642 LXII. COMPOSITE. [ Helipterum. 
spathulate, rarely above 5 in. long, the upper ones few and small. Flower 
heads terminal. Invo oluere hemispherical, about 3 in. diameter without tle 
ray, the outer short, scarious bracts tinged with berg the inner ones with 
scarious claws and radiating petal-like lamine, 3 to 4 lines long, of a metallic 
ereen or yellowish-brown colour when dry (perhaps yellowish when fresh). 
Receptacle conical. Florets all hermaphrodite, the inner ones sterile. chenes 
densely villous. Pappus-bristles 10 to 15, plumose, the upper short cilia of 
each bristle condensed in a terminal tuft, usually deeper coloured than the 
rest of the pappus, the inner achenes abortive with a reduced pappus.— 
Schoenia chlorocephala, Turcz. in Bull. Mose. 1851, i. 193 ; Acrochininm mul- 
ticaule, A. Gray in Hook. Kew Journ. iv. 2 
W. Australia, Drummond, 4th Coll. n. 199. This may prove to be a variety of H. 
rubellum. 
acute. Flower-heads solitary on each branch, but the upper gene often 
numerous and panieulate. Involucre hemispherical, rather smaller than m 
s nthemoides, the bracts all white and petal-like, the outer a Se and 
gesi passing into the inner ones 1 a scárious claw and ra 
ceolate lamina of 3 lines or more. Receptacle homiepherical or ei 
Florets all bernaoodisi Achenes densely silky-villous. Pappu us of 7 to 
de rigid equally plumose bristles.—H. chionolepis, F. Muell. in Linnea, XXV. 
N. S. Wales. Molle’s Plains, Fraser; Darling and Lachlan rivers, Victorian and 
other Expeditions ; between Stokes Range and Cooper's Creek, Wheeler : 
S. Australia. Flinders Ran nge, Cudnaka, F. Mueller; Wills’ Creek, Howitt s Expe- 
dition ; Mount Searl, Warburt 
Var. Stuartianum. Rather taller flower- pos: be the onter bracts — a straw- 
colour. H. Stuartianum, Sond. in Linnga, — Murray river, F. Muell 
8. H. Pyrethrum, Benth. An erect glabrous simple or Sc 
branched annual of 6 to 8 in., the stem thickened at the base. Leaves 1 
— or € ven small and almost scale-like. | Fl per” 
lamine, spreading to $ in. diameter, pure white or aire with pink. » 
ceptacle conical. Florets all hermaphrodite, the inner ones pro roba bly ste 
— men) silky-villons. Pappus of 10 to 15 tege 
s dilated scale-like and united at the base or s 
Sr dee reg pyrethrum, Steetz i in d Preiss. wart 
w. alis Swan Bow ^. 34, Coll. n. 881. DH 
pus is rather variable, aupconcling that tof (Saiten a but the abit and involucre are 
unlike those of any species of that genu 
9. H. he teranthum, Zurez, in Bull. Mosc. 1851, i. 19 98. n 
annual of 6 in. to 1 ft., scabrous-pubescent and Gen hin ra 
H 
mper rcm geben eet 
wm keen Alger. ACEN ? : 
a ee ——— 
