C. alternifolia L. f. Pagoda- or Altcriiate-leavcd Dogwood. 



General and common in well-drained woodlands throughout; at low elevations 

 ascending to 2000 feet. 



Clethra alnifolia L. Sweet Pepperbush. 



Reaches northwest limits in southern Maine; in New Hampshire locally common; 

 a^ low elevations, mostly confined to southeastern New Hampshire, north to Somers- 

 worth and Hooksett, west to Rindge in Cheshire County ; swampy and sandy woods 

 and along the shores of ponds and streams. 



Ledum groenlandicum Ocd. Labrador-tea. 



I'.ogs and peats in alpine areas and cold bogs at medium and low elevations ; com- 

 mon in northern and north central New Hampshire becoming infrequent soutliward : 

 forma dciiiidafiiiii Vict. & Rousseau, has not been collected in New Hampshire. 



Rhododendron maximum L. Great Laurel, Rosebay. 



In wet woods, swamps and borders of swanns ; of markedly disjunct distribution 

 ill New Hampshire; now known as native from the following list of townships though 

 reliably reported from several others in the past: Grantham. Albany (the nortliern- 

 most station), Pittsfield, Barnstead, Wilton, Mason, Manchester, Fitzwilliam, anrl 

 Richmond ; tends to persist and spread following planting ; such plants should not 

 be c(jnstrued as native; forma album (Pursh) Fern., is occasional with the typical; 

 none of the other named forms have been found in New Hampshire: Rhoflora 18:25- 

 26. 1916, 18:73-74, 1916, 40:461-462, 1938 and 32:215-218, 1950. 



R. lapponicum fL.) Wahlenb. Lapland Rosebay. 



Confined to alpine areas of Presidential Range, where commnn in dry soils. 



R. canadense (L.) Torr. Rhodora. 



Generally distributed and common although infrequent in lower Connecticut Valley; 

 bogs, wet pastures, and occasionally on rocky slopes of mountains, ascending to 

 alpine area of Mt. Washington. 



R. roseum (Loisel.) Rehd. Early Azalea. Election-pink. 



Reaches northeastern limit in southwest Maine, frequent in southwestern New 

 Hampshire, becoming occasional in central New Hampshire east to Sandown an 1 

 Nottingham and north to Madison and Bath; at low elevations, ascending to 170(1 

 feet in Washington, Sullivan County ; dry woods and rocky slopes. 



R. viscosum (L. ) Torr. Swamp-Honeysuckle, Clammy Azalea. 



Reaches northeastern limits in southwestern Maine, known in New Hampshire 

 only from Pelham and \^'indham ; swamps and moist thickets : forma glaucum 

 (Lam.) Voss. occurs with the typical. 



Loiseleuria procumbens (L.) Desv. Alpine Azalea. 



Common in alpine areas of Presidential Range, mostly in dry. peaty or rocky 

 areas; collected at 4,000 feet elevation on Nelson Crag on Mt. Washington. 



Kalmia latifolia L. Mountain-Laurel. 



Frequent to common in soutliern Hillsboro and Cheshire Counties, mostly lacking 

 in Connecticut Valley ; of scattered occurrence in eastern and central New Hamp- 

 shire, but extending north to Conway, Albany, and Thornton; extensive along south- 

 ern shore of Squam Lake; rocky, mostly deciduous acid woods often in dry areas, 

 but most luxuriant in moist woods or swamps : considerable variation in flower- 

 color noted, but no extremes have been collected in New Hampshire : Rhodora 57 : 

 34-36, 1955. 



K. angustifolia L. Lambkill, Sheep-Laurel. 



Common and widely distributed throughout New Haimpshire at low and medium 

 elevations, mostly in open situations ; swamps, bogs, pastures and rocky slopes of 

 lower mountains. 



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