Jepson eFlora: Key page
Vascular Plants of California
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Key to Baccharis

View taxon page for Baccharis

(For a list of species in Baccharis, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Stem generally short-hairy, at least distally among heads

2. Leaves regularly minutely  with closely spaced sharp teeth or oblanceolate, (3)5–13 mm wide ..... B. plummerae subsp. plummerae

2' Leaves  or weakly toothed,  to linear-(ob)lanceolate, 1–4(8) mm wide

3. Proximal leaves present at flower, blades (15)20–45(68) mm, 1–4(8) mm wide, linear to linear-oblanceolate, resin-gland-dotted adaxially; distal leaves generally well developed ..... B. malibuensis

3' Proximal leaves deciduous and 0 at flower, blades 5–17 mm, 1–2 mm wide, lance-linear, not resin-gland-dotted or sticky; distal leaves reduced, bract-like ..... B. brachyphylla

1' Stem generally glabrous throughout

4. Plant broom-like, stems dense, with numerous parallel branches; leaves sparse or 0 at flower; heads single at branch tips or ±  on lateral branches, these in raceme- or panicle-like clusters

5. Leaves 5–15 mm wide, widely oblanceolate to obovate; heads ± sessile on lateral branches in crowded panicle-like clusters; staminate corolla 2–3.5 mm ..... B. sergiloides

5' Leaves 1–3 mm wide, thread-like to narrowly oblanceolate; heads single, stalked, or in small groups in raceme- or panicle-like clusters; staminate corolla > 3.5 mm

6. Stem striate, sharply angled;  of pistillate  ± phyllaries  to , tips  to rounded, glabrous; gravelly or sandy disturbed areas ..... B. sarothroides

6' Stem smooth, rounded; involucre of pistillate head ± ; phyllaries lanceolate, narrowly , usually glandular-scurfy; dense chaparral ..... B. vanessae

4' Plant bushy or sparingly branched, not broom-like; leaves present at flower; heads in flat-topped or panicle-like clusters (or smaller, lateral clusters in spring-flowering plants).

7. Leaf blades obovate or oblanceolate ..... B. pilularis

8. Stems generally , brittle, forming erect or rounded shrub; leaves generally 15–40 mm ..... subsp. consanguinea

8' Stems , flexible, forming mat; leaves generally 5–15 mm; exposed sandy beaches and sea bluffs ..... subsp. pilularis

7' Leaf blades linear, lanceolate, , oblong to narrowly oblanceolate

9. Leaf blades 1–2(5) mm wide, linear to narrowly oblanceolate, margin entire to minutely dentate with closely spaced sharp teeth; faces not sticky ..... B. plummerae subsp. glabrata

9' Leaf blades 3–30 mm wide, lanceolate, lance-elliptic or oblong to narrowly oblanceolate, faces generally sticky

10. Leaf blades linear-oblong to narrowly oblanceolate, entire or distally coarsely and irregularly toothed; fruit 8–10-ribbed, pappus 8–12 mm ..... B. salicina

10' Leaf blades lanceolate or lance-elliptic, entire or finely  distally or throughout; fruit 5-ribbed, pappus 2.5–6(7) mm

11. Rhizomatous  herb, forming large colonies; heads in dense, compact, terminal rounded to ± flat-topped clusters; fruit minutely hairy ..... B. glutinosa

11' Shrub, not rhizomatous, not forming colonies; heads in terminal flat-topped or pyramidal panicle-like clusters in summer–fall-flowering pls, in smaller lateral clusters in spring-flowering plants; fruit glabrous ..... B. salicifolia subsp. salicifolia

 

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Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, http://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 .

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