Bidens.] LXV. COMPOSITE. 865 



3. B. bipinnata (twice -pinnate), Linn.; DC. Prod. v. COS ; Benth. Fl. 

 Austr. iii. 543. A glabrous annual, resembling B. pilosa, but the leaf-segments 

 are usually again divided into small deeply toothed or lobed segments, the 

 flower-heads are smaller, the involuoral bracts less bordered, and the ray-florets 

 small and yellow. 



Hab.: Islands of the Gulf of Carpentaria, E. Brown; common on the sandy, seaooasts, R. 

 Brown and others ; islands of Moreton Bay, F. v. Mueller and others. 

 The species is common in most warm countries both in the New and the Old World. 



68. GLOSSOGYNE, Cass. 

 (Style-branches tongueJike.) 

 (Diodontium, F. v. M.) 

 Involuoral bracts few, in about 2 rows, narrow and nearly equal. 

 Eeceptacle chaffy. Eay-florets female, ligulate, fertile or sometimes wanting ; disk- 

 florets tubular, hermaphrodite, 4 or 5-toothed. Anthers obtuse at the base. Style- 

 branches ending in subulate points. Achenes narrow, usually flattened. Pappus 

 of 2 to 4 rigid retrorsely hispid or smooth persistent awns.— Glabrous perennials, 

 with alternate or opposite, pinnate or undivided narrow leaves. Flower -heads 

 small on long terminal peduncles. 



A small genu? extending over tropical Asia, to which have also been referred one or two 

 Brazilian species. Of the 3 Queensland species, 1 is also in the Indian Archipelago, the other 2 

 are endemic. It is very closely allied to Bidens, and further investigation of the allied American 

 plants may induce its reduction to a section of that genus.— Benth. 



Leaves alternate, pinnate. Eay-florets few. Disk-florets 4-toothed. 

 Style-branches of the disk-florets very long. Achenes longitudinally striate, 



the awns erect or slightly spreading 1. G. tenuifolia. 



Style-branches rather short. Achenes transversely rugose, the awns very 



spreading or reflexed 2. G. retroflexa. 



Leaves, lower and upper ones simple, centre ones pinnate. The achenes 

 almost concealed by the bracts 3. G. orthochceta. 



1. Cr. tenuifolia (leaves slender), Cass.; DC. Prod. v. 632 ; Bmth. Fl. 

 Austr. iii. 544. Stock perennial, tufted, sometimes almost woody, with erect 

 dichotomous stems, 6in. to 1ft. high, often almost leafless, or sometimes elon- 

 gated decumbent and leafy at the base. Leaves chiefly radical or nearly so, the 

 lowest sometimes cuneate and 3-lobed, all the others pinnately divided into 5 or 

 7 stiff linear segmeiits either entire or 2 or 3-lobed. Flower-heads small, on 

 long slender terminal peduncles. Involucre campanulate not 2 lines long. Eay- 

 florets small, yellow, spreading. Achenes linear, flattened, about 4 lines long, 

 striate, with 8 or more numerous ribs on each face, crowned by 2 erect or 

 slightly diverging awns. — Bidens temiifoUa, Labill. Sert. Austr. Caled. 44 t. 45 ; 

 Qlossogyne pedunculosa, DC. Prod. v. 632 ; O. bidentidea, F. v. M. in Linnaea, 

 XXV. 402 ; Bidens denudata, Turcz. in Bull. Moso. 1851, i. 183. 



Hab.: Northumberland Islands and Shoalwater Bay, B. Brown; Cape Cleveland and Rodd's 

 Bay, A. Cunningham ; Cape York and Port Curtis, M'Gillivray ; Eockingham Bay, Dallachy ; 

 Albany Island and Brisbane Biver, Moreton Bay, F. v. Mueller. 



The species is also in New Caledonia and in the Indian Archipelago, and differs but very little 

 from the Bast Indian G. jpinnatifida. — Benth. 



2. Ct. retroflexa (awns reflexed), F. v. M. Fragm. i. 51 ; Benth. Fl. Austr. 

 iii. 544. A tufted perennial, with precisely the habit and foliage of the ordinary 

 form of G. tenuifolia, and the same inflorescence, involucre and florets, but the 

 style- branches although filiform are shorter and glabrous, the achenes are 

 thicker, transversely rugose, and the awns, usually 3, are very spreading or 

 reflexed on the achene. 



Hab.: Basaltic plains between Peak Range and Darhng Downs, F. v. Mueller. 



