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Florida keys noseburn

Jones' noseburn

Habit Herbs or subshrubs, 1.2–3.5 dm. Subshrubs, 4–5 dm.
Stems

erect, green, apex flexuous.

decumbent, trailing, or erect, green to gray-green, apex flexuous.

Leaves

petiole 5–13 mm;

blade suborbiculate to ovate, 1.2–3 × 1–2.3 cm, base subcordate, margins dentate to serrate, apex acute.

petiole 3–10(–15) mm;

blade ovate to triangular-ovate, 0.9–2(–3) × 0.5–1.5(–2) cm, base deeply cordate, margins serrate, apex acute.

Inflorescences

terminal (often appearing leaf opposed), glands absent, staminate flowers 12–20 per raceme;

staminate bracts 0.8–1.2 mm.

terminal (often appearing leaf-opposed), glands stipitate, prominent throughout, staminate flowers 10–30 per raceme;

staminate bracts 0.8–1 mm.

Pedicels

staminate 1.5–1.9 mm, persistent base 0.5–0.7 mm;

pistillate 3.2–3.7 mm in fruit.

staminate 2.2–2.4 mm, persistent base 1.8–2 mm;

pistillate 7–11 mm in fruit.

Staminate flowers

sepals 3–4, green, 1–1.5 mm;

stamens 3–4, filaments 0.4–0.6 mm.

sepals 3–4, green, 0.9–1.1 mm;

stamens 2–3, filaments 0.2–0.3 mm.

Pistillate flowers

sepals lanceolate, 1.5–3 mm;

styles connate 1/4–1/3 length;

stigmas undulate.

sepals ovate, 1.5 mm;

styles connate 1/3–1/2 length;

stigmas undulate to subpapillate.

Capsules

6–7 mm wide.

5 mm wide.

Seeds

dark brown with light brown streaks, 2.4–3 mm.

mottled brown-purple, 2.5–3 mm.

Tragia saxicola

Tragia jonesii

Phenology Flowering late winter–fall; fruiting spring–early winter. Flowering spring–summer; fruiting summer–fall.
Habitat Dry pinelands and hammocks on limestone substrates. Sonoran desert scrub.
Elevation 0–10 m. (0–0 ft.) 10-–900 m. (0-–3000 ft.)
Distribution
from FNA
FL
[BONAP county map]
from FNA
AZ; Mexico (Baja California Sur, Sonora)
Discussion

Tragia saxicola occurs in south Florida and the Florida Keys. Although similar to T. smallii in its suborbiculate leaf blades, it differs in having longer petioles and smaller seeds.

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

In the flora area, Tragia jonesii is confined to Pima County in southern Arizona. Identified as T. amblyodonta in several floras, it differs from that species by its stipitate glands and twining habit. Tragia jonesii resembles T. glanduligera from southern Texas and eastern Mexico in the presence of stipitate glands, but differs in leaf blade shape and base, the number of teeth on the leaf blade margin (4–9 teeth per side in T. jonesii, 10–15 teeth per side in T. glanduligera), and the longer fruiting pedicel.

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

Source FNA vol. 12, p. 189. FNA vol. 12, p. 187.
Parent taxa Euphorbiaceae > Tragia Euphorbiaceae > Tragia
Sibling taxa
T. amblyodonta, T. betonicifolia, T. brevispica, T. cordata, T. glanduligera, T. jonesii, T. laciniata, T. leptophylla, T. nepetifolia, T. nigricans, T. ramosa, T. smallii, T. urens, T. urticifolia
T. amblyodonta, T. betonicifolia, T. brevispica, T. cordata, T. glanduligera, T. laciniata, T. leptophylla, T. nepetifolia, T. nigricans, T. ramosa, T. saxicola, T. smallii, T. urens, T. urticifolia
Synonyms T. scandens
Name authority Small: Fl. S.E. U.S. 702, 1333. (1903) Radcliffe-Smith & Govaerts: Kew Bull. 52: 480. (1997)
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