Comments
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eFloras tarafından sağlandı
Layia glandulosa occurs in deserts of western North America, extending to the Pacific coast in central and southern California. As treated here (provisionally) and previously, L. glandulosa corresponds to a paraphyletic group; molecular phylogenetic data have indicated that L. discoidea is most closely related to a subset of lineages in L. glandulosa, including yellow-rayed populations previously recognized as subsp. lutea or var. lutea (B. G. Baldwin, unpubl.). Report of L. glandulosa from British Columbia has not been confirmed.
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Description
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Plants 3–60 cm (self-incompat-ible); glandular, often not strongly scented, sometimes spice-scented. Stems not purple-streaked (often uniformly dark purple). Leaf blades obovate to linear, 6–100 mm, margins (basal leaves) toothed to lobed. Involucres ± campanulate to hemispheric, 4–11 × 3–11+ mm. Phyllaries 3–14, apices often shorter (sometimes longer) than folded bases. Paleae in 1 series between ray and disc florets. Ray florets 3–14; laminae often white, sometimes yellow or pale yellow, 3–22 mm. Disc florets 17–100+; corollas 3.5–6.5 mm; anthers yellow to brownish. Ray cypselae glabrous. Disc pappi of 10–15 usually white (rarely tawny), linear-attenuate to subulate, ± equal scales 2–5 mm, each proximally plumose and often adaxially woolly. 2n = 16.
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Synonym
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Blepharipappus glandulosa Hooker, Fl. Bor.-Amer. 1: 316. 1833; Layia glandulosa subsp. lutea D. D. Keck; L. glandulosa var. lutea (D. D. Keck) Hoover
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Layia glandulosa
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Layia glandulosa is a species of flowering plant in the family Asteraceae known by the common names whitedaisy tidytips and white layia. It is native to western North America south from central Washington (state) to Baja California and east to Utah and Arizona, where it is common in a number of habitat types.[1][2][3]
Description
This is an annual herb producing an erect stem to a maximum height just over one-half meter (1 ft 8 in). The stem and foliage are dotted with dark glandular hairs and the plant is sometimes scented. The thin leaves are linear to oval-shaped, with the lower ones often lobed, approaching 10 centimeters (4 in) in maximum length.[3][2]
The flower head has a base of green, hairy, glandular phyllaries. The face is fringed with 3–14 (typically 5) broad, 3-lobed ray florets which are usually white, but sometimes yellow. The center contains yellow disc florets with yellow anthers. The fruit is a hairy achene; fruits on disc florets have a pappus of stiff white hairs.[3][2]
The species is similar to Blepharipappus scaber, which has white disc flowers.[4]
References
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Layia glandulosa: Brief Summary
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Full-face flower and bud
Flowers and seedhead
Layia glandulosa is a species of flowering plant in the family Asteraceae known by the common names whitedaisy tidytips and white layia. It is native to western North America south from central Washington (state) to Baja California and east to Utah and Arizona, where it is common in a number of habitat types.
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Layia glandulosa
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wikipedia VI tarafından sağlandı
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Layia glandulosa: Brief Summary
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Vietnamca
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wikipedia VI tarafından sağlandı
Layia glandulosa là một loài thực vật có hoa trong họ Cúc. Loài này được (Hook.) Hook. & Arn. mô tả khoa học đầu tiên năm 1838.
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Full-face flower and bud 
Flowers and seedhead 
