A Brief on Chamomile - Appendix IIA

One of the Keys to Identify the Plants of Tanacetum
Tanacetum species can be classified according to their leaves:

  • balsamic (T. balsamita),
  • mattram (T. parthenium),
  • common tansy (T. corymbosum) and
  • coarsely bipinnate (T. macrophyllum).

Examples:
Tanacetum balsamita (艾菊) 2n = 18, 54
Common name: Costmary

Perennials, 30–80(–120) cm. Stems 1, erect, simple or branched (strigose, glabrate). Leaves basal and cauline; petiolate (proximal) or sessile (distal); blades (basal and proximal cauline) mostly elliptic to oblong, 10–20 × 2–8 cm, usually not pinnately lobed (sometimes with 1–4+ lateral lobes near bases), margins ± crenate, faces usually silvery strigose or sericeous (at least when young), glabrescent, ± gland-dotted. Heads (3–)10–60+ in corymbiform arrays. Involucres (3–)5–8(–10) mm diam. (phyllaries 40–60+ in 3–4+ series, tips usually ± dilated). Receptacles flat to convex. Ray florets usually 0 [sometimes 12–15, pistillate, fertile; corollas white, laminae 4–6+ mm]. Disc corollas ca. 2 mm. Cypselae ± columnar, 1.5–2 mm, 5–8-ribbed (with non-mucilaginous glands); pappi coroniform, 0.1–0.4 mm (entire or ± toothed). 2n = 18, 54.

Tanacetum parthenium (短舌匹菊) 2n = 18
Common name: Feverfew (Swedish: Mattram)

Pyrethrum parthenium
https://www.inaturalist.org/observations/52888276

Tanacetum parthenium
https://www.inaturalist.org/observations/94985419


Tanacetum corymbosum(also 艾菊?)
Geographic distribution: Africa, Europe
(Pls refer to: http://www.plantsoftheworldonline.org/taxon/urn:lsid:ipni.org:names:252281-1)

Common name: Scentless feverfew

https://www.inaturalist.org/observations/91727128

Posted by lunababy22 lunababy22, September 28, 2021 08:17

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