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Layia glandulosa (Hook. ) Hook. & Arn.
WHITEDAISY TIDYTIPS
Life   Plantae   Dicotyledoneae   Asteraceae   Layia


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Associates · map
FamilyScientific name @ source (records)
Apidae  Bombus melanopygus @ UCRC_ENT (1); EMEC (6)
Halictidae  Conanthalictus bakeri @ UCRC_ENT (2)

Dufourea tularensis @ BBSL__TIMB (1)
Megachilidae  Hoplitis sambuci @ UCRC_ENT (1)
Melittidae  Hesperapis nitidula @ UCRC_ENT (1)
Miridae  Hoplomachidea consors @ AMNH_ENT (4)

Lygus hesperus @ UCR_ENT (2)

Macrotylus dorsalis @ AMNH_PBI (20)

Reuteroscopus unknown @ AMNH_PBI (1)
Rhopalidae  Harmostes dorsalis @ UCR_ENT (2)

Harmostes reflexulus @ UCR_ENT (1)
_  unknown unknown @ AMNH_PBI (1)

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FNA Vol. 21 Page 262 , 264, 266, 267 , 268 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 21 | Asteraceae | Layia

9. Layia glandulosa (Hooker) Hooker & Arnott, Bot. Beechey Voy. 358. 1839.

Blepharipappus glandulosa Hooker, Fl. Bor.-Amer. 1: 316. 1833; Layia glandulosa subsp. lutea D. D. Keck; L. glandulosa var. lutea (D. D. Keck) Hoover

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. 2 n = 16.

Flowering Feb—Jul. Openings in scrub, woodlands, forests, grasslands, and meadows, gravelly or sandy soils, sometimes dunes; 0—2700 m; Ariz., Calif., Idaho, N.Mex., Oreg., Utah, Wash.; Mexico (Baja California).

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.

Updated: 2024-05-24 03:35:02 gmt
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