638 LXII. COMPOSITA. [ Helipterum. 
or petal-like, more or less spreading or appressed .Receptacle flat, convex or 
conical, without scales, and in the Australian species without ‘bristles or 
but not longer than the others, 2- to 4- toothed, several in the centre frequently 
sterile. Anthers with fine tails. Style-branches nearly terete, truncate. 
Achenes angular terete or somewhat. flattened, very rarely contracted at the 
top but not “distinctly beaked, glabrous, papillose or more frequently densely 
silky-yillous. Pappus of capillary or very rarely dilated and almost scale- 
like bristles, finely Gagiegieete from the base, those of the female florets or 
of the central sterile ones sometimes fewer or wanti ing.—Herbs frequently 
annual, sometimes perennial, or very rarely slender divaricate shrubs with 
leafy stems, clothed with cottony wool or nearly glabrous. Leaves alternate 
or the lower ones very rarely opposite, entire. Florets yellow, the lamine 
of the involucral bracts usually white yellow brown or pink, often varying 
in all TM oe with intermediate shades i in the same ; species s. 
y j nd in t i 
pappus-bristles, to Helipterum ; the spec ach genus are, however, numerous both in 
Australia and South Africa, pe the oat | is not Gegen to ap Rot it may therefore 
be convenient to retain the two as distinct gen o species, H. pyrethrum an gs 
morpho: olepis, have the pappus- bristles dilated rid the Se tending to of 
of Rutidosis but with a very different involucre. Several S. African species "lave ee : 
the receptacle Eed with short bristles. The genus is also Së: connected with Wait 
throug ziana, and with the  Angianthoa through Cephalipterum, which is very 
nearly allied to Tar condensat 
Secriox I. Euhelipterum. Terep broadly hemispherical, with or without ra- 
Greg | pedal Hb lamine to the inn ediate bract 
Achenes villous with long silky hair 
Receptacle flat. Tnvolucres with Tadiating laminze 
Outer bracts thinly scarious or petal-like, inner. diem like T 
with narrow claws. Leaves broad, E spi 1. H. Manglesi. 
Outer bracts brown, scarious, — with Steg laiinge 
and broad claws. Leave: w 
Pappus with a terminal tuft of of compact ha hairs. Annual. 
pink . 2. H. roseum. 
E anthemoides. 
H. polygalifolium. 
D os 
Involucral 
Involueral ray yellow 
pech SR Involucres with radiating “Tamine and 
Radiatin "erger laminze red ish . b. H. rubellum 
ting involucral lamine m Lë eg 
Pappus equally plumose, Radiating Pu cmn rhe "white 7. H. floribun 
Pappus-bristles dilated and scale-like, nempe vao Ra- rum 
ing involucral laminze w white, Leaves small 8. H. pyretirum 
m js 
Receptacle flat or convex, M sig Involueral bracts 
with scarious tips, scarcely radiatin . 
