S. interior Rovvlce. Sandbar-Willow. 



River-gravels and sands near high-water mark; of limited distribution in New 

 Hampshire mostly confined to islands in the lower Connecticut River ; known stations 

 tor the typical glabrous extreme occur north to Plaintield : forma IVhcclcri (Rowlee) 

 Rouleau with leaves more or less permanently silvery-silky, is found on the shores 

 at Walpole and Plainiield ; hybrids with 6'. n'ujra and probably with .S . rigida were 

 noted on islands in Plainfield. 



S. herbacea L. 



Infrequent ; confined to the heads of ravines and wetter alpine areas on the Presi- 

 dential Range and of limited occurrence in the Franconia Range (Mt. Lincoln). 



X. S. Peasei Fern. 



A hybrid of ^". hcrhacca and -V. I'va-ursi, confined to upper parts of King's Ravine 

 on Mt. Adams; limited colony stdl surviving since discovery in 1909; Rhodora 19:221- 

 223, 1917. 



S. Uva-ursi Pursh. 



Abundant in moist as well as drier alpine areas and open ravines of Presidential 

 and Franconia ranges ; local on exposed slope on southern part of Twin Range : 

 forma lasiuf^hvlla Fern, with leaves pilose above has been collected on Mt. Lincoln: 

 Rhodora 18:52, 1916. 



S. argyrocarpa Anderss. 



Frequent in springy places and along brooks in alpine areas and ravines of 

 Presidential Range. 



X. S. Grayi Schn. 



A hybrid of i\ argyrucarpa and .S'. plaiiijulia occurs in Tuckorman and Ammo- 

 noosuc Ravines. 



S. pyrifolia Anderss. Balsam-Willow. 



Frequent in moist places; in northern New Hampshire mostly at low and medium 

 altitudes but sometimes in subalpine areas south to Benton and Hart's Location : 

 may hybridize with .b'. discolor: Rhodora 14:09-70, 1912. 



S. cordata Michx. var. abrasa Fern. 



Collections fitting this taxon have been made in 1955 and 1956 from a single 

 spreading clump 2-3 feet tall at Sumner's Falls in Plainfield. 



S. rigida Muhl. var. rigida. 



Common in river-gravels and other moist habitats at low elevations ; of general 

 distribution in our area, less common in open areas at medium elevations up to 

 4,0(JU feet: forma iiwllis (Palmer and Steyerm.) Fern, with petioles and branchlets 

 pubescent is less common but of rather general distribution: 6'. rigida may hybridize 

 in our area with 6'. Bcbhiana, S. discolor, S. gracilis, S. scricca, and 6^. pediccllaris. 



Var. angustata (Pursh.) Fern. 



Is generally more northern than the typical and much less common. 



X. S. myricoides (Muhl.) Carey. 



This hybrid of 5". rigida and 5. scricca is the most commonly encountered of the 

 many hybrids of 6". rigida with other species ; to be expected wherever the two 

 species grow in close proximity. 



S. Bebbiana Sarg. Long-beaked Willow. 



An abundant willow of general distribution, at lower elevations, in both moist and 

 dry situations ; ascending the mountains to 4,000 feet : hybridizing with 6\ rigida, S. 

 discolor, S. humilis, and 5". gracilis, producing a confusion of progeny very few of 

 which have been collected in New Hampshire and named as to parentage. 



S. pediccllaris I'ursh. var. hypoglauca h^ern. 



The typical variety with leaves green beneath is not reported from New Hamp- 

 shire; var. hypoglauca is scattered in northern and east central New Hampshire with 

 outlying station in Hollis ; may be expected throughout; open swamps at low eleva- 

 tions : may hybridize with 6". rigida. 



17 



