842 LXV. COMI'OSIT^. [Cassinia. 



5. C. subtropica (almost tropical), F. v. M. Fragm. i. 17; Benth. hi. Austr. 

 iii. 588. A tall slender shrub, the branches tomentose-pubeseent. Leaves 

 petiolate, from obovate to elliptical-oblpng, obtuse or mucronulate, under lin. 

 long, glabrous and smooth above, white or rusty-tomentose underneath, the 

 margins scarcely recurved. Flower-heads small and numerous, in a long loose 

 terminal panicle. Involucre cylindrical, about 2 lines long, straw-coloured or 

 reddish-brown, the bracts very thin. Florets usually 3, with receptacle scales 

 between them as in the rest of the genus. 



Hab.: On the borders of many southern scrubs. . 



Wood of a grey colour, close grained. — Bailey's Cat. Ql. IFoods No. 2-58b. 



35. IXIOLiENA, Benth. 



(Involucral bracts of one species viscid.) 



Involucre campanulate or hemispherical, the bracts numerous, linear or 

 narrow linear-lanceolate, herbaceous or rigid, the inner ones with small scarious 

 or coloured tips, sometimes radiating. Eeoeptacle flat or convex, without scales. 

 Florets all hermaphrodite, tubular, 5-toothed, or rarely a very few outer ones 

 female and filiform. Anthers with long fine tails. Style-branches slender, 

 capitate or truncate at the end. Achenes angular or terete, not beaked. Pappus 

 of fine capillary bristles, entire or shortly barbellate. — Herbs, either annual or 

 with a perennial base. Leaves alternate, entire. Flower-heads on terminal 

 peduncles. 



The genua is limited to Australia. It is nearly allied to Helichrysum, differing chiefly in the 

 involucre. 



Involucres hemispherical, the bracts very narrow, the inner ones with small 

 scarious tips, not coloured. 



Pappus scarcely barbellate, scarcely half as long as the corolla .... 1. I. brevicompta. 



Pappus barbellate, nearly or rarely quite as long as the corolla. Leaves 



mgatly lanceolate, acute. Pappus-bristles about 8 to 12 2, I. Uptolepis, 



Involucres campanulate, the bracts linear or linear-lanceolate. Pappus as 



long as the corolla 3. 7. tomentosa. 



1. I. brevicompta (pappus short), F. v. M. Fragm. i. 53 ; Benth. Fl. Austr. 

 iii. 597. A branching erect or decumbent annual, or perhaps perennial, with a 

 hard almost woody base, more or less cottony- white. Leaves linear or lanceolate, 

 the larger ones stem-clasping at the base. Peduncles long, leafless or with a few 

 very small linear leafy bracts. Involucre hemispherical, 4 to 5 lines diameter, 

 the bracts numerous, linear, rather rigid, pubescent, the inner ones with small 

 narrow scarious tips. Florets very numerous, longer than the involucre, all 

 hermaphrodite. Achenes glabrous, angular. Pappus of about 10 bristles, much 

 shorter than the corolla, shortly united at the base, simple or scarcely barbellate. 



Hab.: Peak Downs, F. v. Miteller ; Narran, Mai'anoa, and Balonne Hivers, Mitchell. 



2. I. leptolepis (bracts slender), Benth. Fl. Austr. iii. 597. A branching 

 perennial with a hard woody base, with a loose cottony wool which often 

 disappears by the time of flowering. Leaves linear or lanceolate, very acute, 

 usually rigid and scarcely stem-clasping at the base, flat or with revolute margins. 

 Peduncles longer than in I. tomentosa, with few smaller leafy bracts. Involucre 

 hemispherical (or, when young, broadly campanulate), with numerous linear 

 rigid bracts, more or less glandular, the inner ones 2 to 2J lines long, with 

 narrow scarious tips, more prominent than in 7. tomentosa. Florets very 

 numerous, on a broad flat receptacle, longer than the involucre. Achenes 

 glabrous or very slightly pubescent. Pappus of about 8 to 12 bristles, barbellate 

 from the base, very much shorter than in I. tometitosa, although sometimes 

 nearly as long as the corolla. — Helichrysum leptolepis, DC. Prod. vi. 194; 1. tomen- 

 tosa, var. glabrata, Sond. in Liuneea, xxv. 504. 



Hab.: Southern inland localities. 



