19] 8-19.] BOTANICAL SOCIETY OF EDINBURGH 321 



genus of this Spirillus, and he has in his herbarium at 

 Kew " S. diversifolius, Gay. Int., July 1850." 



P. diversifolius, Ratin., var. sj)icatus, Engehnann in 

 Geyer's "Plants of Illinois and Mississippi," Am. Jour. 

 Science, 46 (1843). This answers the author's query as 

 to where described. 



P. pennsylvanieiis, C. et S., P. Nidtallii, C. et 8. (N. 

 America) teste Morong. — The name I suggested ex. 

 Rafinesque "P. epUiydruvi" must be dropped, as the 

 author points out, as the submerged leaves are certainly 

 not ■ subcordatus." 



P. alpinus, Balb. — I am much disappointed that Dr. 

 Hagstrom has not done for this what he has for iiitens 

 and decipiens. Not onh- has no one collated the various 

 varieties, etc., but Dr. Fischer has made it more difficult by 

 giving some of the older names a different value to what 

 the authors did. 



P. Tepperi, Ar. Benn. (Philippine Islands). — The Australian 

 is the true plant. I had mixed others with it, not Asiatic ! 



P. insulanus, Hagst. (W. Indies, Porto Rico). — I agree 

 in referring the Porto Rico specimens to a new species, and 

 they are certainly the same as Graebner names "P. NiUfallli, 

 var. portoricensis.'^ 



P. hindostaiiicus, Hagst. (India). — Schlagintweit's No. 

 4615 from the Western Himalayas, I thought might be 

 P. mcdaianiLs, Miq., but my specimen is a miserable scrap, 

 and the Bengal one not much better, so the author may 

 be right here. 



P. Jibrosus, Hagst. — I cannot think this species can be 

 upheld. To make a new species from one specimen, and 

 that without a collector's name or whence it came, with 

 only " 91 '' on the scrap of paper, is surely unsafe. Dr. 

 Hagstrom supposes it may originate from S. Africa. If 

 this were carried out in herbaria, ours would supply several, 

 but I never thought of suggesting them as new species. 



P. menihranaceus, Hagst. (Australia). — Simpl}^ a state 

 of my P. australiensis ; I am not surprised. I have the 

 same gathering as the author describes his plant from. 

 Some were P. Gheesmanii, Ar. Benn., others cmstraliensis. 

 It was years before I got together a series to show this, 

 and mainly by the aid of Mr. Maiden of Sydney. 



THANS. BOT. SOC. EDIN. VOL. XXVII. 23 



