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Ambrosia salsola (Torr. & A. Gray) Strother & B. G. Baldwin  

No occurrences found

Family: Asteraceae
burrobrush, more...burrobrush
[Hymenoclea salsola Torr. & A. Gray, moreHymenoclea salsola var. salsola]
Ambrosia salsola image
L.R. Landrum
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John L. Strother in Flora of North America (vol. 21)
Shrubs, 20-80(-150+) cm. Stems erect. Leaves mostly alternate; petioles 0; blades mostly filiform, 15-35(-65+) × 0.5-1.5 mm, sometimes with 3(-5+) filiform lobes, abaxial faces sparsely scabrellous, glabrescent, often vernicose, adaxial faces densely scabrellous (white). Pistillate heads ± intermixed with staminates; florets 1. Staminate heads: peduncles 0-0.5 mm; involucres ± cup-shaped, 1-3(-4) mm diam., ± glabrate, ± vernicose or gland-dotted; florets 5-15+. Burs: bodies plumply fusiform, 3-4(-6) mm, stipitate-glandular, wings 5-20+, ± scattered, broadly cuneiform, flabellate, or orbiculate, 3-4(-6) × 2-4(-8) mm. 2n = 36. Flowering Mar-May(-Jun). Desert washes, sandy and gravelly benches, lava talus; 200-1800 m; Ariz., Calif., Nev., Utah; Mexico (Baja California, Sonora). Variety salsola refers to plants bearing burs with 6-14 wings in 2-3+ cycles, their tips ± spreading to patent; var. pentalepis (Rydberg) Strother & B. G. Baldwin refers to plants bearing burs with 5-9(-13) wings in 1(-2) cycles, their tips ± spreading to patent; var. fasciculata (A. Nelson) Strother & B. G. Baldwin [= Hymenoclea salsola var. patula (A. Nelson) K. M. Peterson & W. W. Payne, an illegitimate name] refers to plants bearing burs with 10-18 wings in 2-3+ cycles, their tips antrorsely ± appressed (see K. M. Peterson and W. W. Payne 1973).

Hybrids between Ambrosia salsola and A. dumosa have been called A. ×platyspina (Seaman) Strother & B. G. Baldwin.

Wiggins 1964, Benson and Darrow 1981, Kearney and Peebles 1969
Common Name: burrobrush Duration: Perennial Nativity: Native Lifeform: Subshrub Wetland Status: UPL General: Rounded, often straggly shrub 1-2.5 m tall with stramineous bark and slender, striate, sparsely and finely pubescent branches. Leaves: Alternate, filiform, 5-35 mm long, about 0.5 mm wide, subterete, minutely pilosulous. Flowers: Staminate heads above pistillate heads or intermingled, sessile; staminate involucres 15-20 flowered, 3-4 mm wide, 5-7 rounded lobes, crenate, finely pilosulous; receptacular paleae broadly spatulate, pinnately veined; staminate corollas funnelform, puberulent; pistillate heads subtended by 1 to several linear bractlets. Fruits: Cypselae 6 mm long, with 7-12 wings in several series, beak about 2 mm long, wings reniform, narrowed to petiole-like base; sometimes in imperfect spiral. Ecology: Found along sandy washes and on rocky slopes, rarely in saline soil below 4,000 ft (1219 m); flowers March-May. Distribution: s UT, AZ, and s CA; south to nw MEX. Notes: Look for this species under Hymenoclea salsola in older literature. Spirally arranged wings can help to distinguish this species, as can its small size and rounded growth form. Ethnobotany: Unknown, other species in this genera have uses. Etymology: Hymenoclea is from hymen -membrane- and kleio -to encose, while salsola comes from the Latin salsus for salty. Synonyms: Hymenoclea salsola Editor: SBuckley, 2010
Ambrosia salsola image
L.R. Landrum
Ambrosia salsola image
L.R. Landrum
Ambrosia salsola image
Liz Makings
Ambrosia salsola image
Ries Lindley
Ambrosia salsola image
Liz Makings
Ambrosia salsola image
Fred Fisher
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