{"id":1410693,"date":"2012-02-14T05:47:44","date_gmt":"2012-02-14T05:47:44","guid":{"rendered":""},"modified":"2024-12-24T18:45:16","modified_gmt":"2024-12-24T13:15:16","slug":"epilobium-angustifolium","status":"publish","type":"ht_kb","link":"https:\/\/efloraofindia.com\/efi\/epilobium-angustifolium\/","title":{"rendered":"Epilobium angustifolium subsp. circumvagum"},"content":{"rendered":"
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Epilobium angustifolium <\/i>subsp. circumvagum<\/i> Mosquin, Brittonia 18: 167 1966<\/i>.\u00a0(syn: Chamaenerion angustifolium<\/i> subsp. circumvagum<\/i> (Mosquin) Moldenke; Chamaenerion angustifolium<\/i> var. platyphyllum<\/i> Daniels;\u00a0Chamaenerion danielsii<\/i> (D. L\u00f6ve) Czer.; Chamerion angustifolium<\/i> var. canescens<\/i> (A. W. Wood) N. H. Holmgren & P. K. Holmgren; Chamerion angustifolium<\/i> subsp. circumvagum<\/i> (Mosquin) P. C. Hoch; Chamerion danielsii<\/i> (D. L\u00f6ve) S.K. Cherepanov; Chamerion platyphyllum<\/i> (Daniels) A. & D. L\u00f6ve; Epilobium angustifolium<\/i> var. abbreviatum<\/i> (Lunell) Munz; Epilobium angustifolium<\/i> var. canescens<\/i> Alph.Wood; Epilobium angustifolium<\/i> var. macrophyllum<\/i> (Hausskn.) Fernald; Epilobium angustifolium<\/i> subsp. macrophyllum<\/i> (Hausskn.) Hult\u00e9n;\u00a0\u00a0Epilobium angustifolium<\/i> var. platyphyllum<\/i> (Daniels) Fernald; Epilobium danielsii<\/i> D. L\u00f6ve; Epilobium platyphyllum<\/i> (Daniels) A. & D. L\u00f6ve);<\/div>\n
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Alaska, USA (Arizona, California, Colorado, Connecticut, District of Columbia, Delaware, Iowa, Idaho, Illinois, Indiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Montana, North Carolina, North Dakota, Nebraska, New Hampshire, New Jersey, New Mexico, Nevada, New York, Ohio, Oregon, Pennsylvania, Rhode Island, South Dakota, Tennessee, Utah, Virginia, Vermont, Washington
\nState, Wisconsin, West Virginia, Wyoming), Canada (Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland, Nova Scotia, Northern Territories, Ontario, Prince Edward Isl., Quebec, Saskatchewan), St. Pierre et Miquelon, China (Gansu, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Jiangxi, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, Sichuan, Yunnan), Tibet, Afghanistan (Badakshan, Wakhan, Kunar \/ Nuristan, Parwan), Bhutan, India, Myanmar [Burma] (Kachin), Nepal, Pakistan (Kurram, Waziristan, Chitral, Swat, Hazara), Pakistani Kashmir (Gilgit, Hunza, Astor, Baltistan), Jammu & Kashmir (Zanskar, Poonch, Kashmir), Sikkim,<\/span> Chumbi, Russian Far East (incl. Kamchatka), Japan (Honshu), Tajikistan<\/span> as per Catalogue of Life<\/span><\/a>;<\/div>\n
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\"\/wp-content\/uploads\/2020\/10\/IMG_1893-2.jpg\"<\/a>\"\/wp-content\/uploads\/2020\/10\/IMG_1892.jpg\"<\/a>\"\/wp-content\/uploads\/2020\/10\/IMG_1895-2.jpg\"<\/a><\/a>\"\/wp-content\/uploads\/2020\/10\/IMG_1896-1.jpg\"<\/a><\/div>\n
ID request-131011-PKA3<\/a>:\u00a05 images<\/div>\n
This garden plant<\/span> was seen in the guest house harden<\/span> at Leh.<\/span><\/div>\n
Date\/Time: 16-09-2011 \/ 08:15AM
\nLocation: Leh, Ladakh
\n<\/span>Habitat: Garden
\n<\/span>Plant Habit: Herb (around 1m)<\/span><\/div>\n
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E. angustifolium<\/i> because flowers are in terminal spike. They are axillary in E. latifolium<\/i><\/span><\/p>\n

