llephantopH.^., LtV. COMPOSITE. 79i 



penate, and usually narrowed into a petiole. Sfcem-leaves few and more sessile. 

 'lower-heads closely clustered into terminal hemispherical compound heads, of 

 early lin. diameter, surrounded by about 4 broadly cordate sessile leafy IjractSi 

 Qvolucral bracts narrow, very pointed, almost prickly. ^Wight, Ic. t. 1086 ; 

 lenth. Fl. Hongk. 170, with the synonyms adduced. 



Hab.: EndeavoUi' Biver, Banks and Solander. 



Common in the warmer regions of America, Africa, and Asia. 



6. ADENOSTEMMA, Forst. 



(Pappus gland-bearing.) 



Flower -heads, florets, and style of Eupatoriuni. Achenes obovate-oblong, 

 ontracted at the base. Pappus of 3, 4, or 5 short stiff bristles, each tipped by a 

 lobular or club-shaped gland. — Herbs, either glabrous or glandular, pubescent, 

 ieaves opposite. Flower-heads usually hemispherical, small. 



A genus of a very few American species, one of which spreads all round the warmer zone of 

 le elohe.—Benth. 



1. A. viscosum (viscid), Forst.; DC. Prod. v. Ill ; Benth. Fl. Atistr. iii. 

 62. Stem annual, erect or ascending, rooting at the base, and possibly renewed 

 second year by a creeping rhizome or stolons, glabrous or glandular-pubescent, 

 to 2ft. high. Leaves few, opposite, petiolate, from ovate to broadly triangular, 

 sually coarsely toothed, from barely lin. long and rather thick and rough to 3 

 r 4in. long, thin and glabrous. Flower-heads hemispherical, 3 to 4 lines 

 iameter, in a loose spreading terminal 2 or S-chotomous panicle, with very 

 mall leaves under the branches. Involucral bracts oblong, in about 2 rows, 

 i'lorets numerous, often hairy outside. Achenes more or less muricate or rarely 

 uite smooth.— Wight, Ic. t. 1087, 1088. 



Hab.. Endeavour Eiver, Banks and Solander; Eookhampton and Bockingham Bay, Bowman; 

 jizard Island, M'Gillivray ; common on wet land both north and south. 



"This is a common weed in the warmer regions of the Rlobe, especially in the Old World 

 ?here it extends northward to Japan. The species should include all those published by De 

 landoUe and others from the Old World, and at least A. brasiliense and A. triangiilare among 

 he American ones. — Benth. 



7. AGERATUM, Linn. 



(A name of Dioscorides for the Everlastings.) 



Involucre florets and style of Eupatoriuni. Achenes angvilar. Pappus of 5 or 

 chaffy scales or bristles, dilated at the base. — Herbs with the opposite leaves 

 nd habit of FAipatorinm. 



A genus of a small number of American species, one of which is spread all over the warmer 

 3gionB of the globe. 



1. A. conyzoides (Conyza-like), Linn.; DC. Prod. v. 108; Benth. Fl.\ 

 lustr. iii. 462. Billygoat Plant. An erect branching annual, 1 to 2ft. high, 

 lore or less hirsute with spreading hairs. Leaves opposite, petiolate, ovate, 

 renate. Flower-heads rather small, in dense terminal corymbs. Involucral 

 racts striate, acute, in about 2 rows. Florets numerous, pale blue or white. 

 Lchenes black. Pappus of 5 lanceolate awned chaffy scales, often serrate in the 

 3wer part.— Hook. Exot. Fl. t. 15 ; F. v. M. Fragm. v. 62. 



Hab.: Very common in northern parts. 



A common weed all over the warmer regions of the globe. 



