Pseudognaphalium Kirp.

Ghazanfar, S. A., Edmondson, J. R. & Hind, D. J. N. (Eds). (2019). Flora of Iraq, Volume 6: Compositae.Kew Publishing

Morphology General Habit

Annual, biennial or perennial herbs

Morphology Stem

Stems erect or ascending,  simple  or  branched, solitary or many, tomentose or lanose, stipitate-glandular, leafy throughout, often clothed in dead leaves below.  Leaves  alternate,  sessile  or  pseudopetiolate  to  petiolate,  bases often decurrent, lamina linear, lanceolate, linear-lanceolate, oblanceolate or spatulate, discolorous or sometimes concolorous, surfaces woolly or tomentose, or glandular, margins entire, flat or undulate, apex acute to acuminate.  Inflorescences  terminal,  usually  with dense clusters of capitula, corymbose-paniculate, or cymose, capitula sessile or short- pedicellate

Morphology Reproductive morphology Inflorescences Capitulum

Capitula  heterogamous,  disciform,  numerous;  involucres  broadly  cylindrical to campanulate; phyllaries 3- or 4- seriate, hyaline, outer broadly elliptic, apices rounded to obtuse, tomentose at base, middle oblanceolate tomentose at base, innermost glabrous, equalling or slightly exceeding florets, white to yellow, often buff- or cream- coloured, stereome usually divided, rarely undivided; receptacle smooth or alveolate, epaleaceous

Morphology Reproductive morphology Flowers Florets

Marginal florets female, (25–) 40–130, corollas filiform or narrowly tubular, glabrous, 3- or 4- lobed, yellow

Disc

Disc florets hermaphrodite, florets 5–10 (–25), corollas tubular, glabrous, yellow, white or purplish, scarcely expanded, usually 5-lobed, lobes  stipitate-glandular; apical anther appendages ovate, flat, basal anther appendages sagittate; style arms truncate, apically pubescent

Morphology Reproductive morphology Fruits

Achenes ellipsoid or obovoid, brown, glabrous, rarely  setuliferous, setulae when present of clavate myxogenic twin-hairs; carpopodium minute; pappus setae uniseriate, capillary, barbellate, bases free but coherent by patent cilia, white, apical cells ±clavate.

Distribution

A genus of about 90 species (even recorded as high as 150 – Dillon, 2005: 139) mostly in North and South America, but with several in Africa and Asia and a number of weedy species.

M. Thulin et al. Flora of Somalia, Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology General Habit

Perennial, annual or biennual herbs

Morphology Leaves

Leaves alternate

Morphology Reproductive morphology Inflorescences

Capitula in small loose terminal corymbs, disciform; receptacle epaleate; phyllaries in 3–4 series, subequal. Outer florets yellow, female, filiform; inner florets bisexual, fewer than the outer, yellow, lobes glandular, anthers short-tailed, style-branches truncate

Morphology Reproductive morphology Fruits

Achenes usually glabrous, with mucilaginous hairs; pappus of barbellate bristles, basally with patent cilia.

Distribution

About 100 species, mainly from South and Central America, but several species in Africa and Asia.