|
|
Key to AgoserisView taxon page for Agoseris
(For a list of species in Agoseris, use the above link.) Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots. 1. Annual from slender taproot; stem often leafy above base; involucre  Group of bracts more or less held together as a unit, subtending a flower, fruit (acorn cup), or inflorescence. 10–25 mm in fruit; outer fruits sometimes wavy-ribbed (or inflated and ribless) ..... A. heterophylla 2. Ligule 10–15 mm, much exceeding involucre; anthers 2–4 mm; leaf  Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets). lobes  1. A major expansion or bulge, such as on the margin of a leaf, sepal, or petal, or on the surface of an ovary. 2. The free tips of otherwise fused structures, such as sepals or petals; larger than teeth. generally 3–5 pairs ..... var. cryptopleura 1' Perennial herb from stout taproot, generally with caudex  Generally short, sometimes woody, more or less vertical stem of a perennial, at or beneath ground level. ; stem generally not or obscurely leafy above base; involucre 10–60 mm in fruit; outer fruits generally straight-ribbed 3. Corolla orange, pink, or ± red, generally drying ± purple 3' Corolla yellow, outer generally ± purple abaxially, drying ± white but purple still evident 5. Fruit beak stout, << body; inner phyllaries generally not elongating in fruit 6. Peduncle generally 5–20 cm, ± glandular-hairy, base generally ± glandular-woolly; leaf blade  Expanded portion of a leaf, petal, or other structure, generally flat but sometimes rolled, cylindric, wavy, or cupped. generally 2–10 cm, generally toothed or lobed (entire), lobes generally 2(+) pairs, ± divergent, proximal lobes angled towards leaf base, distal angled towards leaf tip or spreading  Oriented more or less perpendicularly to the axis of attachment; often, more or less horizontal. ; plant generally decumbent  lying mostly flat on the ground but with tips curving up. or prostrate  Lying flat on the ground. ..... A. monticola 6' Peduncle generally 20–60 cm, ± glabrous or sparsely to densely hairy, hairs glandular or not; leaf blade generally 3–30 cm, entire  Having margins that are continuous and smooth (i.e., without teeth, lobes, etc.). , toothed, or lobed, lobes (if present) generally > 2 pairs, spreading or all angled in same direction; plant erect  Upright; vertically oriented. to spreading or petioles  Leaf stalk, connecting leaf blade to stem; sometimes more or less indistinct. decumbent 7. Leaves glabrous and glaucous to densely hairy, entire or few-toothed or -lobed; peduncle  Stalk of an individual flower borne singly, not in an inflorescence, or of an entire inflorescence, or the corresponding structure in fruit; the stalk subtending an involucre (e.g., in Asteraceae, Polygonaceae). generally hairy or ± glabrous in age except distally; phyllaries in 3–4 series, outer generally rosy-purple except margin, generally ± glandular-hairy ..... A. ×dasycarpa 7' Leaves ± glabrous, ± glaucous, generally ± entire or weakly few-toothed; peduncle generally glabrous, occasionally sparsely hairy distally; phyllaries in 2–3 series, outer green or ± rosy-purple, generally purple-spotted, generally ± glabrous proximally (weakly ciliate), hairs glandless ..... A. glauca var. glauca 5' Fruit beak ± slender, (< 1)1–4 × body; inner phyllaries ± elongating with fruit 8. Fruit beak 10–25 mm, (< 3)3–4 × body; leaves generally pinnately lobed or toothed (entire) 9. Ligule 6–15 mm, tube 10–20 mm; anthers 2–5 mm; pappus generally 15–20 mm, bristles in 4–6 series; leaf lobes generally angled toward leaf base; fruit body tip ± truncate  Abruptly (not gradually) narrower or smaller at base or tip, as if cut straight across or nearly so. , not tapered  Gradually (not abruptly) narrower or smaller at base or tip. to beak ..... A. retrorsa 9' Ligule 3–7 mm, tube 4–7 mm; anthers 1–3 mm; pappus 7–15 mm, bristles in 2–3 series; leaf lobes generally angled toward leaf tip or spreading; fruit