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In the flora area, Hulsea mexicana grows in southern San Diego County.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 396, 397 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Description

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Annuals or biennials, (20–)40–100 cm. Stems 1–3, glandular. Leaves mostly cauline; blades green, oblanceolate to spatulate, 5–14 cm, margins dentate, faces glandular-villous; distal cauline leaves broadly oblanceolate to ovate, gradually reduced. Heads 3–5. Involucres hemispheric, 15–27 mm diam. Phyllaries 8–12 mm, outer narrowly lanceolate, apices acuminate. Ray florets 20–35; corolla tubes glabrous; laminae yellow (narrowly elliptic to narrowly oblong-lanceolate), 10–12 mm. Disc corollas yellow. Cypselae 4–6 mm; pappus scales subequal, 1–2 mm. 2n = 38.
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 396, 397 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
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eFloras

Comprehensive Description

provided by North American Flora
Hulsea mexicana Rydberg, sp. nov
A leafy annual or biennial; stem 5-6 dm. high, viscid-villous, branched above, with nearly erect branches; leaves lanceolate, 1 -ribbed, 4-7 cm. long, salicntly dentate, green; viscid-pubescent, sessile; heads few; peduncles 3-8 cm. long; involucre hemispheric, about 8 mm. high and 15 mm. broad; bracts in 3 series, viscid-villous, linear, acuminate; ligules yellow, 7-8 mm. long; tube of disk-corollas 2 mm. long, puberulent; throat 4 mm. long, glandular-puberulent; achenes 5 mm. long, silky-villous; pappus-squamellae oblong, acute, 1.5 mm. long.
Type collected "at La GruUa, San Pedro Martir Mountains, Lower California, Goldman 1256 (U. S. Nat. Herb.).
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bibliographic citation
Per Axel Rydberg. 1914. (CARDUALES); CARDUACEAE; HELENIEAE. North American flora. vol 34(1). New York Botanical Garden, New York, NY
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North American Flora

Hulsea mexicana

provided by wikipedia EN

Hulsea mexicana, the Mexican alpinegold or Mexican hulsea is a rare North American species of flowering plant in the family Asteraceae.

It has been found only in a small region straddling the border between Mexico and the United States. It grows in northern Baja California and in southern California (Imperial County and San Diego County). It grows in chaparral, yellow pine forests, and open habitats between 3,000–9,000 feet (910–2,740 m) in elevation.[1][2] The first botanical specimens collected were from the Mexican side of the border.[3]

Description

Hulsea mexicana is an annuals or biennial herb sometimes reaching 100 cm (39 in) in height. Most of the leaves are on the stem rather than clustered around the base. One plant will generally produce 3–5 flower heads, each with 20–35 ray flowers surrounding a large number of tiny disc flowers.[4]

References

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Hulsea mexicana: Brief Summary

provided by wikipedia EN

Hulsea mexicana, the Mexican alpinegold or Mexican hulsea is a rare North American species of flowering plant in the family Asteraceae.

It has been found only in a small region straddling the border between Mexico and the United States. It grows in northern Baja California and in southern California (Imperial County and San Diego County). It grows in chaparral, yellow pine forests, and open habitats between 3,000–9,000 feet (910–2,740 m) in elevation. The first botanical specimens collected were from the Mexican side of the border.

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