Gelehrte Gesellschaften. 285 



Meeresstrande in der Weise aufgelöst werden, dass die Gefässbündel 

 von einander getrennt und in kugelige oder ellipsoidische Ballen 

 wieder verwickelt werden, welche die grösste Aebnlichkeit mit den 

 aegagropilen Algenformen darbieten. 



(Originaibericht.) Eriksson (Stockholm). 



Royal Society of South Anstralia. 



Sitzung vom 7. August 1883. 



Baron Ferdinand von Müller, Diagnose« of .some new plants 

 from South Australia. 



Dimorphocoma. 



Flower-head nearly bell-shaped. Bract;^ forming the involucre nine or 

 ten, herbaceous, in two rows, narrow-lanceolate. Receptacle without special 

 bracts. Flowers few. CoroUa of the outer flowers radiating with short and 

 narrow ligules ; stamens none ; style enclosed ; stigmas exceedingly thin, rather 

 acute. Innermost flowers bisexual, very few in number ; coroUa tubulär, with 

 five short tooth-like lobes ; anthers very short, rounded at the base ; stigmas 

 very thin, papillular. Achenes of the anantherous flowers fertile, obconic- 

 oblong, densely silky ; their pappus consisting of numerous capillary bristles 

 in several rows unequal in length, and of five or six linear-lanceolate inner 

 scales. Achenes of the bisexual flowers exceedingly slender, glabrous ; their 

 pappus formed by a few very short bristles. 



A minute annual of Central Australia, having much the aspect of Vitta- 

 dinia australis, with short hairs, with oblong- or nai-row-lanceolar leaves at 

 the base and along the stem, with terminal solitary small flower-heads almost 

 sessile or on short peduncles, and with whitish rays of the outer flowers. 



The genus, thus defined, differs chiefly from Elachanthus and Isoetopsis 

 in its anantherous flowers being ligulate , and in having the pappus of the 

 fertile fruits provided not only with scales , but also with bristles ; from 

 Isoetopsis it is fui-thermore distinct in habit; from Minuria it is separated 

 by its fewer and broader involucral bracts, and by its anantherous flowers 

 producing a scaly as well as bristly pappus. 



Dimorphocoma minutula. 



On harren stony ground , forming the western slope of Mount Parry, in 

 the Aroona-Range, towards Lake Torrens. R. Tat e. 



The specimens vary from one and a-half inch to four inches high, beset 

 with septate hairs. Sterns one or two or few, erect or ascending. Root very 

 thin , attaining a length of three and a half inches , producing scattered 

 capillary fibres. Leaves flat, a half to one inch long; the radical 

 leaves somewhat shorter and broader than the others, the uppermost narrower 

 than the rast. Flower-heads about one-fourth of an inch long. Involucral 

 bracts nine or ten, the inner not much longer than the outer. Anandrous 

 flowers eight or nine ; their ligular portion white, hardly exceeding one line 

 in length, undivided and acute. Bisexual flowers three or four; their corolla 

 yellow, only about one-eighth of an inch long, gradually widening upwards. 

 Fertile achenes nearly one and a half line long , truncated at the summit ; 

 their scales whitish and equal in length to the longer bristles, which measure 

 about one and a half line. Sterile achenes with bristles of hardly one-fourth 

 of their length. 



In flower during the early part of June, but continuing to September. 



Sitzung vom 2. October 1883. 



Babhagia pentaptera. 

 A small undershrub , with diffuse procumbent branches and numerous 

 ascending branchlets ; leaves short , club - shaped or linear semi - cylindrical, 

 glabrous and succulent ; flowering calyces somewhat downy ; style very short 



