KUNGL. SV. VET. AKADEMIENS HANDLINQAE. BAND 55. N:0 5. 125 



rows of lacunae (see fig. 55 F, I) which in their outer appearance look like two 

 light nerves. 



Some other pusillus-ioTms are described especially by Dr. Fischer in his just 

 cited work, but partly they concern too insignificant alterations partly they are very 

 difficult to distinguish from each other, in consequence of which they cannot be of 

 any more common use or value. 



Distribution. Sweden: scattered or common through the whole country up to 

 Lapland: Karesuando, 1826, L^estadius (lib. Stockholm., Uppsal.). Var. (or f.) tenu- 

 issimus has the same distibution but is more rare. Var. Berchtoldi is observed 

 from the following stations in Sweden: Scania, Kjells Nobbeliif, 66, Coster (hb. 

 Uppsal., Lund.); Holland, Halmstad, 59, Blomberg (hb. Lund.); Gothland, Church 

 of Sanda, 53, Westoo (hb. Uppsal.) gathered together with P. mucronaius; Nericia 

 Viby, 47, Z. (hb. Upps.). — An ordinary P. pus. f. vulgaris Fr. from Bleking is 

 labelled: »Sotvattensform af P. gracilis Fr. enl. Prof. Fries tanke» and »in litt. » 

 (fresh-water form of P. gracilis Fr. ex Fries in litt.), Lyckeby a, 55, J. A. (hb. 

 Stockholm., Uppsal.), probably not sufficiently examined by Prof. Fries. — A bar- 

 ren form from Sudermannia, Safstaholra 89, 90, Person (hb. Uppsal. et Lund.) 

 might be the bastard panormitanus X pusillus. 



Norway northward to Nsesseby, 58, Sommerfelt, and Pasvig elv (river), 64, 

 Fries (hb. Uppsal.). The beautiful f. ligulifolius Fischer is collected in N. Mandals 

 amt, Ydre Fleckero, 61, by Wittrock (hb. Stockholm, et Uppsal.). — Iceland, 70, 

 Gronlund (hb. Uppsal.). — Denmark, in several places (hb. Stockholm., Uppsal. et 

 Lund.). — England Anglesea, 86 Griffith (hb. Stockholm.) labelled ssubsp. Stur- 

 rockii mihi. comm. Ar. Bennetts is nearly identical with v. polyphyllus MoR. ; 

 Westmorland, 74, Baily (hb. Stockholm.): f. ligulifolius Fischer, by Ar. Bennett in 

 the Journ. of Bot. 1881, p. 67, named »?;. panormitanus^. Ordinary form from other 

 stations (hb. Stockholm., Uppsal., Lund.). — Scotland, Stirling, 92, Kidston & Stir- 

 ling (lib. Stockholm.) is v. Berchtoldi (Fieb.). — France, several stations (lib. 

 Stockholm., Uppsal.). — Germany, several places, among others: Wolgast, 55 Mars- 

 son (hb. Stockholm.), v. Berchtoldi, and Hannover, Bassum, 82, Ebermaier (hb. 

 Lund.), the same var. — Austria, mostly v. Berchtoldi (hb. Stockholm., Uppsal., 

 Lund.). Part of it might be panormitaniLs x pusillus or mucronatus x piisilhis. — 

 Switzerland, Aargau, 34, Schmidt (hb. Stockholm.). — Spain, The Pyrenees, 56, 

 Zetterstbdt (hb. Stockholm., Uppsal.): var. Berchtoldi. — Finland, several stations 

 (hb. Stockholm., Lund.). — Russia, Osilia, 99, Skottsberg (hb. Stockholm.), f. ligu- 

 lifolius Fischer; Poland, 92, Woloczczak (hb. Stockholm.), var. Berchtoldi. — 



The Pusilli of East-Asia need a thorough revision. — Armenia, Caracoche, 

 BouRGEAU (hb. Lund.) is var. Berchtoldi. — N. America, Eastern Massachusetts, 

 MoRONG (hb. Stockholm., Uppsal), var. polyphyllus, in fact only an ordinary pusillus- 

 form of low growth; Nova Anglia, Robbins (hb. Uppsal.) and other stations of the 

 United States (hb. Stockholm, et Uppsal.). — I have seen no true pusillus-iorm.s 

 from Africa, Australia, and S. America. 



