84 BENJAMIN CLARKE, F.L.S. 



Potamogeton lucens L. Hafnarfjorthr (Solander). Likely enough 

 confused with rufescens as often done now. — P. crispus L. Myvatn 

 (Glieman). Pond above the hot springs at Langarness (Lindsey). 



Dhjsmus compresstcs Panz., and B. ruj'us Link. Hop (Baring- 

 Gould ). 



Scirpns lacustris L. Reykjavik (Baring-Gould). Esia (Morck). 



Eriophorum latifolium Hoppe. Recorded by three authors. 



Carex pulicaris L., C.arenaria L., C.vulpina, L., C. muricatalt., 

 0. loliacea L., C. elongate L., C. pallescem L. These records are in 

 some cases pointed out as errors by Drejer in his Revisio Car. 

 boreal. — C.fuliginosa Sternb. Konig.— C. flnva L., and C. vesicaria 

 L. " In all the lists " (Babington, /. c). 



Milium effusion L. Near Kaldrananes (Mohr). 



Psamma armaria Beauv. Near Kinnaestadt (Thieneman and 

 Giinther). 



Calamagrostis Epigejos Roth. (Lindsey). — C. varia Vahl (Vahl). 



Aira atropurpurea Wahl. (Horneinann). — A. pracox L. Several 

 authors. 



Molinia carulea Mcench. Havn Ledelos (Mohr). Eydar on the 

 Lagarfljot. 



Poa flexunsa Wahl. (Vahl).— P. compressa L. Many of the lists. 



Dactylis glomerata L. In many lists. 



Festuca arundinacea Schr. In many lists. 



Triticum caninum L. In many lists. 



Equisetum sylvaticum L. Copse near Langarvatn (Baring- 

 Gould). 



Isoetes lacustris L. Thinvellir-vatn (Hooker). 



Lycopodium clavatum L., L. complanatum L. In some lists. 



Polypodium alpestre Hoppe. Stad under Snsefell. Steenstrup. 



Lastrea Thelypteris Presl. "In all the lists " (Babington, I. c). 



Asplenium fontanum Presl. Thing vellir (Baring- Gould). 



BENJAMIN CLARKE, F.L.S. 



Benjamin Clarke was born Sept. 5th, 1813, at Saffron Walden. 

 He was articled to Dr. Mayo, of Winchester, and regularly entered 

 the medical profession, but never practised except for a few 

 months on one or two occasions. In fact, even while a student in 

 hospital, he had become devoted to the study of Natural History, 

 especially of Botany ; and his researches formed the main occupa- 

 tion of his life. The Royal Society's Catalogue attributes to him 

 nineteen papers, of which three appeared in this Journal for 1865. 

 Two more recent contributions from his pen in this Journal for 

 1886 and 1887 will be found. These papers treat of very varied 

 subjects ; but a majority of them lead up to his principal separate 

 work, ' The Natural System of Botany.' In his early days he 

 attempted to fix the position of various orders and genera, of which 

 the-affinities were not settled, by ascertaining the position of the 

 carpels with reference to the axis and the position of the raphe 



