184 coMPOSiTiE. [Glossogyne. 



25. GLOSSOQYNE, Cass. 



Flower-heads heterogamous. Florets of the circumference female,' ligulate, 

 in a single series. Disk-flowers hermaphrodite, 4-toothed. Involucral bracts 

 in about 2 rows, naiTow. Eeceptacle chafty. Style-branches in the disk- 

 florets ending in long subulate points. Achenes as in Bidens, slender, 4-angled. 

 Pappus of 2 stiff persistent awns. — Leaves radical or alternate. 



A small genus, ranging from N. Australia to E. India, to which have also been referred 

 one or two Brazilian species. 



1. G. tenuifolia, Cass.; DC. Frod. v. 632. Stock perennial, tufted. 

 Leaves mostly radical, pinnately divided into 5 or 7 stifl" linear segments, either 

 all entire oi' the terminal one 3-lobed and the lower ones 2-lobed. Stems 

 dichotomous, erect, glabrous, 6 in. to 1 ft. high, almost leafless. Flower- 

 heads small, on slender terminal peduncles. Involucre carapanulate, not 2 

 lines long. Eay-florets small, yellow, spreading. Achenes about 4 lines long, 

 with 2 erect or slightly diverging awns. — Bidena denudata, Turczan. Bull. 

 Mosq. 1851, 183. 



Hongkong, Hance, Wright. The species extends from N. Australia to the Philippines 

 and S. China. The Indian G. pinnatifida is perhaps also a variety of the same, dis- 

 tinguished only by the longer, more rigid, and spreading awns of the pappus. The foliage, 

 habit, and flowers are the same. 



Tribe VII. JNTHEMIDEJE. 



Leaves alternate, often much cut. Flower-heads heterogamous or veiy 

 rarely homogamous. Florets of the circumference usually female, ligulate or 

 tubular. Disk-florets tubidar, hermaphrodite or rarely male, 4- or 5 -toothed. 

 Anthers obtuse or scarcely pointed at the base. Style of Senecionidece . Pap- 

 pus none or reduced to a small cup or ring or auricle. 



26. CHRYSANTHEMUM, Linn. 



Flower-heads heterogamous. Florets of the circumference female, ligulate, 

 in a single series. Disk-florets 5 -toothed. Involucre hemispherical; the 

 bracts imbricate, in few rows, scarious on the margin. Eeceptacle flat or 

 slightly convex, naked. Style-branches of the disk-florets truncate. Achenes 

 angular or 3-winged. Pappus a small ring or none. — Leaves alternate, mostly 

 lobed or divided. 



A large genus, widely distributed over the northern hemisphere in the Old World, with a 

 very few of the Arctic species extending into America. 



1. C. indiciim, Lmn.; Lindl. Bot. Reg. ^.1287. A shrub of 2 or 3 

 ft.; the upper branches and under side of the leaves usually cottony-pubescent. 

 Leaves stalked, ovate, toothed and lobed or sometimes deeply pinnatifid with 

 acute or mucronate teeth. Flower-heads few, in short terminal racemes. In- 

 volucre about 6 lines broad ; the inner scales completely scarious, the outer 

 ones herbaceous and cottony or pubescent in the centre, Ray spreading, pale 

 yellow. — Tyretlirum indicum, Cass. ; and Pyrethnim sinense, Sab. ; DC. Prod, 

 vi. 62. 



Ravines of Victoria Peak and other parts of the island, Champion and others. In a wild 

 state it appears to range from S. China to Japan. In this state the flower-heads are scarcely 



