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blue milkwort

Habit Herbs, sometimes somewhat suffrutescent, (0.5–)0.8–6(10) dm.
Stems

usually erect, sometimes laxly so (rarely procumbent), hairs incurved (rarely glabrate).

Leaves

blade ovate, elliptic, spatulate, or linear proximally, to elliptic, lanceolate, or linear distally (often longer than proximal ones), 4–45(–65) × 1.5–4(–6) mm, base usually acute, sometimes cuneate or obtuse, apex acute to acuminate or obtuse, surfaces not translucent-punctate, hairs incurved.

Inflorescences

terminal or leaf-opposed, racemes, loose, 2–12 × 0.9–1.4 cm;

peduncle 0.5–1.5 cm;

bracts linear to narrowly ovate.

Pedicels

1–5 mm, pubescent.

Flowers

purplish, wings rarely yellow, keel distally yellow or yellowish green, 3.5–6 mm;

sepals lanceolate, 2.2–3.5 mm;

wings ovate to suborbiculate, 3.5–5.5 × 2.4–4 mm, sparsely pubescent;

keel 4–5.7 mm, pubescent.

Capsules

oblong, oblong-ovoid, broadly ellipsoid, or subglobose, 5–10(–11) ×4–7 mm, not translucent-punctate, glabrous and ciliolate, margins sometimes narrowly winged.

Seeds

4–4.5 mm;

aril 0.6–1 mm, lobes vestigial or to 1/4 length of seed.

2n

= 30.

Hebecarpa barbeyana

Phenology Flowering spring–late fall.
Habitat Gravelly or rocky soils, mostly limestone, or igneous or gypsum, arid or semi-arid scrub, open woodlands, chaparral.
Elevation 400–2400(–2800) m. (1300–7900(–9200) ft.)
Distribution
from FNA
AZ; NM; TX; Mexico (Coahuila, Durango, Guanajuato, Jalisco, Nuevo León, Querétaro, San Luis Potosí, Veracruz, Zacatecas)
[BONAP county map]
Discussion

Hebecarpa barbeyana is very similar to 7. H. rectipilis; see that species for comments.

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

Source FNA vol. 10.
Parent taxa Polygalaceae > Hebecarpa
Sibling taxa
H. macradenia, H. obscura, H. ovatifolia, H. palmeri, H. punctata, H. rectipilis
Synonyms Polygalabarbeyana chodat, P. longa, P. racemosa, P. reducta
Name authority (Chodat) J. R. Abbott: J. Bot. Res. Inst. Texas 5: 134. (2011)
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