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annual abronia, trans montane abronia, trans montane sand verbena

large-fruit sand-verbena

Habit Plants annual, infrequently perennial. Plants perennial.
Stems

decumbent to ascending, much branched, elongate, reddish at least basally, glandular-pubescent, rarely glabrous or viscid-pubescent.

ascending to semierect, slightly to moderately branched, elongate, glandular-pubescent to viscid.

Leaves

petiole 1–4.5 cm;

blade broadly ovate to orbiculate, 1–5 × 0.5–3 cm, margins entire or ± repand and undulate, surfaces glabrous or sparsely glandular-pubescent.

petiole 0.5–4 cm;

blade ovate to elliptic, 2–5 × 1.5–3.5 cm, margins entire or occasionally ± repand and slightly undulate, surfaces glandular-puberulent.

Inflorescences

peduncle longer than subtending petiole;

bracts lanceolate to ovate, 3–10 × 1–5 mm, papery, puberulent to densely glandular-pubescent;

flowers 15–35.

peduncle longer than subtending petiole;

bracts ovate to elliptic, 7–13 × 4–6 mm, papery, glandular-pubescent;

flowers 20–75.

Perianth

tube greenish to coral pink, 6–18 mm, limb white to pale pink, 5–8 mm diam.

tube pink to magenta, 18–32 mm, limb magenta, 8–10 mm diam.

Fruits

winged, turbinate, 3–8 × 3–6 mm, coriaceous, apex broadly tapered to prominent beak;

wings (2–)5 (when 2, folded together) truncate distally with conspicuous dilations, cavities extending throughout.

broadly turbinate or cordate in profile, 8–15 × 6–12 mm, 0.7–2 times as long as wide, scarious, with a low, conic, inconspicuous beak at apex;

wings 5, often twisted, usually smooth, occasionally rugose, not reticulate veined at apex, without cavities.

Abronia turbinata

Abronia macrocarpa

Phenology Flowering spring–fall. Flowering spring, opportunistically after summer rains.
Habitat Sandy soils, desert scrub Sand dunes
Elevation 900-2500 m (3000-8200 ft) 100 m (300 ft)
Distribution
from FNA
CA; NV; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
TX
[BONAP county map]
Discussion

Of conservation concern.

Abronia macrocarpa is on the United States endangered species list; and it is in the Center for Plant Conservation’s National Collection of Endangered Plants.

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

Source FNA vol. 4, p. 66. FNA vol. 4, p. 63.
Parent taxa Nyctaginaceae > Abronia Nyctaginaceae > Abronia
Sibling taxa
A. alpina, A. ameliae, A. ammophila, A. angustifolia, A. argillosa, A. bigelovii, A. bolackii, A. carletonii, A. elliptica, A. fragrans, A. latifolia, A. macrocarpa, A. maritima, A. mellifera, A. nana, A. pogonantha, A. umbellata, A. villosa
A. alpina, A. ameliae, A. ammophila, A. angustifolia, A. argillosa, A. bigelovii, A. bolackii, A. carletonii, A. elliptica, A. fragrans, A. latifolia, A. maritima, A. mellifera, A. nana, A. pogonantha, A. turbinata, A. umbellata, A. villosa
Name authority Torrey ex S. Watson: Botany (Fortieth Parallel), 285, plate 31, figs. 1–5, 8, 9. (1871) L. A. Galloway: Brittonia 24: 148, fig. 1. (1972)
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