886 LXV. COMPOSITE. {Helipteruhi. 



in each genus closely allied to corresponding ones in the other, and the section Lmcrencella of 

 Helichrysum is an approach, both in habit and in the prominently barbellate pappus-bristles, to 

 Helipterum ; the species of each genus are, however, numerous both in Australia and South 

 Africa, and the character is not difficult to appreciate, it may therefore be convenient to retain 

 the two as distinct genera. — Benth. 



Section I. XSuhelipterum. — Involucre broadly hemispherical, with or without radiating 

 petal-like lamina; to the inner or intermediate bracts. 



Achenes villous with long silky hairs. 

 Eeoeptacle flat. Involucres with radiating laminae. Outer bracts 

 brown, scarious, inner with coloured laminae and broad claws. 

 Leaves narrow. Pappus equally plumose. 



Perennial. Involucral ray white I. H. anthemoides. 



Annual. Involucral ray yellow 2. H. polyr/alifolium. 



Beceptaole conical. Involucres with radiating lamins and broad claws. 

 Pappus equally plumose. Radiating involucral laminae white . . . 3. H, Jloribundum. 

 Achenes glabrous or papillose. 



Outer bracts few, broad, sessile, intermediate with subulate claws 



and radiating petal-like laminse . . i. H. incaimm. 



Outer bracts brown, scarious or coloured, intermediate with broad 

 claws and radiating petal-like laminae. 



Outer bracts wholly scarious or petal-like 5. H. Cotula. 



Outer bracts with a lanceolate rigid although coloured centre. 

 Achenes much compressed . 6. H. hyalospermum. 



(See also the section Lawrencella of Helichrysum, in which the pappus is almost plumose, and 

 Rutidosis Brownii, in which the pappus-scales are almost divided into bristles.) 



Section 11. VtOTOSon.— Involucres ovoid, turbinate- eampanulate or cylindrical, the outer 

 bracts appressed, scarious or rigidi the intermediate or inner with or rarely without radiating 

 petal-like lamince or tips. Achenes villous. Florets rarely above 12. 



Flower-heads small with conspicuous rays, in compact terminal corymbs. 

 Achenes shortly hirsute. Laminae of the inner bracts white, shorter 

 than their claws, those of the outer ones minute or none. Involucre 



ovoid-turbinate 7. H. polyphyllum. 



Flower-heads on long peduncles or loosely corymbose, with conspicuous 

 rays. Achenes densely silky-villous. Outer involucral, bracts with 

 obtusely scarious tips. 

 Glabrous. Flower-heads on long peduncles. Involucres ovoid . . . 8. H. strictum,. 

 Cottony. Flower-heads loosely corymbose. Involucres broadly tur- 

 binate 9. H. corymbiftorum. 



Flower-heads nearly sessile, in an irregular leafy corymb. Dwarf 

 branching plants, nearly glabrous. Involucres narrow, with very small 

 white laminsE. Florets 4 to 6 10. H. pygmteum. 



Section III. DXonencyantlies. — Involucres ovoid, cylindrical or eampanulate, the bracts 

 scarious or coloured loithout any or with very minute scarious radiatitig tips. Achenes glabrous 

 or papillose. Flower-lieads often very small. 



Flower-heads small and numerous, in dense corymbose clusters almost con- 

 tracted into heads. Erect cottony herb st J to IJft. Involucral bracts 

 very woolly inside at the base. Florets 2 to 4 11. H. moschatam. 



Flower-heads singly sessile within the floral leaves. Small annuals. 

 Florets above 20. Plant of 3 to 6in. Involucres broadly-ovoid. 

 Pappus-bristles of the perfect florets about 5, dilated and almost 

 scale-like 12. H. dimorpholepis. 



1. H. anthemoides (Chamomile-like), DC. Prod. vi. 216; Benth. Fl. Austr. 

 iii. 641. Eootstook perennial, with numerous erect simple rather slender stems, 

 rarely much above Iffc. high and often short, glabrous. Leaves linear, oEten 

 rather crowded, mostly ^in. long, rarely linear-lanceolate and longer, glabrous 

 and smooth, or more frequently marked with impressed dots. Flower-heads 

 solitary. Involucre hemispherical, spreading to about f to lin. diameter, in- 

 cluding the ray ; the outer bracts short, broad, scarious, tinged with brown, the 

 inner with broad scarcely ciliate claws and radiating petal-like laminss 3 to 4 

 lines long, of a pure white. Receptacle flat. Florets all Jiermaphrodite. 



