The Flora of Disko Island and Adjacent Coast of West Greenland. 99 



In the determination of my material I have employed the follow- 

 ing arrangement extracted from the monograph of Tn. Wolf, with 

 a few omissions and still i'ewer additions, the last in [ ]. 



1. Folia fere semper ternata, crenata vel serrata ad tertiam, 

 s a 1 1 e m non u 1 1 r a d i m i d i a m 1 a m i n a e p a r t e m i n c i s a , dentibus 

 latis, saepe remotis, plerumque obtusis; plantae super tomentum 

 plerumque parce pilosae, nunquam dense villosae. 



A. Foliola 1—2 (3) cm longa, late ovata vel subrhomboidea, basi 

 non vel breviter cuneata, circumserrata, fere aeque lata ae 

 longa vel parum longiora; caules tenues ereeti vel adscen- 

 dentes, 5 — 20, raro usque ad 35 cm alti. 



a. Foliola subtus tomentosa: Var. vulgaris (Ch. & Schl.) 



Lehm. rare in Greenland. 



b. Foliola laxe et tenuissime canescenti-tomentosa, subviridia. 



Var. pallidior Sw. (= siibviridis Lehm.) 

 A shade form of the preceding? 



B. Foliola 2—5 cm longa, irregulariter et grosse sinuato-crenata 

 dentibus magnis latis obtusis, quandoque margine subrevo- 

 lutis, nervis rubescentibus; caules sat crassi, compressi, 

 20 — 30 cm longi, prostrati, floribus apice glomerato-cy- 

 m o s i s. 



Var. prostrata (Rottb.) Lehm. 

 A form from shadowed and manured soil of the following? 

 11. Folia radicalia plerumque ternata intermixtis interdum 

 quinatis. Foliola 8 — 15 [35] cm longa, intermedio quandoque peti- 

 olulato, ultra dimidiam partem laminae aut fere ad nervum 

 medium usque pinnatifida, segmentis sublinearibus aut ob- 

 longis acutiuscuhs, plerumque approximatis; plantae quandoque 

 + dense sericeo-villosae. 



A. Folia longiuscule petiolata, foliola oblonga, dente supremo 

 pro mi nul o, utrinque segmentis 3 — 7 subp eet inatim dispo- 

 sitis; caules 20 — 30 cm longi, graciles, 2 — 5 flori, floribus 10 

 — 15 mm latis, plantae plerumque laxe pilis longis subvillosae. 



Var. pinnatifida Lehm. (= subquinata Lange. Rydb.) 



Very common in Greenland. 



B. Folia parva brevissima petiolata, foliola fere triangulari- 

 cuneata vel rhomboideo-obovata, dente supremo vix 

 prominente, segmentis angustis utrinque subflabellatim 

 dispositis; caules 3 — 5 cm longi, firmi, subscapiformes 1 — 2 

 flori, floribus 18 — 20 mm latis; plantae dense caespitosae vel 

 pulvinares, pilis longioribus + dense villosae. 



