.
Pennsylvania Cudweed, Pennsylvania everlasting; 
.
Annual herb, up to 25 cm tall, slightly branched, leaves simple, spathulate, white tomentose especially on lower surface; capitula in short clusters; involucre bracts with white hairs; cypsella, pappus hairs white,
.
Leaf surfaces of different colour, upper white hairy, lower almost glabrous; basal leaves persistent at anthesis; inflorescence spicate, lower glomerules of heads often pedunculate …… Gamochaeta purpurea
.
Leaf surfaces not markedly different; basal leaves withered at anthesis; heads in spicate panicles, densely wooly 2/3 from base …….. Gamochaeta pensylvanica
.
It is true that the three species are very close, Gnaphalium purpureum, G. pensylvanica are shifted to genus Gamochaeta on the basis of pappus being connate at the base, whereas in Gnaphalium they are free at base and fall individually.
.
This is what Flora of China writes about Gnaphalium polycaulon
Similar to Gamochaeta pensylvanica, this species differs by its more compact habit, oblanceolate leaves, and free, separately deciduous pappus bristles more dilated at apex.”
.

Herbs, erect, upto 50 cm high; stem, with thin, white cottony tomentum. Leaves spathulate, narrowed at base, broadly rounded and shortly mucronate at apex, entire, 1-7 x 0.1-1 cm, puberulous on upper surface, white pannose on lower surface. Heads in short spicate clusters, ca 2 mm across; peduncle ca 1 mm long. Involucral bracts 3-4-seriate; outermost brown, occasionally pink at apex, oblong-spathulate, obtuse-acute, with white woolly tomentum at base. Ray florets female, with filiform corolla, ca 1 mm long, pink at mouth. Disc florets bisexual, ca 2 mm long, 5-toothed. Achenes oblong, ca 0.5 mm. Pappus hairs white, united at base. 

Flowering and fruiting: Throughout the year
Grasslands  
North and South America, Europe; adventive in New Zealand, India & Pakistan

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wild herb ID from Hooghly 20-04-12 SK-1:

Please identify this common wild herb that can found on roadside as well as on grassland.
Species : UNKNOWN
Habit & Habitat : wild herb, roadside, grassland
Date : 12-Feb-2012, 9.00 a.m.

Place : Hooghly, WB


I hope Gamochaeta pensylvanica, the connate pappus is clearly seen 


One more question, please, is it native or comes from North America?


North American weed now spread in many parts of the world.


I have heard that Parthenium also came from America.


For Parthenium please visit International Parthenium Research News Group at

You can also join IPRNG Yahoo group at

AP2-Plant for id from Ambala Cantt Haryana:  please help me to identify this plant and its family…
photographs taken on 1 may 2012
Descriptions
place-ambala cantt
month- may
habitat-roadside,fields
habit-herbaceous,erect
stem-weak
height-about 15 cm


This looks like Gamochaeta pensylvanica (Willd.) Cab. Syn. Gnaphalium pensylvanicum Willd. from Asteraceae



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request for plant id…place-ambala cantt…habitat-garden: Please help me to identify this plant..
Descriptions
Place-ambala cantt
Month-1 Feb
Habitat-garden


I think Gamochaeta pensylvanica (Willd.) Cabrera


Yes, Gamochaeta pensylvanica (Willd.) Syn. Gnaphalium pensylvanicum Willd. from Asteraceae, this is a weed

rather than a garden plant



 

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ASTERACEAE Fortnight Part 2-Discoid heads: Gnaphalium sp(?) from Kamrup district, Assam_KD_3 : Attachments (5). 3 posts by 3 authors.

Attaching images of what looks likeGnaphalium sp(?) . Please ID the Sp.
Date :26.04.2013
Location: Kamrup district
Family : Asteraceae
Genus & species : Gnaphalium sp(?)
Habitat: Grows wild on waste places

Habit : Herb


To me it looks like Gnaphalium pensylvanicum now known as Gamochaeta pensylvanica.


I think … is right



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Gamochaeta pensylvanica (Willd.) Cabrera (=Gnaphalium pensylvanicum Willd.) is a common pantropical weed found throughout India.

Photographed in Pantnagar, Uttarakhand.


Common in Delhi also.



