158 Neue Litteratur. 



Systematik und Pflanzengeographie: 



Asclierson, P., Eine bemerkenswerte Spielart der Populus tremula. (Deutsche 



butanische Monatsschrift. Jahrg. XIV. 1896. p. 73 — 75.) 

 Baldacci, A., Rivista della collezione botanica fatta nel 1894 in Albania. 



(Bulletin de l'Herbier Boissier. Annee IV. 1896. p. 609-653.) 

 Beck, Günther, Ritter VOti Mannagetta, Viola Beckiana Fiala. Ein neues 



Veilchen aus Bosnien. (Wiener illustrirte Gartenzeitung. 1896. p. 197 — 198 » 



1 farbige Tafel) 

 Beiträge zur Flora des Regnitzgebietes. Zusammengestellt vom Bosnischen 



Verein in Nürnberg. VII. (Deutsche botanische Monatsschrift. Jahrg. XIV 



1896. p. 85 — 87.) 

 Mueller, Ferdinand, Baron von, A new Gnaphaloid plaut from West 



Australia. (Reprintcd from The Chenist and Druggist of Australia. 1896. 



1. October.) 



Tysonia. 



Headlets of flowers depressed-globnlar or almost hemispheiic-involucre 

 consisting of 3 — 6 leaf-like almost ovate bracts. Flowers numevous ; all 

 bisexual uniform, each supported by a large tender. transparent almost 

 ovate or elliptic bract. Corolla gradnally widened upwards, denticular- 

 tive-lobed. Anther cells protracted each at tbe base gradually into a 

 capillulary appendage. Stigmas truneate. Achenes blunt at the summit. 

 Pappus absent, or on the outer fruits forming a lobed shori membrane. 

 A small glabrons annual herb, vvith cordate-lanceolar leaves and solitary 

 ternisnal flower-headlets. 



Tbis new genus forms a link between Acomis and Cassiuia, receding 

 from the former in having the individual flowers provided with bracts, 

 and from the latter in the pappus being absent or rudimentary. If soine 

 few of the outer floral bracts can be regarded as involucral, then what 

 has been described bere as the involucre, must constitute floral leaves. 

 This question cannot be settled from the only specimen transmitted. 



Tysonia phyllostegia. 



Near the Upper Murchison-river ; Isaac Tyson, Esq. Whole plant, 

 so far as known, only some few incb.es high, thinly few-branched. Leaves 

 scattered, sessile or somewhat clasping, slightly undular at the margin, 

 dark-green on both sides. Headlets sbort-pedunculate or almost sessile, 

 hardly to beyoud 1 /s-inch broad ; involucral leaves scarcely sui passed 

 by the flowers, dark-green, sometirr.es narrowly pale at the mirgin. 

 Stamons partly exoertrd. Achenes slightly pubescent, when well developed 

 nearly ovate. 



The Promulgation of this singular plwnt in the present professional 

 periodical affords an apt opportunity for drawing the attention of the 

 inany pharmaceutical chemists, now settled in far interior regions of 

 Australia, to the fact that they have it in their power to add, in their 

 respective localities, much to our knowledge of the native Flora; and it 

 may bere, then, be specially pointed out, that among such tiny plants as 

 the Tysonia more uovelties will likely be yet found than among the 

 conspicuous plants. Minute • plantlets, including even vvee aquatics 

 moreover are so easily dried and transmitted, that they could be more 

 especially attended to during spring in their ephemeral existence. They 

 are numerous in all parts of Australia, more so than in any of the gieat 

 land-divisious of the globe. At the far inlaud places, phytologically as 

 yet so imperfectly explored, the gatherers of the plantlets will therefore 

 readily be rewarded by new discoveries, for which always public literary 

 credit will be given. 



Skeels, H. C, Orchids of Grand Rapids. (The Asa Gray Bulletin. IV. 1896. 



p. 58.) 

 Small, John K., New and notewerthy species of Saxifraga. (Bulletin of the 



Torrey Botanical Club. Vol. XXIII. 1896. p. 362-368.) 

 Straehler, Adolf, Eine neue schlesische Rose, Rosa gallica X rubiginosa f. 



umbellata. (Berichte der deutschen botanischen Gesellschaft. Bd. XIV. 1896. 



p. 224—225.) 



