Checklist of Bolivian Compositae - Royal Botanic Gardens, Kew

limits of C. bonariensis and C. floribunda, the former author placing the former species within his concept of C.
bonariensis.
Key to species (originally modified from Cabrera, 1978, and Cuatrecasas, 1969)
1. Perennial herbs (or rarely biennials); lower leaves rosulate, sometimes loosely so, and
cauline leaves reduced; capitula few in terminal corymbiform cymes 2
Annual herbs; cauline leaves numerous and similar to basal; capitula numerous 4
2. Low-growing herbs, 8–30 (–50) cm tall; basal leaves oblanceolate, entire; involucre 6–8 mm
diam.
C. deserticola
Robust herbs, 30–100 cm tall; basal leaves oblanceolate-spathulate, margins crenate or
pinnatifid; involucre 7–12 mm diam. 3
3. (2) Margins of basal leaves crennate, rarely entire; basal leaves considerably larger than upper
leaves; flowering stems simple and useually leafless beneath inflorescence; capitula 6–8 10–
12 mm (c. 15–18 mm when pressed) C. primulifolia
Margins of basal leaves pinnatifid; basal leaves barely larger than upper leaves; flowering
stem usually branched and leafy to apex; capitula 7 7 mm (c. 7–10 mm when pressed)
C. coronopifolia
4. (2) Flexuous or erect herbs; leaves oblong-ovate or spathulate; stems simple or few-branched;
inflorescence paniculate
C. laevigata (= apurensis)
Erect robust herbs; leaves lanceolate or linear; branches ascending; inflorescences thyrsoid,
many-headed 5
5. (4) Capitula 3–5 mm tall 7– 8 mm diam. (when pressed); female florets 40–50; achenes
glabrous
C. canadensis
Capitula 5–7 mm tall 10–15 mm diam. (when pressed); female florets 60–120; achenes
moderately setuliferous 6
6. (5) Lateral branches of inflorescence often overtopping main axis; phyllaries whitish inside;
capitula c. 10 mm diam. when pressed; pappus white or pinkish
C. bonariensis
Lateral branches of inflorescence not overtopping main axis; phyllaries chestnut brown
inside; capitula < 10 mm diam when pressed; pappus straw-coloured C. floribunda
Note: C. lignescens is probably conspecific with larger plants of C. deserticola. Conyza suffruticosa will need to
be added if present in Bolivia!
Conyza albida Willd. ex Spreng., Syst. Veg., ed. 16, 3: 514 (1826) = Conyza bonariensis (L.) Cronquist
Conyza alopecuroides Lam., Encycl. 2: 93 (1786) = Pterocaulon alopecuroides (Lam.) DC.
*Conyza andicola Phil., Anales Mus. Nac. Chile, Secc. 2, Bot. 8: 38 (1891) = Laennecia artemisiifolia (Meyen &
Walp.) G. L. Nesom
Conyza apurensis Kunth in Humb., Bonpl. & Kunth, Nov. Gen. Sp. 4 (ed. folio): 57 (1818) = Conyza laevigata
(Rich.) Pruski
*Conyza artemisiifolia (as artemisioides) Meyen & Walp., Nov. Actorum. Acad. Caes. Leop.-Carol. Nat. Cur. 19,
Suppl. 1: 262 (1843) [non C. artemisioides Sch.Bip. ex Baker in Mart., Fl. Bras. 6(3): 63 (1882) = Baccharis
linearifolia (Lam.) Pers. s.l., sensu Müller, 2006] = Laennecia artemisiifolia (Meyen & Walp.) G. L. Nesom
Conyza articulata Lam., Encycl. 2: 94 (1786) = Baccharis articulata (Lam.) Pers.
Conyza aurita L.f., Suppl. Pl. : 367 (1781) = Pseudoconyza viscosa (Mill.) D‘Arcy
Conyza berteroana Phil., Linnaea 28: 737 (1836) = Symphyotrichum squamatum (Spreng.) G. L. Nesom
Conyza bilbaoana Remy in Gay, Fl. Chilena 4: 75 (1849) = Conyza floribunda Kunth
Conyza bonariensis (L.) Cronquist, Bull. Torrey Bot. Club 70: 632 (1943).
*Erigeron bonariensis L., Sp. Pl. : 863 (1753). Type: ‗Habitat in America australi 0.‘ Lectotype (selected by
D‘Arcy, 1975:1021): Herb. Linn. No. 994.11 (LINN).
Erigeron linifolium Willd., Sp. Pl., ed. 4, 3(3): 1955 (1804). Types: ‗Habitat -- -- -- -- -- 0 (v. v.)‘ Holotype: B-W
(15685). Note: there are six sheets of this number in B-W, the sixth is marked ‗(Balbis ... Erigeron n. 20)‘ at
the bottom of the sheet.
Conyza hispida Kunth in Humb., Bonpl. & Kunth, Nov. Gen. Sp. Pl. 4 (ed. folio): 55 (1818). Type: ‗Crescit et
floret cum præcedente. K‘ [‗Crescit in alta planitie Mexicana ad litus lacus Tezcucensis, alt. 1170 hex. KFloret
Majo.‘] – [Humboldt & Bonpland 4154]. Holotype: P-Bonpl.; isotype: B-W [‗4154 Mexique‘].
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