A delicate annual herb much-branched from the base, branches up to 120 mm long, probably weakly erect or prostrate, filiform, thinly cobwebby, distantly leafy. Radical leaves up to 25 x 6 mm, half the length petiolar, cauline leaves subtending each dichotomy, similar to radical but diminishing in size upwards (as small as 5 x 2 mm), and petiole reduced to 1/2 to 1/2 total length, blade elliptic, tapering at both ends, apex obtuse to subacute, mucronate, both surfaces very thinly cobwebby. Heads heterogamous, campanulate, 3 x 2 mm, solitary at the branchlet tips on long(up to 15 mm), filiform, very thinly cobwebby peduncles, much shorter upwards and corymbosely arranged. Involucral bracts in 3 series, backs loosely cobwebby, tips exceeding flowers, lanceolate, subacute, more or less opaque white. Receptacle shallowly tubercled. Flowers 8-17, 3-8 ('female'), 4-110. Achenes 0.75 mm long with duplex hairs. Pappus bristles many, equalling corolla, tips subplumose, shaft barbellate, bases cohering by patent cilia.
More
Delicate, weakly erect or prostrate annual, branches up to 120 mm long. Leaves alternate, petiolate, elliptic, apex mucronate, both surfaces thinly woolly. Flowerheads disciform, 1 per axil on a slender peduncle, or few at branch tips; involucral bracts subacute, ± opaque, white; female florets fewer or slightly more than bisexual florets. Pappus of subplumose bristles, shaft barbellate, cilia at tips of bristles often thickened or elongated.
Similar to T. tenellum but bracts acute.
Home
