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annual abronia, trans montane abronia, trans montane sand verbena

bolack's sand verbena

Habit Plants annual, infrequently perennial. Plants perennial, short caulescent or nearly acaulescent.
Stems

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

decumbent to erect, minutely and sparsely glandular-pubescent or ± glabrate, arising from cordlike rhizomes.

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 1–4 cm;

blade elliptic-oblong to ovate, 1–4 × 0.5–2 cm, margins entire to shallowly sinuate, often ± undulate, surfaces minutely puberulent or glabrous (especially in age).

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 broadly lanceolate, ovate, obovate, or almost round, 5–10 × 3–10 mm, scarious, apex acute, obutse, or rounded, glandular-puberulent;

flowers 15–25.

Perianth

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

tube greenish, 7–11 mm, limb white, 3 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, 5–7 × 3–5 mm, scarious, apex truncate and slightly beaked;

wings (3–)5, dilated distally and ± flattened perpendicular to plane of lamina, dilations ± as long as wide, thin walled, cavities extending throughout.

Abronia turbinata

Abronia bolackii

Phenology Flowering spring–fall. Flowering spring–summer.
Habitat Sandy soils, desert scrub Gypseous sandy or gravelly soils, open areas, among sparse shrubs
Elevation 900-2500 m (3000-8200 ft) 1700 m (5600 ft)
Distribution
from FNA
CA; NV; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
NM
[BONAP county map]
Discussion

As far as is known, Abronia bolackii is restricted to gypseous lenses of the Ojo Alamo Formation in San Juan County, New Mexico.

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

Source FNA vol. 4, p. 66. FNA vol. 4, p. 64.
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. carletonii, A. elliptica, A. fragrans, A. latifolia, A. macrocarpa, 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) N. D. Atwood: Novon 12: 167, fig. 1. (2002)
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