young, pale stellate-hairy when mature, adaxial surface darker green, glabrous.

Inflorescences

bisexual or staminate, racemes, 1–3 cm, staminate flowers 6–10, pistillate flowers 1–3.

unisexual, racemes;

staminate 7–20 cm, flowers 10–30;

pistillate 1–5 cm, flowers 8–20(–30).

Pedicels

staminate 3–5 mm, pistillate 1–2 mm.

staminate 0–1 mm, pistillate 0–0.5 mm.

Staminate flowers

sepals 5, 2 mm, abaxial surface stellate-hairy;

petals 5, spatulate or obovate, 0.4–0.6 mm, abaxial surface densely villous at base and along margins, otherwise glabrous;

stamens 12–16.

sepals 5, 2.5 mm, abaxial surface stellate-hairy;

petals 5, oblong, 3 mm, abaxial surface glabrous except margins ciliate basally;

stamens 12–16.

Pistillate flowers

sepals 5, equal, 2.5 mm, margins entire, apex straight to slightly incurved, abaxial surface stellate-hairy;

petals glandular papillae;

ovary 3-locular;

styles 3, 4–6 mm, 2-fid to base, terminal segments 6.

sepals 5, equal, 1–1.5 mm, margins entire, apex straight to slightly incurved, abaxial surface stellate-hispid;

petals rudimentary;

ovary 3-locular;

styles 3, 4–5 mm, 2-fid, terminal segments 6.

Capsules

7–10 × 6–8 mm, smooth;

columella apex with 3 rounded, inflated lobes.

5–6 × 4.5–5.5 mm, smooth;

columella apex with 3 rounded, inflated lobes.

Seeds

5.5–7 × 4–5 mm, shiny.

4–5 × 3–3.5 mm, shiny (with silvery sheen).

2n

= 20.

Croton suaveolens

Croton cortesianus

Phenology Flowering Apr–Nov. Flowering Feb–Oct, possibly year-round.
Habitat Rocky slopes, foothills. Scrub forests.
Elevation 1500–2000 m. (4900–6600 ft.) 0–50 m. (0–200 ft.)
Distribution
from FNA
TX; Mexico (Coahuila, Chihuahua, Nuevo León)
[BONAP county map]
from FNA
TX; e Mexico; se Mexico; Central America
[BONAP county map]
Discussion

Croton suaveolens is found in the flora area only in trans-Pecos Texas.

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

Croton cortesianus is known in the flora area only from Cameron, Hidalgo, and Starr counties.

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

Source FNA vol. 12, p. 224. FNA vol. 12, p. 213.
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. texensis, C. wigginsii
C. alabamensis, C. argenteus, C. argyranthemus, C. californicus, C. capitatus, C. ciliatoglandulifer, 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. texensis, C. wigginsii
Synonyms C. chichenensis, C. trichocarpus
Name authority Torrey: in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 194. (1859) Kunth: in A. von Humboldt et al., Nov. Gen. Sp. 2(fol.): 66; 2(qto.): 83. (1817)
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