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Gamochaeta pensylvanica (Willd.) Cabrera

Syn: Gnaphalium pensylvanicum Willd.; Gnaphalium purpureum auct.) from Delhi

Annual herb, up to 25 cm tall, slightly branched, leaves simple, spathulate, white tomentose especially on lower surface; capitula in short clusters; involucre bracts with white hairs; cypsella, pappus hairs white,

Photographed from Vikas Puri, New Delhi, a weed of cultivated fields.



 

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This one is a common herb of moist places, shot from Panipat.. I could not trace more pics, though I have… I hope the id is right.. this is Gamochaeta pensylvanica



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Gnaphalium purpureum L (?) from Assam-6 Feb 2014 : 3 posts by 2 authors. Attachments (5).

Attached images may be Gnaphalium purpureum L (?). Please ID the plant.
Date :07.02.2014
Location: Assam
Family : Asteraceae
Genus & species : Gnaphalium purpureum L (?)
Habitat: Grows wild on side of the pond
Habit : Herb

Current accepted name as per GRIN is Gamochaeta purpurea (L.) Cabrera


I think it may be Gamochaeta pensylvanica only as per images herein.



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Gnaphalium purpureum — Purple Cudweed ? (260409YS1-3) : 6 posts by 4 authors. Attachments (3)
In my kitchen garden, a wild weed, Delhi. Today (29.4.09).
Looks like Gnaphalium purpureum at www.discoverlife.org/…/herbs.html

Please help ID.


I was unable to open your link. May be as per link: Missouri Bot. Plant & PPws (pictures & details)


It resembles with the one given at the link. Thank you for the help. I am accepting this ID till proved otherwise.


this one is Gnaphalium indicum


Plants reported G. purpureum from Delhi are actually Gamochaeta pensylvanica Flowers of India


 


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id please, Rajarhat,WB, 17/12/16 : 4 posts by 3 authors. Attachments (1)

Rajarhat, WB, 17.12.16


Gamochaeta pensylvanica (Asteraceae) to me.
Please compare with G.pensylvanica in efi.


Thank you so much sir.



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SK237DEC14-2016:ID : 5 posts by 3 authors. Attachments (8)

Location: Chautara , Nepal
Altitude:  4700 ft.
Date: 12 December 2016

Hopefully Gamochaeta pennsylvanica


Gnaphalium pensylvanicum Willd. (provisionally accepted name)

Thank you sir!

Gamochaeta pensylvanica (Willd.) Cabrera (accepted name)

as per the Plant List and the CofL.

Attachments (8)



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Gamochaeta pensylvanica (Willd.) Cabrera (accepted name) : 3 posts by 2 authors. Attachments (6)

Location: Soureni, Mirik, India
Date: 21 April 2017

Altitude: 4400 ft.


 


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Again missed posting this earlier.

Found while going through my folders.
Seen at a resort in Dhikuli.
Sorry for the bad picture quality.

Gamochaeta pensylvanica (Asteraceae), a common spring weed.
Please see eFI page

/species/a—l/ar/asteraceae/asteroideae/gnaphalieae/gamochaeta/gamochaeta-pensylvanica



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ANAPR36 Blumea(?) sp. for identification : 4 posts by 2 authors. Attachments (3)

Family: Asteraceae
Date: 25th January 2015
Place: Bangalore University, Bangalore

Habit: Herb
Habitat: Disturbed wet patch inside the forest


Can this be Gnaphalium polycaulon Persoon?


I agree with … for identification of the plant


I think this will be Gamochaeta pensylvanica as per images and references herein.



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Yeoor Hills  … part of Sanjay Gandhi National Park

Date: December 29, 2019 … Altitude range: about 100 ft (30 m) to 1575 ft (480 m) asl

¿ Gnaphalium polycaulon ?  


Yes, appears to be Gnaphalium polycaulon as per comparative images at Gnaphalium


I think this will be Gamochaeta pensylvanica as per images and references herein. 



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Gnaphalium polycaulon Pers.(?) from Assam-4 Feb 2014 : 3 posts by 2 authors. Attachments(6).

Attached images may be Gnaphalium polycaulon Pers. Please ID the plant.
Date :07.02.2014
Location: Assam
Family : Asteraceae
Genus & species : Gnaphalium polycaulon Pers. (?)
Habitat: Grows wild on bank of the pond
Habit : Herb    

efi page on Gnaphalium polycaulon


I guess ID is correct..


