186 ■ COMPOSITE. [Cotula. 



Achenes bordered with a narrow callous wing, especially towards the summit. 

 — Pleiogyne antJiemoides, C. Koch, in Bot. Zeit. 1843, col. 40. P. cardio- 

 sperma, Edg. in Linn. Trans, xx. 71 ; Benth. in Kew Journ. Bot. iv. 235. 

 MacJilis hemispha7'ica, DC. Prod. vi. 140. 



In rice-fields, Champion, Wilford. Common in the plains of N. India, extending west- 

 ward to Egypt and northward to Sikkim and S. China. 



29. MYRIOGYNE, Less. 



All the characters of Cotula, except that the female florets, though very mi- 

 nute, have a tubular corolla nearly as long as the style, and the achenes are 

 4-angled and but slightly compressed. 



A small genus, chiefly S. Asiatic and Australian, with one species from extratropical S. 

 America. 



1. M. minuta. Less.; DC. Prod. vi. 139. A prostrate branching annual; 

 the slender somewhat woolly steins 2 to 3 in. or seldom near 6 in. long. 

 Leaves alternate, oblong, 3 to 5 lines long, narrowed at the base or almost 

 stalked, toothed or almost pinnatifid. Flower-heads about 1^ lines diameter, 

 at first terminal, but soon becoming leaf-opposed and sessile. Involucral 

 bracts in about 2 rows, scarious at the edges. Florets very minute, the fe- 

 males very numerous ; their corolla scarcely above a third the length of the 

 ovaiy. Achenes slightly liaiiy. — Ceutipeda orbicularis, Lour. ; Miq. Fl. Ned. 

 Ind. ii. 89. SpJiaromorphaa cerdlpeda, DC. Prod. vi. 140. 



In rice-fields, Wilford, Hance, Wright. Very common throughout India, from Ceylon 

 and the Peninsula to the Archipelago, extending also to Australia and northwai'd to the 

 Philippines, China, and Japan. 



30. ARTEMISIA, Linn. 



riower-heads heterogamous or rarely homogamous, usually few-flowered. 

 Florets all tubular; those of the circumference female, 3 -toothed, in 1 or 2 

 rows or sometimes wanting. Disk-florets hermaphrodite, 5 -toothed. Invo- 

 lucral bracts imbricate, unequal, scarious on the edges. Receptacle without 

 scales. Style-branches in the disk-florets trnncate. Achenes obovoid, rounded 

 at the top. Pappus 0. — Erect herbs, undershrubs, or shrubs. Leaves alter- 

 nate, usually divided, with narrow segments. Flower-heads usually small, 

 numerous, nodding. 



A large genus, widely spread over the temperate and cold regions of the northern hemi- 

 sphere, but scarcely penetrating into the tropics. 



Perennials. Involucres ovoid. Leaves few-lobed. 



Leaves glabrous, shortly lobed or toothed at the top. Female florets di- 

 lated at the base. Hermaphrodite florets sterile 1. A.japonica. 



Leaves white underneath, with long lobes. Female florets slender. Her- 

 maphrodite florets fertile 2. J. vxilgaris. 



Annual. luvolucres globular, very small. Leaves bipiunatifid . . . . Z. A. annua. 



1. A. japonica^ Thmb. ; DC. Prod. vi. 100. A glabrous erect peren- 

 nial, 1 to 2 ft. high. Leaves mostly cuneate, 1 to 1^ in. long, lobed or 

 toothed at the upper end, narrow and entire at the base; the upper ones 

 small, deeply 3-lobed or entii'e, and linear. Flower-heads ovoid, scarcely 

 more than 1 line long, in numerous short racemes forming a long dense 



