WildBristol.uk - Discovering Wildlife in Bristol

Sanvitalia procumbens

Stace 4:

Guizotia abyssinica (L. f.) Cass. - Niger.

Sparsely hairy; stems erect, to 1(2)m; leaves lanceolate to narrowly ovate, clasping stem at base; capitula 2-4cm across including ligules 1-2cm; (2n=30). Neophyte-casual; grown in warm countries as oilseed, casual on tips and waste ground near oil-mills and as bird-seed alien; scattered in Britain North to Moray; Isle of Man, Channel Islands, South & Central Ireland; East Africa. Often not flowering before killed by frosts.

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NBN

Possibly Guizotia schimperi or Guizotia villosa

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PLADIAS

JSTOR (G. schimperi)

An erect annual, 2–3 ft. high, pubescent above. Leaves elliptic-ovate, subacute, denticulate, cordate-amplexicaul, sessile, 1/2–4 by 1/8–1 1/2 in. Capitula hemispherical, 1/2 in. diameter, in a divaricate cyme; pedicels ranging up to 1 1/4 in. Outer involucral bracts ovate or ovate-lanceolate, not exceeding the florets. Paleæ of the receptacle loosely pilose towards the tip. Corolla-tube of the disk-florets subglabrous or somewhat hairy at base. Achenes glabrous, 1/12– 1/10 in. long.

JSTOR (G. villosa)

An erect villous annual, 9–15 in. high, with spreading branches. Stem and branches with spreading hairs. Leaves from elliptical to lanceolate, narrowed at both ends, more or less serrate, sessile, subamplexicaul, 1/2–3 by 1/8–1 1/2 in. Capitula hemispherical, 1/4– 3/8 in. diameter, pedicellate, in an open corymbose or somewhat elongated leafy cyme; pedicels slender, ranging up to 2 in. Outer involucral bracts lanceolate, obtuse, exceeding the inner ones. Corolla-tube of disk-florets hairy below. Achenes glabrous, 1/15 in. long.

JSTOR (G. abyssinica)

Receptacular paleae 5–7+ mm. Ray corolla laminae 8–14+ mm. Disc corollas 4–5 mm. Cypselae 4–5 mm. 2n = 30 (from India). Phenology jun-aug (summer), sep-nov (fall)

Elimination

• Guizotia abyssinica (L.f.) Cass. - (probably not) - capitula 2-4cm across (ligules 1-2cm)
• Guizotia arborescens Friis x (no) - leaves petiolate and way too big
• Guizotia jacksonii (S.Moore) J.Baagøe x (no) - leaves are oblanceolate
• Guizotia scabra (Vis.) Chiov. - (probably not) - same as G. abyssinica but with sticky densely glandular-hairy stems and leaves
• Guizotia schimperi Sch.Bip. / (yes)
• Guizotia villosa Sch.Bip. ex A.Rich.
• Guizotia zavattarii Lanza x (no) - leaves petiolate, denticulate and too big