Agoseris heterophylla
Agoseris apargioides
annual agoseris, annual false dandelion, mountain dandelion
coast dandelion, seaside agoseris, seaside false-dandelion, woolly goat chicory
0 or 1 (erect, 0–5 cm).
0 or 1–5+ (becoming buried by drifting sand and appearing pseudorhizomatous).
mostly erect, sometimes prostrate;
petioles not purplish, margins glabrous or ciliate;
blades usually oblanceolate to spatulate, rarely linear, 1–25 cm, margins entire or lobed;
lobes 2–3 pairs, linear to spatulate, spreading to antrorse, lobules mostly 0, glabrous or densely hairy.
usually reclining to decumbent, sometimes erect;
blades mostly oblanceolate to spatulate, sometimes nearly linear, 3–15 cm, margins usually dentate to lobed or pinnatifid, rarely entire, lobes 3–5(–7) pairs, filiform to spatulate, spreading to antrorse, lobules mostly 0, faces glabrous or densely hairy.
elongating after flowering, 3–60 cm in fruit, glabrous or glabrate, or basally puberulent and apically hairy to tomentose, sometimes stipitate-glandular.
± elongating after flowering, 7–45 cm in fruit, glabrous or glabrate to hairy, often villous basally, sometimes villous to tomentose apically, sometimes stipitate-glandular.
cylindric to hemispheric, 1–2 cm in fruit.
obconic to hemispheric, 1.5–2.5 cm in fruit.
epaleate.
epaleate.
5–100(–300);
corollas yellow, tubes 1–5 mm, ligules 2–15 × 1–3 mm;
anthers 1–4 mm.
25–200;
corollas yellow, tubes 2–5.5 mm, ligules 3–16 × 1–3 mm;
anthers 1.5–4.5 mm.
in 2–3 series, green or medially rosy purple, sometimes purple-black spotted or tipped, subequal to unequal, margins glabrous or ciliate, faces usually puberulent to villous, mostly stipitate-glandular, sometimes glabrous;
outer erect or spreading, adaxially usually villous to lanate, sometimes glabrous;
inner erect, ± elongating after flowering.
imbricate (sometimes subequal) in 2–3 series, green or medially rosy purple, often spotted and/or with purple-black midstripes, margins ciliate to tomentose, faces usually ± villous, sometimes glabrous, sometimes stipitate-glandular;
outer mostly spreading, adaxially usually ± tomentose, rarely glabrous;
inner erect, elongating after flowering.
7–16 mm, bodies mostly fusiform to obconic, sometimes tumid, 2–5(–10) mm, beaks 5–11 mm, lengths 1–4 times bodies, ribs 0 or alate, straight to strongly undulate, uniform or diminishing proximally;
pappus bristles in 2–3 series, 4–9 mm.
5–12 mm;
bodies fusiform to obconic, 3–5 mm, beaks (1–)3–8 mm, lengths mostly 1–2 times bodies;
pappus bristles in 2–3 series, 4–9 mm.
= 36.
Agoseris heterophylla
Agoseris apargioides
Varieties 3 (3 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Varieties 3 (3 in the flora).
A misinterpretation of the type description of Agoseris apargioides resulted in its confusion with A. hirsuta during the latter half of the twentieth century; the two species are not conspecific. Agoseris apargioides (in the strict sense) here includes what most authors of recent floras have called A. apargioides subsp. maritima and/or var. eastwoodiae. It occurs on coastal dunes along the Pacific coast from central California to Washington. A unique feature of A. apargioides is that its stems become progressively buried by drifting sand, leaving a terminal rosette of leaves exposed, the plants thus appearing pseudorhizomatous.
Agoseris apargioides is part of a close alliance that includes A. heterophylla, A. hirsuta, and A. coronopifolia from South America. Exact relationships within this group are not clear. Putative hybrids between A. apargioides and A. heterophylla var. cryptopleura, A. hirsuta, and A. grandiflora var. grandiflora have been identified.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Ligules 10–15 mm, much surpassing phyllaries; anthers 2–4 mm; leaf blades toothed to lobed, lobes mostly 3–4(–5) pairs | var. cryptopleura |
1. Ligules 2–4 mm, subequaling phyllaries; anthers 1–1.5 mm; leaf margins entire, toothed, or lobed, lobes mostly 2–3 pairs | → 2 |
2. Peduncle lengths 0.5–3 times leaves at flowering; leaf blades glabrous abaxially, pubescent adaxially; peduncles mostly glabrate, or apically tomentose | var. quentinii |
2. Peduncle lengths mostly 1.5–4.5 times leaves at flowering; leaf blades uniformly glabrous or hairy; peduncles ± glabrate, or apically hairy to villous, sometimes glabrous | var. heterophylla |
1. Ligules 3–6 mm; anthers 1.5–2.5 mm; phyllaries glabrous or villous, eglandular | var. maritima |
1. Ligules 8–16 mm; anthers 3.5–4.5 mm; phyllaries glabrous or tomentose, ± stipitate-glandular | → 2 |
2. Plants often densely villous; leaf blades mostly oblanceolate to spatulate, margins dentate to lobed, lobes oblanceolate to spatulate; phyl- laries densely villous to tomentose | var. eastwoodiae |
2. Plants mostly glabrous or sparsely villous; leaf blades usually oblanceolate, sometimes linear, rarely spatulate, margins entire or laciniately pinnatifid, lobes filiform to lanceolate; phyl- laries glabrous or villous | var. apargioides |
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