I think this will be Gamochaeta pensylvanica as per images and references herein. 



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Gnaphalium sp. from Assam -5 Feb 2014 : 3 posts by 2 authors. Attachments (5).
Attached images are Gnaphalium sp. Please ID the plant.
Date :07.02.2014
Location: Assam
Family : Asteraceae
Genus & species : Gnaphalium sp.
Habitat: Grows wild on bank of the pond
Habit : Herb


Gnaphalium species so far in efi


Gnaphalium polycaulon Pers. ??


I think this will be Gamochaeta pensylvanica as per images and references herein. 


¿ Gnaphalium polycaulon ? Pers.

Place, Altitude: at Tungareshwar Wildlife Sanctuary (about 1072 ft asl)
Date, Time: 23 FEB 13 12:29pm
Habitat: wild, on banks of large stream (dried-bed)
Habit: herb, about 20 – 30 cm, flower-head about 3 mm across.


I have compared with net images and ID seems correct.


I think this will be Gamochaeta pensylvanica as per images and references herein. 



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A mystery flower… Kalatope id al260511a: Found this plant next to the previous query (by the roadside) I have 

sent today… did not notice it flowering..??
Location Kalatope, chamba
Altitude 2100 mts
Habit herb
Habitat wild/roadside
Plant height 9 inches

I think Gamochaeta purpurea (= Gnaphalium purpureum).


Tropicos treats Gamochaeta purpurea (L.) Cabrera under the synonymy of Gamochaeta americana (Mill.) Wedd., whereas The Plant List treats them separately.


Your mystery plant is not Gamochaeta purpurea, earlier described under the names Gnaphalium purpureum or G. pennsylvanicum (some times treated distinct Gamochochaeta purpurea and G. pennsylanica as per GRIN or one species Gamochaeta purpurea as per Kew List). That plant grows commonly in Delhi and uploaded by me at FOI. It has leaves which are velvety on both sides, though much more sensely below. FOI

Your plant has leaves which are clearly green on upper surface, a feature of Gnaphalium hypoleucum (still under the same genus)


I think it is close to images at Gamochaeta pensylvanica (Willd.) Cabrera


I also agree with you


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Cudweed? ABAUG2016/49 : 9 posts by 3 authors. 3 images.
This one is from yesterday. I found it at 2100m. It looks like a cudweed. Please help with the ID.
Above Dharamshala, HP
2100m

18 August 2016.


Pl. check with Amaranthus blitum ?


Thanks … This seems possible but my pictures are perhaps not sufficient to show all characteristics. From what I can see from my photos, the leaves have no stalks and inflorescence happening predominantly at the top.


This is a Gnaphalium sp. as … have pointed out..!!


Thank you … I am looking at the keys but haven’t reached a positive ID yet. I am hiking up today and will try to see the plant more closely.

Thanks, … Pl. check Images by Alok Mahendroo under Pseudognaphalium hypolecum (DC.), O. M. Hilliard & B. L. Burtt


Thank you … This is close. I will post better photos tomorrow hopefully.


Some additional images from Sunday. 3 images.


This looks different from the specimens of Pseudognaphalium hypoleucum from India as per GBIF– onetwothreefourfive.
I think this may be Pseudognaphalium luteoalbum as per keys in Flora of Pakistan and Flora of ChinaPOWOGBIF specimens


On further consideration, I think it is close to images at Gamochaeta pensylvanica (Willd.) Cabrera


 

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“For Id 120413RS2” : Attachments (3).  2 posts by 2 authors.
Date/ Time- 15/03/2013 at around 01:10 pm.
Location- Village Guniya, (Block Ghagra), District Gumla, Jharkhand.
23. 17’47.145” N, 84.53’29.562” E

Habitat- Garden, wild.


Gnaphalium sp. (Asteraceae).


Gamochaeta pensylvanica (Willd.) Cabrera


,


Gamochaeta pensylvanica (Willd.) Cabrera: 7 very high res. images.
Location: Kathmandu, Central Nepal
Altitude: 1400 m.
Date : 14 May 2021
Habitat : Wild in Garden !



.

References:

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