346 DR. HOOKER ON THE DISTRIBUTION OF ARCTIC PLANTS. 



D. elata, Blytt, is the form j3. major of phragniitoides, according to Andersson, wliich 



approaches lanceolata. 

 Calamagrostis litorea, DC, is a synonym of laxa, Host., according to Grisebach. 

 According to Eries, it is an insufficiently defined species. Andersson observes its ex- 

 tremely close affinity with Epigejos. 

 C. Halleriana, Gaud. A distinct species, according to Grisebach, Eries, and Andersson, 

 who, however, says (under lanceolata, var, cinerascens), " CHalleriunce proxima," 

 and, again, " inter G. lanceolatam et ph^agmitoidem omnino media videtur." 

 C. phragmitoides, Hartm. Also kept up by Grisebach, Eries, and by Andersson, who 

 observes of one variety, " C. HalleriancB analoga;" of another, "ad C. lanceolatam 

 quodammodo vergens;" and of a third, "a C. lanceolata difficile dignoscitur." 

 HiEROCHLOE racemosa, Tr., is a synonym oi pi^f'UciJlora, according to Grisebach. 

 Deschampsia brevifoUa, Br. This, the Aira arctica, Tr., who elsewhere regards it as 

 a var. of ccespitosa, is kept up by Grisebach. Eries reduces it. Andersson remarks of 

 brevifolia, Hn., that it is very remarkable from resembling a hybrid between ccBspitosa 

 and flexuosa. 



Tbisetum agrostideum, Tr., is kept distinct from subspicatum by Andersson, Grisebach, 

 and Eries. Andersson remarks that it is so entirely intermediate hetween flavescens and 

 subspicatum, that it is extremely difficult to say to which it is best referred. 



T. Sibiricum, Pk^upr. {Aira MnprecMii, Griseb.), is distinguished by Grisebach by its 

 much larger scabrous-bearded florets. Andersson observes how very near it is to 

 agrostideum. 



Phippsia monandra, H. & A., is a synonym of algida, according to Grisebach. It is 

 al(/kla (3 of Kunth. It is kept distinct in ' Elor. Bor.-Am.' 



Catabrosa aquatica, Br. Durand gives this as a native of Greenland, lat. 65° N. 

 CoLPODiUM paucijlorum, Hook. Only one habitat is known for this ; it may be a 

 reduced or starved state of latifolitim ; but much better specimens are required to deter- 

 mine the point. 



C. arundhiace^im., Hook., is latifoUum (3, Trinius and Grisebach, and is reduced to a 

 synonym by Andersson. 



C. fulvum; Tr. Andersson doubts whether this and penduUnum are really distinct 

 species ; and judging from the fine specimen in Herb. Hook., I am disposed to think, with 

 reason. 



Foa dejiexa, Eupr., remotljlora, Rupr., and similis, Bupr., all of Samoyedland, are all 

 reduced by Grisebach to Colp). penduUnum — the last as a variety, the two first as 

 synonyms. 



P. scleroclada, Pi/upr., latijlora, Bupr., and poecilantlia, Bupr., all of Samoyedland, are 

 reduced by Grisebach to synonyms of Colp. fulvum. 



DUPONTIA Fisheri, Br., was named after Mr. Eisher, one of Parry's officers, and should 

 not be written Fischeri. 



D. pisilosantha, Tr., of which Foa pelUgera, Bupr., is a synonym, according to Grise- 

 bach, is kept by that author as a distinct species. 