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I think this must be what was known as E.angustifolium<\/i>\u00a0which apparently is often cultivated as an ornamental plant, though would be easy enough for it to have arrived on the wind.\u00a0 Commonly known as ‘Rosebay willow-herb’<\/b> and ‘Fireweed<\/b>‘ in UK.\u00a0 Its phenomenal spread in the UK (150 years ago it was a local plant in UK but now widespread esp. in the South) is attributed to the increasing areas of cleared woodland and waste land.\u00a0 An early coloniser of bare ground, appeared on bombed sites after the London Blitz of WWII.<\/div>\n
I have some images of this taken in the UK which I shall post to help illustrate the characteristics of the plant better and avoid any confusion with what was E.latifolium<\/i>.<\/div>\n
Assuming it is correctly identified\u00a0there have been\u00a0nomenclatural\/taxonomic change.\u00a0For some time this and E.angustifolium<\/i> have been transferred to another genus in the Onagraceae<\/i> family. This is now (according to most sources) Chamerion angustifolium<\/i>.\u00a0 The genus Chamerion<\/i> is separated from Epilobium<\/i> (most willowherbs in the Himalaya remain in Epilobium<\/i>) on the basis of all leaves being alternate, flowers held horizontally, slightly zygomorphic,\u00a0 <\/span>Whereas in Epilobium<\/i> at least the lowest leaves are opposite, flowers +\/- erect when open.<\/span>\u00a0 The change of genus is accepted by senior British botanists.
\nThis species is\u00a0very common\u00a0in Kashmir and also Zanskar\/Suru Valley (where I\u00a0observed it in 1980)\u00a0@ 2300-4850m.<\/span>\u00a0<\/span>Flora of Lahaul-Spiti says<\/span> frequent amidst stones & boulders.<\/span><\/div>\n
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Epilobium angustifolium<\/i><\/span> subsp. <\/span>circumvagum<\/i><\/span> Mosquin<\/span><\/a>\u00a0<\/span>as per details and distribution\u00a0herein.<\/span><\/p>\n<\/div>\n

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\"\/wp-content\/uploads\/2020\/10\/Chamerion%20angustifolium%20-Epilobium%20angustifolium-%20%20growing%20in%20the%20UK%20-Chris%20Chadwell-%20III.JPG\"<\/a>\"\/wp-content\/uploads\/2020\/10\/Chamerion%20angustifolium%20-Epilobium%20angustifolium-%20%20growing%20in%20the%20UK%20-Chris%20Chadwell-%20I.JPG\"<\/a>\"\/wp-content\/uploads\/2020\/10\/Chamerion%20angustifolium%20-Epilobium%20angustifolium-%20%20growing%20in%20the%20UK%20-Chris%20Chadwell-%20VI.JPG\"<\/a>\"\/wp-content\/uploads\/2020\/10\/Chamerion%20angustifolium%20-Epilobium%20angustifolium-%20%20growing%20in%20the%20UK%20-Chris%20Chadwell-%20V-2.JPG\"<\/a>\"\/wp-content\/uploads\/2020\/10\/Chamerion%20angustifolium%20-Epilobium%20angustifolium-%20%20growing%20in%20the%20UK%20-Chris%20Chadwell-%20II.JPG\"<\/a>\"\/wp-content\/uploads\/2020\/10\/Chamerion%20angustifolium%20-Epilobium%20angustifolium-%20%20growing%20in%20the%20UK%20-Chris%20Chadwell-%20IV.JPG\"<\/a><\/div>\n

