846 tiXt. COiStPOSi*^. [Acomis. 



1. A. Rutidosis (like a Eutidosis), F. c. M. Fra</m. ii. 89 ; Benth. Fl. Austr. 

 iii. 591. Erect, branching, and apparently annual, 1 to 2ft. high, more or less 

 woolly. Leaves petiolate, lanceolate or almost ovate-lanceolate, acute, narrowed 

 at the base, 1 to l^in. long, losing the wool from the upper side. Involucres 

 about 4 lines diameter, the outer bracts ovate, the inner ones oval-oblong. 

 Florets slightly dilated upwards, but not at the base. Achenes narrow. — Eutidosis 

 acoma, P. v. M. I.e. 



Hab.: Mount Perry, Jas. Keys. 



2. A. macra (long), F. r. M. Fragm. iv. 145; Bentk. Fl. Austr. iii. 591. 

 Nearly glabrous, the stems slender, almost filiform. Leaves linear -subulate, 

 acute, under lin. long. Involucre about 3 lines diameter, the bracts broadly 

 lanceolate, thickened in the centre but not clawed. Corollas glandular and 

 dilated over the achene at the base as in Cotula. Achenes oblong. — Rutidosis 

 macra, F. v. M. I.e. 



Hab.: Cape River, Bowmav. 



42. MYRIOCEPHALUS, Benth. 

 (The flower-heads numerous.) 



(Hyalolepis, DC; Antheidosorus, A. Gray; Gilberta, Turcz.; Lamprochlsena, Elaohopappus, 



and Polycalymma, F. v. M.) 



Flower-heads exceedingly numerous and sessile on a broad very flat receptacle, 

 in a dense cluster or compound head, surrounded by a general involucre of 

 numerous narrow bracts in many rows, each usually with a scarious tip or 

 radiating appendage. Partial heads 1 or few-flowered. Involucre of few bracts 

 (the outer ones including one on the general receptacle subtending each head), 

 usually contracted into a stalk-like base and scarious at the tip, the inner ones 

 scarious and transparent from the base or rarely all narrow and rigid. Receptacle 

 without scales. Florets hermaphrodite, tubular, slender, 8 to 5-toothed. Anthers 

 with more or less conspicuous points or tails at the base. Style-branches nearly 

 terete, truncate. Achenes more or less compressed. Pappus none or of 1 or 

 more awns or bristle-like scales, simple or more or less plumose. — Herbs, either 

 annual or with a perennial or woody base, often hoary or white, especially when 

 young, with woolly or cottony hairs. Leaves alternate,, entire. Clusters or 

 compound heads terminal, usually globose or hemispherical ; the flat receptacle 

 sometimes so broadly dilated that the outer flower-heads are reflexed. 



The genus is limited to Australia. It differs from Angianthus in the more perfect general 

 involucre and more developed common receptacle, the partial involucres sometimes reduced to 2 

 bracts with a single floret, so as in some species to bring the compound head of Myriocephalus 

 in close analogy to the simple head of Helichrysum. — Benth. 



Appendages of the general involuoral bracts under 1 line long or 



inconspicuous. 

 Dwarf plant. Leaves much longer than the flower-heads. Partial 



heads 1-flowered. Pappus of 1 very fine awn or none 1. M. rhhocephahts. 



Decumbent or ascending plant, under 6in. Leaves small, mostly 



cuneate or spathulate. Partial heads 4-flowered. Pappus of 1 to 



4 bristle-like scales . 2. 31. Rudalli. 



Appendages of the general involucral bracts 1 to 2 lines long, broad and 

 very conspicuous, white. Herbaceous and tall. Partial-heads 5 to 8- 

 flowered. Achenes woolly. Pappus of numerous ciliate bristles ... 3. M. Sfuartii. 



1. IWI. rhizocephalus (flower-heads near the root), Benth. Fl. Austr. iii. 

 557. A small tufted annual, the stem from | to 2 or Sin. long, covered with the 

 broad sheathing bases of the leaves. Leaves above the broad base linear, grass- 

 like, often 3 to 4in. long. Clusters of flower-heads globose or hemispherical, i 

 to fin. diameter, sessile amidst the upper leaves which form a^ outer involucre. 



