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Published In: Species Plantarum 2: 863–864. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 5/7/2022)
Acceptance : Accepted
Project Data     (Last Modified On 12/27/2021)
Contributor Text: Roohi Abid, M. Qaiser & Rubina Abid
Contributor Institution:

Centre for Plant Conservation, University of Karachi – Pakistan

and

Department of Botany, ‎University of Karachi, Karachi

Synonym Text:

Erigeron alpinus Lam., non L. 1753; Trimorpha vulgaris Cass. Dict. Sci. Nat. 37: 462. 1825; Erigeron corymbosus Wallr. Erst. Beitr. Fl. Heruyn. 272. 1840; Erigeron orientalis Boiss., Diag. Ser. 2(3) : 7. 1856; Erigeron alpinus sensu Hook. f., Fl. Bri. Ind. 3:255. 1881 non L. 1753; Erigeron yellowstonensis A. Nelson Bot. Gaz. 30. 198. 1900.

Distribution:

Throughout Europe, Caucasia, South–West and C. Asia.

Comment/Acknowledgements:

A highly variable species, often divided into number of infraspecific taxa. In our area 6 subspecies are recognized.


 

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Tap rooted or rhizomatous biennial or perennial herbs. Stem 5 – 45 (–50) cm tall, erect – suberect, solitary or much branched, mostly above and from the middle, sparsely – moderately hirsute or hispid–strigillose, hairs appressed, sometime mixed with glandular hairs, usually more dense below capitulum. Leaves glabrescent or hirsute – strigillose – villose on either side, basal leaves usually present, withering at anthesis, oblanceolate or spathulate – oblong, 2 – 10 (–13) cm long (including petiole), 0.5 – 1.5 (–2) cm wide, obtuse – acute, mostly entire, rarely remotely serrate (or with tiny, acute teeth); cauline leaves lanceolate – oblanceolate or elliptic, oblong, 0.8 – 7.5 (–9) cm long, 0.5 – 1 cm wide, obtuse – acute, entire, sessile – subclasping, uppermost similar to cauline leaves but smaller in size. Capitula usually numerous, 1 – 1.5 (–2) cm across, in dense or laxly broad – narrow corymbiform or racemose – paniculate synflorescence. Involucre hemispheric, 1–1.5 cm in diameter, green – darkened or blackened. Phyllaries 2 – 3–seriate, linear – lanceolate, acute – acuminate, hirsute – villous, intermixed with glandular hairs, outer and middle ones 3 – 5 (– 6) mm long, 1– 1.5 mm wide, inner ones 7 – 8 mm long, 0.5 – 1 mm wide. Female eligulate florets 2.5 – 3 mm long. Ray florets 50 – 100 (– 120), purplish – rosy or white, 3 – 5 (–7) mm long, corolla tube 1.5 – 2.5 (–3) mm long. Disc florets yellow, 4.5 – 5 mm long, tube 1.5 – 2 mm long, limb 2.5 – 3 mm long including up to 0.5 mm long lobes. Cypselas oblanceolate – obovoid, 2 – 2.5 (–3) mm long, 0.3 – 0.5 (–1.2) mm wide, straw colored – brown, somewhat compressed, sericeous. Outer bristles of pappus ca 0.5 mm long, inner ones 4 – 5 (–6) mm long, dirty white – pale, rosy brown or straw yellow coloured.  

 

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1.

+

Ascending-arcuate, small herb, up to 15 cm long, furcately branched, sparsely leafy. Leaves usually 2-5, basal leaves mostly spathulate.

iv. E. acris ssp. staintonii

Erect-suberect, tall herb up to 50 cm high, not furcately branched (sub corymbosely - subracemosely branched). Leaves more than 5, basal leaves lanceolate or linear-oblancelate.

2

2.

+

Involucre blackish or blackish green - dark purple. Pappus rosy-brown or straw-yellow.

3

Involucre mostly green, rarely dark green. Pappus pale.

4

3.

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Leaves lanceolate, somewhat appressed to the stem. Pappus rosy-brown.

iii. E. acris ssp. phaeocephalus

Leaves linear–oblanceolate, not appressed to the stem. Pappus straw-yellow, becoming brownish.

v. E. acris ssp. lalehzaricus

4.

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Synflorescence subracemose. Involucre pale green. Leaves entire. Ligule ca 3 mm long.

vi. E. acris ssp. asadbarensis

Synflorescence subcorymbose or corymbose-racemose or paniculiform. Involucre green. Leaves entire - remotely serrulate. Ligule 4-5 (-6) mm long.

5

5.

+

Plants biennial - perennial, erect or curved. Involucre glandular. Basal leaves lanceolate. Ray florets up to 4 mm long.

ii. E. acris ssp. pycnotrichous

Plants perennial, erect, never curved. Involucre eglandular. Basal leaves spathulate - oblong. Ray florets up to 7 mm long

i. E. acris ssp. acris

 
 
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