Var. tenuescens Fern. 



Has been reported only from Randolph and Tamvvorth in New Hampshire ; it 

 iutergrades with var. hypnglaitca : both are found with other willows in wet meadows 

 and swamps. 



S. discolor Muhl. Large Pussy-Willow. 



Abundant and generally distributed species of moist thickets and along roadsides 

 at low elevations, occasionally ascending to 4,000 feet : this and the next are the earli- 

 est willows to flower ; frequently hybridizing with the following common species, .S". 

 ngida, S. hiiinilis, S. Bcbhiaiia, and .V. t/racilis: hybrids of .S". discfllor and .S'. Iiuniilis 

 may be related to or confused with the next. 



Var. latifolia Anderss. 



A somewhat variable taxon, occurring occasionally with the species in similar 

 h.abitats. 



S. humilis Marsh, var. humilis Small Pussy-Willow. 



Frequent and of general distribution at lower elevations, ascending to 2,{}00 feet, 

 often in dry situations ; liybridizes with S. Bchbiana, S. discolor, S. gracilis, and S. 

 scricca. 



\'ar. keweenawensis Farw. 



Several stations in Coos and Grafton counties. 



\^ar. microphylla (Anderss.) Fern. 



Usually quite distinct from var. humilis: barely gets into New Hampshire from 

 the south ; there are collections of it from Nashua, Merrimack, and Pelham, in sandy 

 areas. 



S. gracilis .Anderss. var. gracilis. 



At low altitudes ; lias been collected chiefly from north of the Presidential Range 

 in New Hampsliire with outlying station in Lee; to be expected throughout. 



\ ar. textoris Fern. 



Quite distinct from typical S. gracilis: generally distributed and frequent at low 

 elevations, in swamps and along water-courses: hybridizes with .S'. ngida. S. Bchhiana, 

 S. discolor, S. hiiinilis, S. scricca, and S. alba. 



S. sericea Marsh. Silky Willow. 



A common and generally distributed willow at low altitudes, in swamps, along 

 streams and in river-grave'ls in wet situations; occasionally ascends to 4,000 feet; 

 crosses freely with .9. rigida, S. Iniiiiilis. and 5". gracilis. 



S. planifolia Pursh. 



Conhned to the Presidential Range ; along brooks and in wet meadows in the alpine- 

 area and in moist heads of ravines. 



S. pellita Anderss. 



Stream-banks and wet thickets in Androscoggin and Connecticut river valleys; 

 confined to Coos County except for single station far to southwest in Marlow : forma 

 f^sila Schneid., with leaves glabrescent beneath has been collected in Wentworth 

 Location. 



S. purpurea L. Purple Osier, Basket-Willow. 



Occasional escape throughout, well estaiblished in Dover : introduced from Furope. 



Populus tremuloides Miclix, var. tremulcides Quaking or Trembling Aspen. 



Conimon and wide ranging tree at low elevations ascending to 3,200 feet; in dry 

 woods, disturbed forest, and old fields : forma roiiforiiiis Tidestr., with kidney-shaped 

 leaves has been collected in Tamworth and is probably occasional throughout; a 

 rare form, with narrower heart-shaped leaves, has been collected in Lee. 



Var. magnifica Vict. 



Perhaps of patliological origin, is occasional in New Hampsliire. 



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