Flora of North America species comparison

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Halimolobos pubens
Habit Annuals or biennials; (base not woody).
Stems

erect, unbranched or branched distally, (2–)3–7.5(–11.5) dm, trichomes sessile.
Basal leaves

petiole 0.4–2 cm;

blade oblanceolate to oblong, 2–8(–11) cm × 05–20(–30) mm, margins coarsely dentate or somewhat pinnatifid, surfaces with sessile trichomes.
Cauline leaves

sessile;

blade oblong to oblanceolate, 1.5–5(–6) cm × 3–12(–15) mm (smaller distally), base truncate or broadly cuneate, margins coarsely dentate, pubescent as basal.
Racemes

considerably elongated in fruit.
Flowers

sepals widely spreading, 1.5–2.5 × 1–1.5 mm;

petals spatulate, 1.5–2.5 × 0.7–1.2 mm, claw obscurely differentiated from blade, to 1 mm;

filaments spreading, 1.5–2.5 mm, equal to petals;

anthers 0.7–1 mm.
Fruiting pedicels

divaricate, (slightly curved upward or straight), (6–)8–15(–18) mm, (trichomes appressed).
Fruits

ascending, straight, not torulose, oblong to ovoid, slightly angustiseptate to subterete, 0.5–0.8(–0.9) cm × 3–4(–5) mm;

ovules (60–)70–110 per ovary;

style 0.3–0.8(–1) mm.
Seeds

biseriate, 0.6–0.8 × 0.4–0.5 mm.

Halimolobos pubens
Phenology Flowering late Apr-early Aug.
Habitat Spring-fed areas, canyons, draws, streamsides, shaded moist grounds, grassy plains, creek beds, tobosa flats
Elevation 1200-1500 m (3900-4900 ft)
Distribution
from FNA
AZ; TX; Mexico (Coahuila, Sonora)
[BONAP county map]
Discussion

Halimolobos pubens appears to be restricted in Texas to Brewster, Jeff Davis, Presidio, and Reeves counties. It has recently been reported from Cochise County, Arizona. For a detailed discussion of its generic disposition, see C. D. Bailey et al. (2007).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 7, p. 559.
Parent taxa Brassicaceae > tribe Halimolobeae > Halimolobos
Sibling taxa
H. diffusa, H. jaegeri
Synonyms Hymenolobus pubens, Capsella pubens, Mancoa pubens, Poliophyton pubens
Name authority (A. Gray) Al-Shehbaz & C. D. Bailey: Syst. Bot. 32: 146. (2007)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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