Howe : Notes on American Hepaticae 289 



described above as existing between Jwigerntannia nematodes 

 Gottsche and Lepidozia chaetopJiylla Spruce. The Cuban plant is 

 autoicous and in structural characters is essentially identical with 

 the typical A, coactilis. Vestiges of underleaves are occasionally 

 met with in both and in both the leaf is sometimes reduced to a 

 single prong. 



The specific separation of Aracliniopsis confervifolia from A. 

 ■diacantha is possibly open to question, yet in the light of available 

 specimens the two appear distinct. Aracliniopsis coactilis filifolia 

 Spruce, judging from specimens distributed as Aracliniopsis filifolia 

 in Hepaticae Spruceanae, seems to us less entitled to specific rank. 



Aracliniopsis confcruifolia resembles Telaranea nematodes in 



outward appearance, but is easily distinguished by the characters 



alluded to above under Telaranea. It is to be expected that 



Aracliniopsis will be found to occur within the limits of the United 



States. 



IV. RicciA Campbelliana 



Herr M. Heeg, of Vienna, has kindly called our attention 

 {in Hit) to the close resemblance between the Californian Riccia 

 -Campbelliana M. A. Howe (Mem. Torrey Club, 7 : 26. pi. gi. 

 f. i-ij. 1899) and the Mediterranean Riccia macrocarpa Levier 

 (Bull. Soc. Bot. Ital. 1894: 114. 1894). The similarity is indeed 

 very striking as is evident from specimens of R. macrocarpa which 

 we owe to Dr. Levier, but R. macrocarpa appears to be uniformly 

 dioicous as originally described by Levier and as described again 

 by Stephani (Bull. Herb. Boi'ss. 6: 343. 1898), while R. Camp- 

 belliana is uniformly monoicous ; and the areolae of the outer 

 face of the spores of Riccia macrocarpa are more perfect than in 

 R. Campbelliana. In view of these differences the claim of Riccia 

 Campbelliana to specific rank seems defensible for the present at 

 least. The species has recently been collected by Dr. Walter R. 

 Shaw at Claremont, Los Angeles County, Cal., thus extending its 

 known range about two hundred and fifty miles southward. 



BOTANICAL 



