Flora of North America species comparison

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Erechtites minimus

Australian bornweed, coastal burnweed, tooth coast burnweed
Habit Annuals or perennials, (50–)100–200 cm (sparsely and unevenly tomentose, glabrescent).
Taproots

with branching lateral roots.
Stems

1, erect.
Leaves

evenly distributed (proximal often withering before flowering); indistinctly petiolate (bases often weakly clasping);

blades lanceolate to narrowly lanceolate, (3–)7–20 × 1–4 cm, margins sharply and evenly toothed (not lobed or pinnatifid).
Involucres

cylindric or turbinate, 4–7 mm.
Receptacles

3–5 mm diam.
Phyllaries

usually 8.
Heads

(40–)80–200 in open, corymbiform arrays (or arrays of clusters).
Cypselae

1.5–2 mm, usually puberulent in lines along relatively narrow ribs, sometimes glabrous.
2n

= 60.

Erechtites minimus
Phenology Flowering summer–early fall.
Habitat Disturbed, coastal sites
Elevation 0–200 m (0–700 ft)
Distribution
from FNA
CA; OR; WA; Pacific Islands (New Zealand); Australia [Introduced in North America]
[WildflowerSearch map]
Discussion

The type of Erechtites prenanthoides (A. Richard) de Candolle (a name sometimes misapplied to plants of E. minimus) is conspecific with the type of E. quaridentata (Labillardière) de Candolle.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 604.
Parent taxa Asteraceae > tribe Senecioneae > Erechtites
Sibling taxa
E. glomeratus, E. hieraciifolius
Synonyms Senecio minimus
Name authority (Poiret) de Candolle: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 6: 437. (1838)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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