234 



Annals of Horticulture. 



Dalibarda. One or two species; 

 1 in America. 

 D. repens, Linn. Gill. 1881. 

 (Eng. 1766.) 

 Dryas. Species 2; 1 in our region. 



D. octopetala,Linn., var. Drum- 

 mondii. Watson. (Eng. 1800.) 



Eriogynia. Four species in our 

 region. 



E. (Spiraea) pectinata, Hook. 

 (Eng.) 



Fallugia. Species 1. 



P. paradoxa, Endl. (Eng.) 

 Fragaria. A half dozen species; 

 4 in our region. 



P. Chilensis, Duchesne. * Occa- 

 sionally grown for many years. 



P. vesca, Linn. * Various gar- 

 den varieties, little known in 

 this country, belong to this 

 species ; but they are of Euro- 

 pean origin, where the plant 

 is also native. 



P. Virginiana, Mill. * (Eng. 

 1629.) The supposed parent 

 of the garden strawberries. 

 Geum. About 30 species; 14 na- 

 tive to U. S. 



G. radiatum, Michx. Kelsey, 

 '91-'92. 



G. rivale, Linn. * A variety al- 

 bum is offered. 

 G. triflorum, Pursh. * (Eng.) 

 Gillenia. Species 2, North Amer- 

 ican. 



G. stipulacea, Nutt. Kelsey, '91- 

 92. 



G. trifoliata, Moench. * 

 Heteromeles. One species in 



our region. 



H. arbutifolia, Roemer. Orcutt. 

 1891. 



Horkelia. There are 14 species in 

 our region. 



H. (Potentilla) congesta, Dougl. 

 (Eng. 1826.) 



Ivesia. There are 15 species with- 

 in our limits. 



I. Gordoni, T. & G. Gill. 1881. 

 I. unguiculata, Gray. (Eng.) 



Neviusia. A single species, in Ala- 

 bama. 



N. Alabamensis, Gray. * (Eng. 

 .1882.) This is of recent intro- 

 duction. 



Nuttallia. A single species, west- 

 ern American. 



N. cerasiformis, T. & G. Gill. 



1881. (Eng. 1848.) 

 Physocarpus. Species 4 or 5; 2 in 



our region. 

 P. opulifolius, Maxim. (Neillia 



opulifolia.) * (Eng. 1690.) 



There is a variety aurea. 

 Potentilla. About 120 species ; in 



this country, 40. 

 P. arguta, Pursh. (Eng. 1826.) 

 P. fruticosa, Linn. * 

 P. glandulosa, Lindl. Gill. 1881. 

 P. gracillis, Dougl. Gill. 1881. 



(Eng. 1826.) 

 P. Pennsylvania, Linn. (Eng. 



1827.) 



P. tridentata, Aiton. * 

 Prunus. About 100 species; 25 in 

 our limits. 



P. Americana, Marsh. * (Eng.) 

 Many varieties are cultivated 

 for fruit. 



P. angustifolia, Marsh. (P. 

 Chicasa.) * Cultivated in vari- 

 ous varieties for its fruit. 



P. Caroliniana, Aiton. * 



P. demissa, Walt. Gill. 1881. 



P. hortulana, Bailey. * Numer- 

 ous varieties are in cultivation 

 for fruit. 



P. ilicifolia, Walp. Orcutt, 1891. 

 (Eng.) 



P. incana, Schw. Introduced 

 sparingly during the last three 

 or four years, for its possible 

 value as a fruit plant, under 

 the name of P. pumila. Grown 

 als o for orn ament. This is the 

 western representative of P. 

 pumila, and its oldest name is 

 not yet determined. P. incana 

 of Schweinitz is used until an 

 older one, if such exist, is 

 found. 



P. maritima, Wangh. * (Eng. 

 18 0.) Bassett's American 

 plum, grown for its fruit, be- 

 longs to this species. 



P. Pennsylvanica, Linn, f . * 

 (Eng. 1773.) 



P. pumila, Linn. * (Eng. 1805.) 

 Grown for ornament. A plant 

 known in gardens as Cerasus 

 pumila is not this species. 



P. serotina, Ehrh. * (Eng.) 

 There are three or four named 

 garden varieties. 



