A. arborea (Miclix.f.) Fern. 



Infrequent in southern and central New Hampsliire, north to Sandwich and 

 Lebanon; locally common in (ireat Bay area on shores; hybridizes with A. canadensis, 

 A. laci'is and A. Bartraiuiana. 



A. laevis Wieg. 



General and common throughout at low elevations ascending" occasionally to v3,000 

 feet : in swamps, clearings, along streams, and in forest openings : often tree-like : 

 hybridizes witli all other common species of Amdanchicr. 



A. Bartramiana (Tausch.) Roemer. Mountain-Juneberry. 



Common on slopes of White Mountains in coniferous forest, ascending to sub- 

 alpine areas of Presidential Range ; also common in cold bogs and thickets at low 

 elevations in northern and north central New Hampshire; outlying stations occur in 

 Washington in Sullivan County, on Mt. Monadnock in Cheshire County and near 

 Great Bav in Durham: Inbridizes with other species but usuallv flowers earlier: 

 Rhodora 26:178-179, 1924." 



The following treatment of Cratacfpis (Hawthorn) in New Hampshire is offered 

 with reservation. There is first of all considerable hybridization in the group which 

 makes identification often uncertain: apomixis and polyploidy are believed to be 

 common ; then many of the so-called "species" are highly localized being known only 

 from one or two stations. There is thus an excessive accumulation of taxons in the 

 .genus of quite different biological value, some reasonably stable with broad ranges 

 resembling "species" in the usual sense and many others of recent origin and perhaps 

 of only temporary status. The more wide ranging taxons have been subdivided bv 

 students whenever possible into a multiplicity of so-called "varieties" many of which 

 seem to be too inconstant and variable to be useful. Because of the many problems 

 in Crataegus which require profound study, the authors in most cases bave accepted 

 without critical examination the identifications of specimens in the herbaria, the 

 majority of which were made by students of Crataegus or by critical collectors. The 

 generic habitat preferences are thickets, river banks, fence-rows, pastures and dry 

 hillsides, alwavs at low el^^vations. Individual specific habitats are, in the present 

 state of our knowledge, difficult to determine. 



Crataegus monogyna Jac(|. 



Escaped in Durham, probably not naturalizing : introduced from Eurasia. 



C. punctata Jacq. 



Confined to lower Connecticut Valley from Hanover to Walpole. 



C chrysocarpa Ashe var. chrysocarpa. 



Apparently generally common throughout state, at low elevations. 



\'ar. phoenicea Palmer. 



Less common but scattered throughout range. 



C. Faxoni Sarg. 



Franconia (Ham Branch Bridge) is tvpe locality, also in Walpole and Durham: 

 Rhodora 5:161-162, 1903. 



C. Brunetiana Sarg. 

 Durham, only collection. 



C. Brainerdi Sarg. var. Brainerdi. 



Common and probably generally distributed. 



\ ar. asperifolia (Sarg.) Egglcston. 

 Collected in Holderness and Walpole. 



'^'ar. scabrida (Sar.g.) Eggleston. - 



Troy, only collection. 



jO ';:: 