body tip ± abruptly tapered to beak ..... A. grandiflora 10. Plant ± robust; leaves (± entire) toothed to pinnately lobed, generally >= 10 mm wide except lobes; leaf lobes ± lanceolate  Narrowly elongate, widest in the basal half, often tapered to an acute tip. to oblanceolate; flowers generally 150–500; phyllaries green or generally rosy-purple, rarely purple-spotted, outer often exceeding inner at flower ..... var. grandiflora 10' Plant ± slender; leaves pinnately lobed (toothed), generally 2–4 mm wide except lobes; leaf lobes thread-like to lance-linear; flowers generally < 100; phyllaries generally rosy-purple and often purple-spotted, outer ± = or sometimes exceeding inner at flower ..... var. leptophylla 8' Fruit beak <= 10 mm, (< 1)1–3 × body; leaves entire to pinnately lobed 11. Fruit body 5–10 mm; corolla tube 6–15 mm, rarely shorter; pappus 9–20 mm 12. Leaf lobes generally angled toward leaf base or spreading; ligule  1. In Asteraceae, the 5-lobed, strap- or fan-shaped outer portion of the corolla of a ligulate flower. 2. In most Poaceae and some other grass-like plants, an appendage at the adaxial junction of leaf sheath and blade, generally membranous, sometimes formed of hairs. 3. In Isoetes and, more obscurely, in Selaginella, a membrane that wholly or partially covers a sporangium. 10–20 mm, exceeding involucre; fruit beak (< 1)1–2 × body ..... A. parviflora 12' Leaf lobes generally angled toward leaf tip or spreading; ligule 5–10(+) mm, generally ± equaling (exceeding) involucre; fruit beak generally = body 11' Fruit body 3–5 mm; corolla tube 2–6 mm; pappus 4–10 mm 14. Leaves generally pinnately lobed (toothed); leaf lobes generally 5–7(+) pairs, 2° lobe  1. A major expansion or bulge, such as on the margin of a leaf, sepal, or petal, or on the surface of an ovary. 2. The free tips of otherwise fused structures, such as sepals or petals; larger than teeth. occasionally 1; plant generally erect, leaves all basal  At or near the base of a plant or plant part. Especially said of leaves clustered near the ground or of a placenta confined to the base of an ovary. ; ± inland in ± fine-textured soils – NCoR, ScV, CW ..... A. hirsuta 14' Leaves entire to pinnately lobed; leaf lobes if present generally 3–5(+) pairs, thread-like to ± spoon-shaped, 2° lobe generally 0; plant generally decumbent to ± erect, leafy stem present and ± buried by drifting sand, or leafy stem 0; coastal dunes and sand hills ..... A. apargioides 15. Ligule 3–6 mm, not or scarcely exceeding phyllaries; anthers 1.5–2.5 mm; head  1. A dense, often spheric inflorescence of sessile or subsessile flowers. 2. In Asteraceae and some other groups, a head-like inflorescence is one in which sessile or subsessile inflorescence units (e.g., heads in Asteraceae, umbels enclosed by involucres in Eriogonum), instead of individual flowers, are attached in a short dense cluster without an evident axis or branches. glabrous or hairs generally white-opaque, glandless – n NCo (Humboldt Bay n) ..... var. maritima 15' Ligule 8–16 mm, exceeding phyllaries; anthers 3.5–4.5 mm; head glabrous or hairs generally white- or yellow-translucent, glandular 16. Plant generally glabrous to ± densely hairy, hairs ± white; leaf blade generally 1–15 mm wide except lobes, linear  Elongate, with nearly parallel sides; narrower than elliptic or oblong. to oblanceolate, lobes if present thread-like to ± lanceolate (spoon-shaped) – CCo (San Francisco s to Cambria) ..... var. apargioides 16' Plant generally densely hairy, hairs ± yellow; leaf blade generally 15–30 mm wide except lobes, blade and lobes oblanceolate to ± spoon-shaped – c&s NCo, n CCo (Point Reyes n to Mendocino) ..... var. eastwoodiae
Please use this Google Form for Contact/Feedback
Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, https://ucjeps.berkeley.edu/eflora/ [accessed on ]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on .
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.
|
|
|