Flora of North America species comparison

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Hornungia procumbens

hutchinsia, oval purse, prostrate hutchinsia
Habit Plants glabrous throughout or puberulent, trichomes usually minutely forked, some simple.
Stems

(0.2–)0.5–2.2(–3) dm.
Basal leaves

petiole (0.2–)0.5–1.2(–2) cm;

blade obovate, oblanceolate, or oblong, (0.2–)1–2.5(–4) cm × (1–)5–11(–16) mm, base cuneate or attenuate, apex acute or obtuse.
Cauline leaves

(distal) subsessile;

blade similar to basal (smaller distally).
Racemes

few- to several-flowered (rachis straight or slightly flexuous in fruit).
Flowers

sepals 0.6–1.1 × 0.4–0.6 mm;

petals 0.6–1.2 × 0.3–0.6 mm;

filaments (white), 0.5–1 mm;

anthers ca. 0.1 mm.
Fruiting pedicels

3–8(–12) mm.
Fruits

(0.2–)0.3–0.4(–0.5) cm × (1–)1.4–2.2 mm, apex subtruncate to slightly emarginate.
Seeds

0.5–0.6 × 0.3–0.4 mm.
2n

= 12, 24.

Hornungia procumbens
Phenology Flowering Feb–Jul.
Habitat Deserts, meadows, shade of bushes, disturbed habitats, waste places, saline banks, salt marshes, sagebrush plains, alkaline flats, slopes
Elevation 0-2600 m (0-8500 ft)
Distribution
from FNA
CA; CO; ID; MT; NV; OR; UT; WA; WY; BC; MB; NF; SK; Europe; Asia; n Africa [Introduced in North America; introduced also in Mexico, South America, s Africa, Australia]
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Discussion

Hornungia procumbens is highly variable, especially in fruit size and shape, number of seeds per fruit, indumentum, plant size, and shape and number of leaf divisions. Many of its morphological extremes were recognized at specific and infraspecific ranks, and more than 40 synonyms exist.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 7, p. 530.
Parent taxa Brassicaceae > tribe Descurainieae > Hornungia
Synonyms Lepidium procumbens, Capsella elliptica, Capsella procumbens, Hutchinsia procumbens, Hymenolobus divaricatus, Hymenolobus erectus, Hymenolobus procumbens, Noccaea procumbens, Thlaspi procumbens
Name authority (Linnaeus) Hayek: Repert. Spec. Nov. Regni Veg. Beih. 30: 480. (1925)
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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