Fwd: Epolobium angustifolium (now Chamerion angustifolium) in UK<\/a> : 1 post by 1 author. Attachments (6)<\/span><\/div>\n
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Here with promised images of what is commonly known\u00a0in UK as ‘Rosebay willowherb’<\/b> or ‘Fireweed’<\/b>.\u00a0 I advise, as I always do, that these images are of a UK form\/variant of a species <\/span>which is widespread in Europe, Asia and N.America.<\/span>\u00a0Such widespread species may, in time, be studied further and it concluded that variants should be recognised as distinct taxa, whether at varietal, subspecies or even species level – thus its characteristics may not match perfectly the forms found in the Himalaya.
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Nevertheless, I consider they represent a useful reference for comparison purposes.
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The first 5 images are from waste ground\u00a0between a small\u00a0wood and an arable field. The final image is of a plant growing out of an old bridge over a small river.\u00a0<\/span>This species spreads rapidly colonising by air disturbed ground and all sorts of other habitats.\u00a0Presumably, the same applies in the Himalaya.<\/span>
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Its stigmas are deeply 4-lobed, becoming downward curved<\/span> – the same applies to Chamerion latifolium<\/i> and Epilobium hirsutum<\/i> (also E. conspersum<\/i> found from C.Nepal to SW China).
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We need all the characteristics which can separate the large number of Epilobiums<\/i> (sensu lato) found in the Himalaya.\u00a0There are 15 recorded for Ladakh alone!
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The transfer to Chamerion<\/i> is accepted in the UK.\u00a0\u00a0Just to complicate the matter further, this plant was known as Chamaenerion angustifolium<\/i> in ‘Flora of the British Isles’ (1962) which was the standard reference when I began studying botany at University back in 1977.
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It has been superseded by the ‘New Flora of the British Isles’ by Professor Clive Stace. I have a second-hand copy of the Second Edition (1997) which was cheaper – there is a Third Edition.
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In the latter publication this plant is under Chamerion angustifolium<\/i> with the ‘New’ flora the standard reference these days.<\/span> I am somewhat “out-of-touch” with developments in British Botany (with my identification skills rather rusty, as until 2015, had not botanised seriously in UK since the 1980s) as have concentrated upon Himalayan flora for the past 30 years.
\nGiven that the UK has a smaller flora and is (and has for 300 years) been blessed with many active field botanists (many ‘amateurs’ in the sense they did not hold a professional position but frequently of professional standard), my approach has been that there is greater need for me to concentrate upon Himalayan flora.<\/span><\/div>\n
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Epilobium angustifolium in FOI<\/a> : 3 posts by 2 authors.<\/div>\n
Epilobium angustifolium in FOI<\/span><\/a> should be Epilobium angustifolium<\/i><\/span> subsp. <\/span>circumvagum<\/i><\/span> Mosquin<\/span><\/a>\u00a0as per images and details herein.<\/div>\n
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Thanks …, Corrected:<\/div>\n
http:\/\/www.flowersofindia.net\/catalog\/slides\/Fireweed.html<\/span><\/a><\/div>\n<\/div>\n
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\nLadakh, August 2022 :: Epilobium angustifolium subsp. circumvagum :: ARK2022-141<\/a>: 4 high res. images.<\/p>\n

This was at the Leh resort<\/span> in August 2022.<\/span><\/div>\n
Epilobium angustifolium<\/em> subsp. circumvagum<\/em><\/div>\n
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Requested to please validate.<\/p>\n
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Yes<\/p>\n

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Awesome photographs.<\/p>\n

I have seen this Onagraceae<\/em> member somewhere in California. But unable to trace the photos from my archives.<\/p>\n
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Agree with the id.<\/p><\/div>\n

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References:<\/div>\n
The Plant List Ver.1.1<\/a>\u00a0\u00a0Catalogue of Life<\/a>\u00a0 Flora of China<\/a> FOC illustration<\/a> \u00a0Flora of Pakistan<\/a> \u00a0FOP illustration<\/a> Annotated checklist of Flowering plants of Nepal<\/a> Flowers of India<\/a>\u00a0 IBIS Flora<\/a> Encyclopedia of Life<\/a> (Images)\u00a0\u00a0Calflora<\/a><\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Epilobium angustifolium subsp. circumvagum Mosquin, Brittonia 18: 167 1966.\u00a0(syn: Chamaenerion angustifolium subsp. circumvagum (Mosquin) Moldenke; Chamaenerion angustifolium var. platyphyllum Daniels;\u00a0Chamaenerion danielsii (D. L\u00f6ve) Czer.; Chamerion angustifolium var. canescens (A. W. Wood) N. H. Holmgren & P. K. Holmgren; Chamerion angustifolium subsp. circumvagum (Mosquin) P. C. Hoch; Chamerion danielsii (D. L\u00f6ve)…<\/p>\n","protected":false},"author":2,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"ht-kb-category":[6658],"ht-kb-tag":[],"class_list":["post-1410693","ht_kb","type-ht_kb","status-publish","format-standard","hentry","ht_kb_category-epilobium"],"_links":{"self":[{"href":"https:\/\/efloraofindia.com\/wp-json\/wp\/v2\/ht-kb\/1410693","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/efloraofindia.com\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"https:\/\/efloraofindia.com\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/efloraofindia.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/efloraofindia.com\/wp-json\/wp\/v2\/comments?post=1410693"}],"version-history":[{"count":0,"href":"https:\/\/efloraofindia.com\/wp-json\/wp\/v2\/ht-kb\/1410693\/revisions"}],"wp:attachment":[{"href":"https:\/\/efloraofindia.com\/wp-json\/wp\/v2\/media?parent=1410693"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/efloraofindia.com\/wp-json\/wp\/v2\/ht-kb-category?post=1410693"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/efloraofindia.com\/wp-json\/wp\/v2\/ht-kb-tag?post=1410693"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}