832 PATAGONIAN EXPEDITIONS: BOTANY. 



flowers 2-3 ; hermaphrodites 68 ; all fertile. Achenes glabrous, long- 

 obovate, 4-costate. Pappus truncate, 4-toothed or 4-awned. 

 Fuegia, near Cape Horn. 



3. ABROTANELLA SUBMARGINATA A. Gray. 



Pulvinate-cespitose. Leaves many, linear, callous-margined, -spread- 

 ing, obtuse. Heads solitary, few-flowered. Involucral scales i -nerved. 

 Achenes obscurely 3~4-nerved. Pappus coroniform. 



Magellan ; Fuegia, by Orange Harbor. 



52. ARTEMISIA Linn. Wormwood. 



Odorous herbs or shrubs, often hoary, with alternate leaves, and small 

 discoid heads of greenish or yellowish flowers. Involucral scales few- 

 seriate, shorter outwards. Receptacle without chaff. Anthers basi-obtuse. 

 Style-branches truncate. Achenes oblong, 2-ribbed or striate, usually 

 with a superior disk. Pappus none. (Fig. in Eng. & Prantl, iv, 5, p. 281.) 



Species 200, chiefly of the Northern Hemisphere. 



A. MAGELLANICA Sch. Bip. 



Herbaceous, i -many-stemmed; stems leafy, spicate, racemose. Leaves 

 pinnatipartite, segments 2-3, or only i pair ; oblong-lanceolate, acute, 

 with resinous dots. Raceme perfoliate, simple or branching below. 

 Heads axillary upwards, subsessile, erect, many-flowered. Involucral 

 scales rounded, their margin pale-yellow, scarious. Achenes ovate, 

 cuneate, glabrous. Pappus none. 



(Chili ; Argentina) ; Patagon. ; Chubut ; Rio Sta. Cruz ; Magellan ; E. 

 Fuegia (Dusen, "a steppe-plant"). 



53. MELALEMA Hook. f. 



Low, cespitose herb, with alternate, spatulate, entire, crowded leaves, 

 tomentose underneath ; and solitary, sessile, discoid heads among the 

 upper leaves. Involucral scales many-seriate, silvery-tomentose, apically 

 sphacelate. Receptacle naked. Anthers basi-obtuse. Style-branches 

 linear, truncate. Marginal flowers female, tubular. Achenes oblong, 

 glabrous. Pappus setose. 



Species only i, viz: 



